I just purchased an old marlin 3030 that was made before I was born,,,,its that old....lol...but if feels right. I understand from talking with a friend who has much more reloading experience then i do especially with 30-30 lever style rifles,,,,that you should not try to hot rod the round because of something call breech face pressure.....he has told me that accuracy can be surprisingly good out of these rifles, the fun with these rifles is bringing that out by handloading......I mentioned using lead on the mg barrel and he said no problem ....."ya ever heard of gas checks" and showed me a box he had cast and was reloading from....while Ive not done this yet it is going to be worth trying...fubsy.