sako 300 win mag chambering problem - The Firearms Forum

m77user · 10-17-2012, 03:53 PM

I have a friend who shoots a 300 win mag. It is a Sako do not know the model he bought new in the early 70's. We both reload and he has been shooting the same loads since it was new. It suddenly developed a problem with chambering. He has tried full length resizing and trimming to 2.610 to no avail. I have a set of small base dies for a BAR in 300 win. Even after full length sizing through the small base dies it would not chamber. After trimming his brass to a length of 2.603 the rifle will now chamber with slight pressure. Anyone have any ideas as to why all of a sudden this would occur? I suggested he take it to a gunsmith as I am not one. I

do not feel like the brass should be trimmed that short. Thank you for your help.

CHW2021 · 10-17-2012, 04:33 PM

Sounds like there is something happening with the chamber or bolt. Look at the extractor for damage and check the chamber, maybe carbon or possibly a fragment of case or jacketing in the chamber.

Skipper · 10-17-2012, 06:41 PM

It's common with belted cases. You might need a Belted Magnum
Collet Resizing Die.

Scroll down the page here:

http://www.larrywillis.com/

m77user · 10-18-2012, 04:20 PM

thank you. I will pass it on to my friend and he can proceed as he wishes. Thanks again.

karbeer · 10-19-2012, 03:10 AM

I have searched for this and I found The term belted magnum refers to any caliber cartridge, generally rifles, using a shell casing with a pronounced "belt" around its base.

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your outta here

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10-17-2012, 03:53 PM	#1
m77user V.I.P. Member Join Date: Sep 2012 Posts: 149	sako 300 win mag chambering problem I have a friend who shoots a 300 win mag. It is a Sako do not know the model he bought new in the early 70's. We both reload and he has been shooting the same loads since it was new. It suddenly developed a problem with chambering. He has tried full length resizing and trimming to 2.610 to no avail. I have a set of small base dies for a BAR in 300 win. Even after full length sizing through the small base dies it would not chamber. After trimming his brass to a length of 2.603 the rifle will now chamber with slight pressure. Anyone have any ideas as to why all of a sudden this would occur? I suggested he take it to a gunsmith as I am not one. I do not feel like the brass should be trimmed that short. Thank you for your help. -->

10-17-2012, 04:33 PM	#2
CHW2021 V.I.P. Member Join Date: Feb 2009 Location: Louisiana Posts: 467	Re: sako 300 win mag chambering problem Sounds like there is something happening with the chamber or bolt. Look at the extractor for damage and check the chamber, maybe carbon or possibly a fragment of case or jacketing in the chamber.

10-17-2012, 06:41 PM	#3
Skipper V.I.P. Member Join Date: Jul 2008 Location: People's Republic of Kalifornia Posts: 337	Re: sako 300 win mag chambering problem It's common with belted cases. You might need a Belted Magnum Collet Resizing Die. Scroll down the page here: http://www.larrywillis.com/

10-18-2012, 04:20 PM	#4
m77user V.I.P. Member Join Date: Sep 2012 Posts: 149	Re: sako 300 win mag chambering problem thank you. I will pass it on to my friend and he can proceed as he wishes. Thanks again.

10-19-2012, 03:10 AM	#5
karbeer Member Join Date: Oct 2012 Posts: 1	Re: sako 300 win mag chambering problem I have searched for this and I found The term belted magnum refers to any caliber cartridge, generally rifles, using a shell casing with a pronounced "belt" around its base. Note from a moderator Spam sigs will get you banned update , your coming from one of the highest reported spam servers in the USA your outta here The IP Address is: 68.234.22.40 The host name is: reverse.aeori.com Attached Images Last edited by jack404; 10-19-2012 at 03:44 AM..