Excessive smoke in M1 Grand shooting cast

[Bigmancrisler]

Master Po M1 Garand Reload Data
https://r.tapatalk.com/shareLink/top...ink_source=app


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[fgd135]

Old Master Po is useful data for jacketed, not cast, boolits, fwiw.

[Bigmancrisler]

Old Master Po is useful data for jacketed, not cast, boolits, fwiw.

Figured it couldn’t hurt to have the information in another corner of the internet lol


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[JWFilips]

PC or Lubed? If Lubed What lube?

[Alstep]

Old M1 highpower shooter here. Stay away from slow powders in the M1. Since slow burning powders burn slow, the pressure is higher near the muzzle because the powder is still burning as the bullet passes the port. That high pressure has a tendency to slam the op rod, sometimes bending it and certainly putting extra stress on the rest of the moving parts. Not to mention the bolt slamming into the back of the receiver.

Medium burning powders are pretty much consumed by the time the bullet passes the port near the muzzle, so the pressure is much lower, and everything functions reliably without beating up the rifle.

Powders like Varget, 4895, 4064, 748, RL-15 are ones recommended for the M1 & M14.

[LeonardC]

When I first read this thread I kind of cringed at the mentions of "worn op-rod spring". I would not run my Garands with a weak op-rod spring. I recently bought some new ones from ORION 7 and they can be bought from GarandGear as well. $7 or $8 each is $ well spent.