7x57 Mauser target load for my M1 Garand

Bruce Drake

Member
Yes, its not a typo. I rebarreled a M1 Garand with a 7mm Mauser short-chambered barrel a few years back to replace a worn out barrel (for collectors, it was a mixmaster from Blue Sky Imports that my Dad bought in the 80's so no harm was done and the barrel was a very welcome birthday gift). As well as replacing the barrel, new oprod spring, stock and an adjustable gas plug, I finished chambering the barrel after I had a gunsmith in Michigan (http://shuffsparkerizing.com/services/m1-garand/) do the barrel replacement and timing the barrel to the receiver.

Well, for the last couple of years, its been fed a diet of 38.5gr of IMR 4895 with 140gr Remington spirepoint jacketed bullets for NRA rifle matches but in my goal to shift over to shooting more cast bullets, I finally sat down and developed an initial starting load for it with cast.

Lyman 287405-150gr Louverin design gas checked with two coats of Eastwood PC Paints (one before and one after the bullets are gas-checked and sized at .285)
Winchester 30-06 cases (brand-new and trimmed down and resized at 57mm.
Winchester LR Primers
31.5 gr of IMR 4895
reduction formula from Lee's Modern Handloading put this load at 2100fps.

9035
offhand target at 50 yards. It even fully-functioned with the gas plug set for the previous jacketed load I mentioned earlier. No leading or excessive fouling either.

I will try to do another shooting test on this for 100 and 200 yards before the end of the summer.

Bruce
 

Ian

Well-Known Member
You had me at 7x57 M1, what a neat idea.
Good shooting from your hind legs there, too.
Any particular reason for powder-coating twice?
 

Bruce Drake

Member
You had me at 7x57 M1, what a neat idea.
Good shooting from your hind legs there, too.
Any particular reason for powder-coating twice?
to ensure the gascheck stays put. I still size both of the powder coats to allow them to fully chamber.

And the bore is as clean as a Whistle now

Bruc
 
Last edited:

Bruce Drake

Member
I'd bet he is trying to get to 286.
I'd love to find an Original NOS rifle barrel from a viable importer or have the old barrel rebarrel rebored to 35 Whelen.

I liked the idea of the 276 Pederson cartridge. Not too big, just on the right side BUT brass would require a new 10 round clip that is no longer in production and neither is the cartridge itself The cartridges came in a 10 round clip and the cartridge was based off the 6.5x54 Mannlicher Schoneour. I chose 7x57 as it was a gift from a friend. I plan on bringing him a bowl full of targets shot with the barrel. The 276 Pederson is a 7mm cartridge except in loading department. It is also predicated if the original cases were oiled which meant dirt would be attracted to it which also leads to excessive wear and turn on the rifle.
The Barrel is Barnett steel. Not sure if Barnett is still around but Lothar Walther in Atlanta offers Garand barrels in the bores that you choose.
Bruce
 
Last edited: