I see this all the time and have no idea why things like "
a good coating of HiTek will get you to about 2000 FPS without leading" this keep getting posted???
2000fps is child's play for a coated bullet. Back in 2013 I was testing coated bullets looking for an alloy for hunting. A cast bullet that was not lube/temp dependent appealed to me. As you can see the lower velocity bullets shattered and the 2300fps bullet bent. That 230gr/50,000+psi load/bullet has an alloy I still use to this day.
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The pc coating stays on and has to mechanically be stripped off.
The pc coating does not fail causing leading
Some coating will actually start to scorch/burn when driven too hard from friction. When I started pushing pc'd bullets over 2700fps I started seeing this in the bbl.
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Simple enough to fix, I simply tumble lube the pc'd bullets with 45/45/10 or give them a light coat of johnson's paste wax.
Anyway you don't get leading from a coated bullet unless there is a mechanical issue like the coating got scrapped off during seating the bullet. Crimping too much cutting ("cutting") thru the coating. Scraping the coating off from edges in the chamber or rough spots in the bbl, etc.