Originally Posted by
gloob
More usually, when the bullet engraves into the leade, the bullet locks in place and won't come back out without a fight. If they shave lead when chambering, but they don't seize and lock in there? I suspect your G3C barrel has 2 things going on.
The leade is very sharp/abrupt, and the freebore is a bit generous to allow enough room for the shavings without locking up the bullet.
You can probably try a larger size bullet, say 357 or 358 to fill up the freebore a little better. But to avoid cutting into the leade, you probably want to try new bullet/mold that is shorter. Because my crystal ball says you don't want to pay a smith to extend your freebore and/or taper the leade, since you bought a G3C and want to reload lead bullets.
If you want to do some shadetree smithing, there are a variety of ways to taper a sharp leade. That might buy you a little bit of OAL. But you won't be able to increase the freebore by much, short of using proper reamer.