Mossberg 640K Chuckster .22 Magnum - The Firearms Forum

gmirsky · 12-24-2006, 07:40 PM

I just inherited a .22 Magnum Mossberg 640K Chuckster (Pre-1968 GCA -- No Serial Number). I managed to locate some Savage magazines that with a little modification I got fit and function.

Does anyone on this forum have any experience with this rifle?

I just need to do a final breakdown and cleaning before I head out to the range. The original scope was "Kaput" so I am looking for some good recommendations for a scope and Weaver style rings for my "Chuckster".

Is there anything that I should be wary of with this rifle? It looks solid and well balanced. I never shot a .22 magnum before. My only experience is with .22 LR and .30 caliber center fire. Is the kick much more than a .22 LR as I have been told it is or was I sold a bill of goods?

ken w. · 12-24-2006, 07:51 PM

This is one of the most accurate .22 MAG rifles made.The triggers are kinda crappy tho.You have to be real careful what solvent you use on this gun.Some will melt the triggerguard and the reciever cap.Brake parts cleaner is one you want to stay away from.I had to learn the hard way.The kick is no more than a .22 LR. It's a tad louder tho.I have found that scopes are a bit of a hassle as far as fiting on the scope grooves.I wear glasses and had to get an off set ring set to get the scope back far enough to get the correct eye releaf.You have a fine rifle that will shoot well.

gmirsky · 12-24-2006, 08:01 PM

For anyone interested the magazines that fit the Savage models 4M, 34M, 65M, 93, 93R17, Striker and 982MDL will fit the Mossberg 640K but be prepared to open up the guide lips of the magazine channel a bit. I used a flat head screw driver to do the job. Also be prepared to grind down the magazine guide bar with a dremel tool. It took me all of 15 minutes to make 3 different magazines from different lots of Savage magazines fit my rifle. So it is not that hard to do.

rangerruck · 12-24-2006, 08:21 PM

tho' I have not had the pleasure of having one, the mossy allways seems to get rave reviews, especially in the accuracy dept. most folks seem to want to hang on to them, and you don't see them come up much for sale.

RimfireRat · 12-24-2006, 10:55 PM

Most info you might need you can find at Damguys site. http://home.epix.net/~damguy/index.html he covers most questions on Mossbergs. The one problem you will encounter is the location of the scope rings. you will notice the rear ring has very little area to mt behind the port.You will not be able to get your scope rearward enough to be comfortable shooting. THE ONLY fix is the BKL offset rings. (I used the #274) these will allow the mounting of most scopes to a usable position. This is a curse of the latter mossberg 300/600 series design. Along with the crappy trigger. the trigger can be worked. Although I have a 640 that will shoot 3/8" at a100yds if i do my part with the original trigger,About 6#s at least.I got my 340 below 3# so Guess I'm gonna work on the 640 this winter. You inherited what will become one of your favorite rifles, enjoy.--JMJ--AKA--

Jim the Mossberg Junkie

gmirsky · 12-25-2006, 08:41 AM

Quote:

Originally Posted by RimfireRat

Along with the crappy trigger. the trigger can be worked.

Thanks for the scope mount hints!

Any place on the net that has information on how to work on the trigger? It seems that this would be one of the bigger bangs for my time, energy and money on this project.

Greg

j_m_ru · 01-20-2008, 06:35 PM

I just bought Mossberg 640K in 22MAG. Nice gun, but it misses rear site. It has see through rings with scope, but I would like to have rear site anyway. Any idea where I can get rear site?
Thanks.

whip · 01-20-2008, 08:48 PM

I had a 640K Chuckster and it was a tack driver. My one warning would be to not work the bolt really hard on the cocking stroke. I broke the plastic block at the rear of the rifle and the little metal piece that covers the back of the bolt fell down and the next round I bent the metal piece off. Gun still shoots well just doesn't look the greatest.

