Any issues?
Leading comes from bad fit more than anything else.
Slug the bore, size .001 over, use a good lube and chase 2200 fps. I run cast lead bullets that fast out of a number of my rifles with no lead buildup.
I have run hard cast bullets at 2,000 fps with accuracy and zero issues. I have run hard cast bullets at 850 fps that were total disasters. Your issues will depend on hardness of the bullet, obturation of the bullet (function of pressure & hardness), bore condition, diameter of the bullet, lube and type of lube, bullet design, what color socks you wear and a number of other things. There are some forums that focus on cast bullets a lot. Carbine velocities nearly always means gas checks.
There is a great satisfaction in making cast bullets (a vague a definition as "big dog") behave with great speed and accuracy. But it is as different from jacketed bullets as day is from night. Tons of fun.
Quote from: Bat Rastard on December 22 2017 05:39:26 AM MST
Any issues?
Hardcast bullets have been used in 357 magnum revolvers and rifles without problems. 9mm isn't much different than 357 (.356 vs .358 diameter and both operate at the same pressure: 35K psi)
.