goathollow
Member
Up to what velocity can you shoot cast lead bullets before leading occurs?
Depends upon bullet fit in the barrel, bullet hardness, and if the bullet is gas checked or not.......among other variables I would imagine.
goathollow said:Up to what velocity can you shoot cast lead bullets before leading occurs?
Leading caused by the bullet.
The cause of leading can be traced to the bullet if it's the wrong hardness for the application, the wrong size for that particular gun or a plain base design in an application that calls for a gas-check. As discussed above, too soft of a bullet (e.g. BHN < 8) can be stripped if pushed too fast, while a bullet that's too hard (e.g. BHN 22) can fail to obturate, and lead the trailing edge of the lands. This is a common problem with commercial hardcast bullets pushed at intermediate velocities. The bullet can also be the source of leading if it is sized too large (lead build up in the forcing cone) or too small (coated over the entire bore). The bullet can also be the cause of leading if the sixgunner is using a PB bullet in a load that generates more than about 40,000 psi peak pressure or 1500 fps muzzle velocity; these applications are better served by GC bullet designs.
Well that pretty well covers it, thanks!There are many factors that contribute to leading - http://www.lasc.us/Fryxell_Book_Chapter_7_Leading.htm