Mdel19man · 06-14-2008, 11:52 PM

There is one thing to be wary about with this rifle. When you disassemble it, there is a small washer at the base of the guide for the magazine. Be extremely careful not to lose it as I did. The washer will affect the feeding of the magazine. I ended up have to fabricate my own. Other than that it is one of the most accurate guns I own. The kick is nothing to be concerned about.

the3pete · 06-15-2008, 05:50 PM

Quote:

Originally Posted by j_m_ru

I just bought Mossberg 640K in 22MAG. Nice gun, but it misses rear site. It has see through rings with scope, but I would like to have rear site anyway. Any idea where I can get rear site?
Thanks.

www.havlinsales.com

whip · 06-24-2008, 10:32 PM

I will second working the bolt easy. I also chipped the plastic block at the rear of the action and also broke off the metal clip that covers the hole. Mine was a tack driver and I used a weaver style .22 mount on the rails. I have regretted selling it but at the time I needed the money. Have fun with it.

DaveLikesTrucks · 08-09-2008, 02:18 AM

I acquired a Mossberg 640K that is not working properly. Previous owner gave me the small washer he found at the time it stopped working. Clearly the one indicated above.

Without taking things apart, I can't see where it fits. Could someone help me out with a description or picture of how it is supposed to fit?

I'm guessing I need to remove the stock and then I'll be able to access the location of the washer. Please help.

Also, will the metal trigger guard from older models fit on this model?

Thanks.

Waldo Pepper · 09-28-2008, 08:10 PM

Man oh man where do all you people find these nice old Mossy's?

Only ones I have seen are crap that have been badly cared for or chopped up.

Some of the old Mossbergs can out shoot very expensive modern target guns with ease. My 142A even came with an adjustable trigger and will do a single hole at 25 yards with good ammo.

millman · 11-22-2008, 08:45 PM

I have a 640 KD Chuckster. I love it. I went ahead and D&T'd it, so no more scope mounting problems.

Millman

Iceburgh · 01-09-2009, 09:26 PM

My wife just got me a 640K for my birthday. Other than a scratch on the stock, it looks like new. I can't wait to go out tomorrow and try it out. It is supposed to be about 20 degrees, but I'm not waiting for spring.

CampingJosh · 01-09-2009, 09:30 PM

Quote:

Originally Posted by Iceburgh

My wife just got me a 640K for my birthday. Other than a scratch on the stock, it looks like new. I can't wait to go out tomorrow and try it out. It is supposed to be about 20 degrees, but I'm not waiting for spring.

Good deal, Iceburgh! Welcome to The Firearms Forum. We all hope you stick around for a while.

RimfireRat · 01-17-2009, 08:23 PM

They also made a 640M . "mannlicher stocked version." very hard to find and $500 + bucks when ya do find one. I made my own.

this has the sweetest balance and shoots great.

--JMJ-- ** there's one on ********* now for sale

rxrivera · 02-28-2009, 04:45 PM

I've got a couple of 640's that need new stocks. Does anyone know where I might find a stock for a Mossberg 640K?

Waldo Pepper · 02-28-2009, 05:32 PM

Quote:

Originally Posted by rxrivera

I've got a couple of 640's that need new stocks. Does anyone know where I might find a stock for a Mossberg 640K?

Unfortunately nothing available but to find used original, or custom stock that could really set you back. However if you keep and eye on the auctions you might find a nice used or refurnish-able used stock. Good luck.

AWolf · 05-29-2009, 09:38 PM

My Dad has a very nice Chuckster (what a cool name by the way!) that thing is a scary tack driver .....even if you shoot cross eyed!!

i wonder if you give the specs to someone like STOCKYS out of of MICHELE SD if they can make one of those nice lamanated stocks for one .....i have one for my SAVAGE .17 it really dressed it up and helped the balance with that hevy bull barel it has

Dick Bertram · 06-09-2009, 03:51 PM

Quote:

Originally Posted by gmirsky

I just inherited a .22 Magnum Mossberg 640K Chuckster (Pre-1968 GCA -- No Serial Number). I managed to locate some Savage magazines that with a little modification I got fit and function.

Does anyone on this forum have any experience with this rifle?

I just need to do a final breakdown and cleaning before I head out to the range. The original scope was "Kaput" so I am looking for some good recommendations for a scope and Weaver style rings for my "Chuckster".

