Re: 338 Marlin Express-Lever Action
I've got a 1968 336RC straight stocked model in 30/30 and looks like it is in excellent condition. It has had a box or two of factory loads through it and no failures.
With reloads there were lots of misfires. The CCI primers were the worst. I've been reloading for 53 years and never had a problem like this. One thing I learned was the rim thickness really varies on 30/30 brass. I have shot reloads in M94's without any problems.
Anyhow I tried all the remedies from Marlinowners.com including a new rear firing pin, spring, and main spring. They were out of the front pins. A little better strikes but still have misfires. The headspace is within specs. I guess a one piece pin is the only way to go, and I'm not sure that will work.
Send it to Remington, uh I don't think so.
Not really trying to change the sbuject, but as far as misfires there seem to be quite a few 336's no matter what the age that have had this problem.