Cast Lead Thread ?

[Marty Henry]

I've never cast anything smaller than .3 a ,22 would be a couple of drops of lead and keeping the mold at temperature could be difficult. In reality you will be making somewhere between a .22 and .22 magnum velocity wise. Conventional wisdom says you will get to about 14-1500 fps without gas checks before you encounter leading and up to 2000 with gas checks possibly a bit more with a suitably hard alloy which will resist stripping at high speed especially in a fast twist barrel . Powder coat keeps the lead from contacting the bore so acts a bit like plating enabling higher velocity. Gas checking really just protects the base of the bullet from melting and I doubt its needed with powder coat.