M1 Garand Ammunition
I just got my CMP M1 a few weeks ago. A friend advised me that I should only shoot ammunition with a certain powder burn rate or I may damage the rifle. Can anyone shed light on this?
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Standard GI loading.
A post a few days ago mentioned an adjustable gas plug that would broaden the range of ammo you can shoot.0 -
the action was designed for the standard M2 ball ammo. hunting ammo has a higher pressure and i think it's the operating rod that takes a beating with the newer ammo 0 -
Congratulations on your Garand. The Garand was designed to use "medium" burn rate powders. 4895 was the powder most used for ammunition for this rifle. If you are reloading, use powders in that range, ie., H4895, IMR4895, Varget, Re15, IMR4064, et. al. If using "store bought" stuff, try to get mil. spec.
The trend in sporting ammo has been to use slow-burning powder to lengthen the pressure curve and get higher velocity. Since the gas port in the M1 is near the muzzle, you do not want ultra-high pressure there.
No doubt, others will be along shortly that can explain this better than I can.0 -
The CMP has stated that more Greek M2 ball will be available first quarter of 2010. They have some match stuff that is good to go in your Garand now, but it is pricey.
Locally, one can usually find milsurp at gun shows. Look for the Greek stuff in the spam can if you can find it. If you cannot find it, it is not worth it to even shoot a few rounds to test your rifle. My first rifle was a Garand, and being totally ignorant, put a box of Federal commercial 30-06 through it, destroying the cam-track in the Op rod. Replacing the Op-rod was a simple fix, and nothing but milsurp has gone through for the last 10+ years.0 -
ill pass along what was shown to me. if you install this in place of the gas plug that came on your your rifle, it wil allow you to adjust for how much pressure is put on the moving parts on your rifle. shoot the m2 ball that the rifle was designed for or a heavy 180gr hunting load. ill be ordering one for my m1a shortly
http://www.midwayusa.com/viewProduct/?productNumber=4120460 -
Ambrose has it correct. If you use modern loads your Op Rod will take a beating and become bent. Either get some surplus ammo (CMP is a good source) or load your own with something like H4895 or IMR4895. the adjustable gas port is also an option if you insist on modern hunting loads. 0 -
If I am correct another feature of the adj gas plug is you can turn down the action so that the brass won't get thrown as far. The more gas pressure you let off the slow the action cycles.
Givette: Place an empty cartridge casing into the chamber. Slowly pull the bolt back. The empty will fly as far as if you just shot the rifle.
The driving force behind the empty cartrige taking flight after it clears the chamber is the little spring inside the bolt (ejector spring). The cartridge should have already been established into free-flight prior to completion of the rearward cycle of the bolt. Hope I helped. Joe
Ok thanks Givette, I never studied the actual force that ejects the cartridge. I think some semi-autos can have their "brass pattern" adj by the travel speed of the bolt cycling, not sure which ones though.0 -
Some good gouge, thanks. 0 -
quote:Originally posted by countryfarmer
If I am correct another feature of the adj gas plug is you can turn down the action so that the brass won't get thrown as far. The more gas pressure you let off the slow the action cycles.
Place an empty cartridge casing into the chamber. Slowly pull the bolt back. The empty will fly as far as if you just shot the rifle.
The driving force behind the empty cartrige taking flight after it clears the chamber is the little spring inside the bolt (ejector spring). The cartridge should have already been established into free-flight prior to completion of the rearward cycle of the bolt. Hope I helped. Joe0
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