Quote:
Originally Posted by john traveler
My shooting friends and I have loaded and fired many tens of thousands of rounds of .30 M1 Carbine using H110, WW 296, and Hercules 2400 powder behind 120 grain RNGC Lee bullets and various Lyman RNGC bullets up to about 125 grains. No leading problems and no functioning problems either. If you don't use gas checked (GC) bullets the gas port may tend to clog up with extensive shooting and cause short recoil malfunctions. No problem. Just get a gas piston removal tool and clean the port using a hand-tuned drill bit that fits the port.
Using 110 grain RN jacketed and Hornady 100 grain half jacketed bullets, we have had no problems at all.
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This mirrors my own experience. Gas check bullets, OK (the gilding metal cup on the base provides a scraping action, clearing lead from the bore and preventing excessive deposits through the gas port). No gas checks, no use in my carbines.
Repeated removal of the gas piston results in unnecessary wear. While it is not an overwhelming job to accomplish, it should be done sparingly, if at all.