Is there anything that I should be wary of with this rifle? It looks solid and well balanced. I never shot a .22 magnum before. My only experience is with .22 LR and .30 caliber center fire. Is the kick much more than a .22 LR as I have been told it is or was I sold a bill of goods?

Dick Bertram · 06-09-2009, 04:02 PM

You indicated that you inherited a Mossberg 640K and asked if there is anything about the rifle you should be wary about. I am the original owner of a Mossberg 640K chambered for .22 Mag; the rifle was purchased somewhere around 1960(give or take a couple of years). I was in the process of preparing the rifle to be given to one of my grandsons and during the sighting in process noticed that this particular rifle can be fired when the bolt is not locked down. The bolt had been inadvertantly bumped which caused the bolt to move upward as if the shell was going to be ejected. The rifle will still fire when the bolt is up in an unlocked and unsafe position. In fact I can actually begin to move the bolt slightly to the rear and the rifle will still dry fire.
I know this can happen with a live round because I accidentally fired the rifle when the bolt was in an unlocked and unsafe mode which resulted in a discharge of hot gas from around the bolt and down through the magazine port resulting in a minor powder burn.
I have sent the rifle in for evaluation but would urge caution if you own one of the early model 640K's.

jallen · 09-12-2009, 01:37 PM

I am now 61 years old and have been the proud owner of the 640K Chuckster since I was a young boy. I purchased it in the first year of manufacture and it has been lovingly cared for since that time. The monte carlo stock is very nice and it is indeed a nail driver. After returning from the Marines in 1973, I took my young wife to a 125 yard range and we sgot at a large, standard bulls eye target. I was putting each shot in the bullseye and when I handed it to her for her first shooting experience, she was missing the bullseye everytime. I was using a spotting scope and the rifle was fitted with a Weaver scope. Well, when they called a cease fire, I walked with her to check out the target and see where she was hitting. She insisted she hit every shot. To make a long story short, she was shooting at the numbers in the rings outside of the bullseye and HITTING EVERYONE at 125 yards.

It is a fine rifle that my kids and grandkids still love to shoot in NY State. The scope does not mount rearward enough, as mentioned, and this makes shooting a little uncomfortable.

So, believe me, it is a tack driver to be sure and I was a highly trained Marine Expert rifleman embarrased by a young girl, first time shooter.

GunHugger · 09-12-2009, 07:38 PM

Since this is a 640 thread I figured I would post some info for everyone.

Kentucky_Rifleman · 01-18-2010, 09:25 PM

I inherited my Dad's 640 29 years ago, when we started groundhog hunting together. It was and is a tack-driving beast. His model had the flip-down plastic fore-end that makes a forward "pistol grip." It's genius! It makes shooting from a standing position rock-steady.

I bought another 640 some years back, because I wanted to keep dad's intact, but I wanted one to customize. I adapted a stock from another old Mossy .22 LR I picked up cheap at a gun show. It took some cutting, but I got the 640 into its new home. Like a few others here, I had receiver-plug difficulties (the plastic plug was broken on the one I bought. It took me a little doing, but I hand-machined a new plug out of solid aluminum stock, matching it to the good one in Dad's rifle. I used woodshop and common hand tools and patience, but I got it done in under 4 hours. I finished the new plug with Brownell's Alumi-black. It came out really nice. I've tweaked the triggers on both. The nature of the trigger keeps me from getting the pull under 2.5 pounds while keeping the gun safe.

12-24-2006, 07:40 PM	#1
gmirsky Member Join Date: Dec 2006 Posts: 9	Mossberg 640K Chuckster .22 Magnum I just inherited a .22 Magnum Mossberg 640K Chuckster (Pre-1968 GCA -- No Serial Number). I managed to locate some Savage magazines that with a little modification I got fit and function. Does anyone on this forum have any experience with this rifle? I just need to do a final breakdown and cleaning before I head out to the range. The original scope was "Kaput" so I am looking for some good recommendations for a scope and Weaver style rings for my "Chuckster". Is there anything that I should be wary of with this rifle? It looks solid and well balanced. I never shot a .22 magnum before. My only experience is with .22 LR and .30 caliber center fire. Is the kick much more than a .22 LR as I have been told it is or was I sold a bill of goods? __________________ "It is difficult to make our material condition better by the best law, but it is easy enough to ruin it by bad laws." -- Theodore Roosevelt (1858-1919) - 23 Aug. 1902, Providence, R.I. -->

