JimGnitecki
Member
- Joined
- Mar 28, 2010
- Messages
- 1,258
I am posting this in case it might help anyone who is trying to make a relatively soft cast lead bullet work at more than just low velocities and pressures.
I am currently successfully testing the following:
- a 499g cast lead 45-70 bullet sized to .4595" (actual digital micrometer reading average from a Lee .460 sizing insert), in a Pedersoli barrel that my gunsmith has measured to be .4563".
- Bullets were Lee tested to have a BHN = 10
- powder coated (no other lubricant used) with Eastwood Gloss Black powder
- with a muzzle velocity of almost 1400 fps (1348 and 1371 fps averages from 2 different range sessions)
- with a powder load that the load tables say is creating 28,000 psi
I see no evidence of leading when I clean the bore.
The bore remains remarkably clean and cleans up very easily with just a few patches wetted with M-Pro 7.
Maybe I just got lucky, but it APPEARS that powder coating can make a low BHN bullet not only survive, but shoot well and clean up easily.
Jim G
I am currently successfully testing the following:
- a 499g cast lead 45-70 bullet sized to .4595" (actual digital micrometer reading average from a Lee .460 sizing insert), in a Pedersoli barrel that my gunsmith has measured to be .4563".
- Bullets were Lee tested to have a BHN = 10
- powder coated (no other lubricant used) with Eastwood Gloss Black powder
- with a muzzle velocity of almost 1400 fps (1348 and 1371 fps averages from 2 different range sessions)
- with a powder load that the load tables say is creating 28,000 psi
I see no evidence of leading when I clean the bore.
The bore remains remarkably clean and cleans up very easily with just a few patches wetted with M-Pro 7.
Maybe I just got lucky, but it APPEARS that powder coating can make a low BHN bullet not only survive, but shoot well and clean up easily.
Jim G