Jacketed v. Lead Bullets

[tmark]

I have reloaded unjacketed lead bullets for my 45 ACP with no problems of leading in the barrel (probably because the bullets were waxed).

I've always used jacketed bullets for my M1, O3, and O3A3. I am concerned about lead build-up if I use unjacketed lead bullets because of the increase in bullet velocity compared to that in a pistol.

Should I be concerned? Any input on the matter is appreciated.

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[Matt Anthony]

You need to purchase the Lyman Cast bullet Handbook. I've been shooting cast bullets for over 45 years in 6 different rifle calibers and have never had any problems with leading. Moderate velocity, gas checks, a good lube such as Lyman Orange Magic, Super Moly or any of the premium Alox blends will stop any leading. I have also taken deer, coyote and prairie dogs with my cast bullets without any problems.
My only concern is the M1, as this gun was never intended to use cast bullets and I'd be afraid of gumming up the mechanisms.
Matt

[AKA Hugh Uno]

usually most folks advise against shooting lead bullets in an M1, but it is done by some. the concern is that the gas port in the barrel might get clogged, although one Mark 1 paperclip can solve this problem (should it even occur).

frankly, it sounds as if you may not be aware that lead bullets in rifle loads TEND to be significantly slower (almost always 2000fps and usually significantly less). Gas checks on bullet bases (for rifle and pistol bullets) TEND to be used when velocities go above 1500 fps or so (although some people can go faster without them) and defintely above 1800 fps.

There is almost NO ADVANTAGE cost wise in buying cast lead bullets with a gas check as they tend to be almost as expensive as jacketed bullets. Make your own out of wheelweights and keep velocities low and you can shoot the 03 and 03A3 forever an not wear out the barrel.