12-24-2006, 08:01 PM	#3
gmirsky Member Join Date: Dec 2006 Posts: 9	Re: Mossberg 640K Chuckster .22 Magnum For anyone interested the magazines that fit the Savage models 4M, 34M, 65M, 93, 93R17, Striker and 982MDL will fit the Mossberg 640K but be prepared to open up the guide lips of the magazine channel a bit. I used a flat head screw driver to do the job. Also be prepared to grind down the magazine guide bar with a dremel tool. It took me all of 15 minutes to make 3 different magazines from different lots of Savage magazines fit my rifle. So it is not that hard to do. __________________ "It is difficult to make our material condition better by the best law, but it is easy enough to ruin it by bad laws." -- Theodore Roosevelt (1858-1919) - 23 Aug. 1902, Providence, R.I.

12-24-2006, 08:21 PM	#4
rangerruck V.I.P. Member Join Date: Oct 2005 Posts: 449	Re: Mossberg 640K Chuckster .22 Magnum tho' I have not had the pleasure of having one, the mossy allways seems to get rave reviews, especially in the accuracy dept. most folks seem to want to hang on to them, and you don't see them come up much for sale.

12-24-2006, 10:55 PM	#5
RimfireRat V.I.P. Member Join Date: Sep 2006 Posts: 141	Re: Mossberg 640K Chuckster .22 Magnum Most info you might need you can find at Damguys site. http://home.epix.net/~damguy/index.html he covers most questions on Mossbergs. The one problem you will encounter is the location of the scope rings. you will notice the rear ring has very little area to mt behind the port.You will not be able to get your scope rearward enough to be comfortable shooting. THE ONLY fix is the BKL offset rings. (I used the #274) these will allow the mounting of most scopes to a usable position. This is a curse of the latter mossberg 300/600 series design. Along with the crappy trigger. the trigger can be worked. Although I have a 640 that will shoot 3/8" at a100yds if i do my part with the original trigger,About 6#s at least.I got my 340 below 3# so Guess I'm gonna work on the 640 this winter. You inherited what will become one of your favorite rifles, enjoy.--JMJ--AKA-- Jim the Mossberg Junkie __________________ "AMERICANS Used To ROAR Like LIONS For LIBERTY,- NOW They BLEAT Like SHEEP For SECURITY."-_Norman Vincent Peale-____________________REMEMBER. "SECURITY WITHOUT LIBERTY Is Called PRISON."---J.L.W.

01-20-2008, 06:35 PM	#7
j_m_ru Member Join Date: Jan 2008 Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum I just bought Mossberg 640K in 22MAG. Nice gun, but it misses rear site. It has see through rings with scope, but I would like to have rear site anyway. Any idea where I can get rear site? Thanks. Last edited by j_m_ru; 01-21-2008 at 10:29 AM..

12-24-2006, 07:51 PM	#2
ken w. V.I.P. Member Join Date: Jun 2004 Location: Buffalo,New York Posts: 216	Re: Mossberg 640K Chuckster .22 Magnum This is one of the most accurate .22 MAG rifles made.The triggers are kinda crappy tho.You have to be real careful what solvent you use on this gun.Some will melt the triggerguard and the reciever cap.Brake parts cleaner is one you want to stay away from.I had to learn the hard way.The kick is no more than a .22 LR. It's a tad louder tho.I have found that scopes are a bit of a hassle as far as fiting on the scope grooves.I wear glasses and had to get an off set ring set to get the scope back far enough to get the correct eye releaf.You have a fine rifle that will shoot well.

