30-06 and 300 Min mag pet loads

What is a Min Mag?

 

Win Mag, GRUMPY!

 

Are they better, maybe, depends on what you consider better.
If you are "satisfied" with your loads and how the perform then you can certainly leave well enough alone.
If you are like me and enjoy reloading and experimenting with components both new and old, the go for it, get some new powders and some new bullets and experiment away.

 

.300 win mag: 168 gr. Barnes TTSX on top of A WHOLE LOT OF RL22 with a Nosler case and a Federal 215m primer. Typically "mickey mouse" groups and 3,300 fps.

 

I use RL22 with Nosler 180 Partitons. Savage 110 26 in. barrel 300 yds. I am getting nearly moa. My eyes are not what they used to be. 300 Win. Mag I also use the Fed. 215 primer and don't seem to get as much residue in the primer pocket.

 

Forget the 300 Min mag and get a 300 WSM and use RL 17 powder.

Get the same or more velocity with LESS powder and kick.

 

I tried the 130 TTSX in my .300 a few years ago. The ballistics to 300 yards were impressive but it gives up a lot after that. I killed a NICE coastal blacktail 3 X 4 at a ranged 326 yards. The shot was rear quartering, I just aimed for hair and cut loose. The bullet hit the fifth rib back, transited the body cavity and blew out the off shoulder. Everything in between was pudding. My rifle would not group better than about 3/4" and I was concerned about barrel life so went back to the 168 gr. TTSX.

I have quite a bit of experience with both the .300 win mag and the .300 wsm. Shooting over a chronograph proved to me that the wsm is NOT a .300 win mag and you probably will never make it into one. That's okay; it's a good cartridge, but don't confuse it with the win mag. There IS a possibility of getting win mag velocity out of it with some bullets using the new Hodgdon Superformance powder but have not yet put any downrange. There are limitations in bullet weight to consider as well.

The PERFECT .30 caliber IMO is the .300 Weatherby mag. It's another step above the win mag but below the Ultra mag. About 150-200 fps better across the board and pretty impressive groups in the Vanguard I've shot. I will say that I'm glad it has a 'brake on it though.

 

Yes it's up there. If I had to guess I would say about 82gr of R-22 pushing the 300Win Mag cartridge past the SAAMI 62K MAP and into WSM territory of 65K MAP and beyond.

Good guess or no?

 

Gosh; I'm kind of reluctant to put charge numbers up there, but will make an exception. In the case of the 168's the load is 77.0 gr. It's right at 100% load density with the Nosler custom brass and yes; it's chronographed at a velocity of 3,355 fps average. Pressures are below maximum based on all available evidence.

The 130 gr. load used 83.0 gr. of RL19. I don't have the exact velocity figures in front of me.

I will point out that my rifle is a Remington 700 LSS with a 'brake installed and has a very long freebore in it--reminiscent of the Weatherby MK V throat. It has had several hundred rounds through it using only Nosler brass. The loads are at or exceed book maximum by a small amount after considerable time at the loading and shooting bench.

I am forced to use the non-toxic stuff due to my being deep within the condor zone in California, but my experience with the Barnes has proven that it likes to be driven hard to deliver the best accuracy. Please don't use my data in your rifle without carefully working up to it.

The best I've ever been able to get out of the .300 wsm using the same bullet is just shy of 3,000 fps using Federal brass. I have not done much with Superformance powder in that cartridge, but the little I have done (with mediocre accuracy) put the velocity up to around 3,100 fps with that same bullet.

 

Wow, 3350fps with less than Max load. The max velocity for the 168gr is about 3200 with a Max of 79gr of R-22.

Two grains under with that much more speed? How far do you have that Chrony from the muzzle?

 

8-10 feet. I do attribute much of that simply to the geometry of the barrel and the throat. I had considerable difficulty getting this gun to shoot, but it's consistently shooting under 1/2" now. Copper fouling hasn't been bad in this rifle either for whatever reason. It usually only takes 20 minutes or so to bring it back, unlike my Browning 7mm r.m. which takes all of TWO HOURS of CR10 bore cleaner to get back to a ready condition.