01-20-2008, 08:48 PM	#8
whip V.I.P. Member Join Date: Jan 2006 Location: Wyoming Posts: 238	Re: Mossberg 640K Chuckster .22 Magnum I had a 640K Chuckster and it was a tack driver. My one warning would be to not work the bolt really hard on the cocking stroke. I broke the plastic block at the rear of the rifle and the little metal piece that covers the back of the bolt fell down and the next round I bent the metal piece off. Gun still shoots well just doesn't look the greatest.

06-14-2008, 11:52 PM	#9
Mdel19man Member Join Date: Jun 2008 Location: New Hope Al Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum There is one thing to be wary about with this rifle. When you disassemble it, there is a small washer at the base of the guide for the magazine. Be extremely careful not to lose it as I did. The washer will affect the feeding of the magazine. I ended up have to fabricate my own. Other than that it is one of the most accurate guns I own. The kick is nothing to be concerned about. Last edited by Mdel19man; 06-14-2008 at 11:54 PM.. Reason: mispellings

06-24-2008, 10:32 PM	#11
whip V.I.P. Member Join Date: Jan 2006 Location: Wyoming Posts: 238	Re: Mossberg 640K Chuckster .22 Magnum I will second working the bolt easy. I also chipped the plastic block at the rear of the action and also broke off the metal clip that covers the hole. Mine was a tack driver and I used a weaver style .22 mount on the rails. I have regretted selling it but at the time I needed the money. Have fun with it.

08-09-2008, 02:18 AM	#12
DaveLikesTrucks Member Join Date: Aug 2008 Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum I acquired a Mossberg 640K that is not working properly. Previous owner gave me the small washer he found at the time it stopped working. Clearly the one indicated above. Without taking things apart, I can't see where it fits. Could someone help me out with a description or picture of how it is supposed to fit? I'm guessing I need to remove the stock and then I'll be able to access the location of the washer. Please help. Also, will the metal trigger guard from older models fit on this model? Thanks.

09-28-2008, 08:10 PM	#13
Waldo Pepper V.I.P. Member Join Date: Sep 2008 Posts: 67	Re: Mossberg 640K Chuckster .22 Magnum Man oh man where do all you people find these nice old Mossy's? Only ones I have seen are crap that have been badly cared for or chopped up. Some of the old Mossbergs can out shoot very expensive modern target guns with ease. My 142A even came with an adjustable trigger and will do a single hole at 25 yards with good ammo. __________________ Cranky Old Fart DAV Life Member

11-22-2008, 08:45 PM	#14
millman V.I.P. Member Join Date: Sep 2008 Posts: 80	Re: Mossberg 640K Chuckster .22 Magnum I have a 640 KD Chuckster. I love it. I went ahead and D&T'd it, so no more scope mounting problems. Millman

01-09-2009, 09:26 PM	#15
Iceburgh Member Join Date: Jan 2009 Posts: 4	Re: Mossberg 640K Chuckster .22 Magnum My wife just got me a 640K for my birthday. Other than a scratch on the stock, it looks like new. I can't wait to go out tomorrow and try it out. It is supposed to be about 20 degrees, but I'm not waiting for spring.

01-17-2009, 08:23 PM	#17
RimfireRat V.I.P. Member Join Date: Sep 2006 Posts: 141	Re: Mossberg 640K Chuckster .22 Magnum They also made a 640M . "mannlicher stocked version." very hard to find and $500 + bucks when ya do find one. I made my own. this has the sweetest balance and shoots great.--JMJ-- there's one on ******* now for sale __________________ "AMERICANS Used To ROAR Like LIONS For LIBERTY,- NOW They BLEAT Like SHEEP For SECURITY."-_Norman Vincent Peale-____________________REMEMBER. "SECURITY WITHOUT LIBERTY Is Called PRISON."---J.L.W.

02-28-2009, 04:45 PM	#18
rxrivera Member Join Date: Feb 2009 Location: Missouri Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum I've got a couple of 640's that need new stocks. Does anyone know where I might find a stock for a Mossberg 640K?

05-29-2009, 09:38 PM	#20
AWolf Member Join Date: May 2009 Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum My Dad has a very nice Chuckster (what a cool name by the way!) that thing is a scary tack driver .....even if you shoot cross eyed!! i wonder if you give the specs to someone like STOCKYS out of of MICHELE SD if they can make one of those nice lamanated stocks for one .....i have one for my SAVAGE .17 it really dressed it up and helped the balance with that hevy bull barel it has

06-09-2009, 04:02 PM	#22
Dick Bertram Member Join Date: Jun 2009 Posts: 2	Re: Mossberg 640K Chuckster .22 Magnum You indicated that you inherited a Mossberg 640K and asked if there is anything about the rifle you should be wary about. I am the original owner of a Mossberg 640K chambered for .22 Mag; the rifle was purchased somewhere around 1960(give or take a couple of years). I was in the process of preparing the rifle to be given to one of my grandsons and during the sighting in process noticed that this particular rifle can be fired when the bolt is not locked down. The bolt had been inadvertantly bumped which caused the bolt to move upward as if the shell was going to be ejected. The rifle will still fire when the bolt is up in an unlocked and unsafe position. In fact I can actually begin to move the bolt slightly to the rear and the rifle will still dry fire. I know this can happen with a live round because I accidentally fired the rifle when the bolt was in an unlocked and unsafe mode which resulted in a discharge of hot gas from around the bolt and down through the magazine port resulting in a minor powder burn. I have sent the rifle in for evaluation but would urge caution if you own one of the early model 640K's. Last edited by Dick Bertram; 06-09-2009 at 04:06 PM..

09-12-2009, 01:37 PM	#23
jallen Member Join Date: Sep 2009 Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum I am now 61 years old and have been the proud owner of the 640K Chuckster since I was a young boy. I purchased it in the first year of manufacture and it has been lovingly cared for since that time. The monte carlo stock is very nice and it is indeed a nail driver. After returning from the Marines in 1973, I took my young wife to a 125 yard range and we sgot at a large, standard bulls eye target. I was putting each shot in the bullseye and when I handed it to her for her first shooting experience, she was missing the bullseye everytime. I was using a spotting scope and the rifle was fitted with a Weaver scope. Well, when they called a cease fire, I walked with her to check out the target and see where she was hitting. She insisted she hit every shot. To make a long story short, she was shooting at the numbers in the rings outside of the bullseye and HITTING EVERYONE at 125 yards. It is a fine rifle that my kids and grandkids still love to shoot in NY State. The scope does not mount rearward enough, as mentioned, and this makes shooting a little uncomfortable. So, believe me, it is a tack driver to be sure and I was a highly trained Marine Expert rifleman embarrased by a young girl, first time shooter.

09-12-2009, 07:38 PM	#24
GunHugger Advanced Senior Member Join Date: Jul 2007 Location: SW PA Posts: 1,161	Re: Mossberg 640K Chuckster .22 Magnum Since this is a 640 thread I figured I would post some info for everyone. __________________ . “There will be a revolution in this country!” “I don’t believe people should to be able to own guns.” ~Barack Obama "Stand your ground. Don't fire unless fired upon, but if they mean to have a war let it begin here." ~Captain John Parker, to his Minute Men on Lexington Green, April 19, 1775.

01-18-2010, 09:25 PM	#25
Kentucky_Rifleman Member Join Date: Jan 2010 Posts: 1	Re: Mossberg 640K Chuckster .22 Magnum I inherited my Dad's 640 29 years ago, when we started groundhog hunting together. It was and is a tack-driving beast. His model had the flip-down plastic fore-end that makes a forward "pistol grip." It's genius! It makes shooting from a standing position rock-steady. I bought another 640 some years back, because I wanted to keep dad's intact, but I wanted one to customize. I adapted a stock from another old Mossy .22 LR I picked up cheap at a gun show. It took some cutting, but I got the 640 into its new home. Like a few others here, I had receiver-plug difficulties (the plastic plug was broken on the one I bought. It took me a little doing, but I hand-machined a new plug out of solid aluminum stock, matching it to the good one in Dad's rifle. I used woodshop and common hand tools and patience, but I got it done in under 4 hours. I finished the new plug with Brownell's Alumi-black. It came out really nice. I've tweaked the triggers on both. The nature of the trigger keeps me from getting the pull under 2.5 pounds while keeping the gun safe.