SSN Vet
Member
I recently purchased a new mold (Lee TL358-158-SWC) to cast this boolit from 75% WWs / 25% pure Pb.....
My boolits are measuring .359" on one axis & .360" on the other (slightly out of round) on the bottom driving band and .358" on the TL grooves.
I will be shooting these from a 6-1/2" .357 mag revolver, which I attempted to slug tonight. But the barrel has 5 grooves, so I can't measure the dia. straight across. I played around with rotating the boolit in the caliper and also dropped the boolit into a drill index and attempted to measure the play in a 23/64" drill index (coming up with ~.356" to .357"), but can't say that's an accurate number.
How can I read my slug, without a hole gage set?
Do you think these boolits are safe to test fire with a modest load (3.7 gr W231) in a 38 spl case?
My boolits are measuring .359" on one axis & .360" on the other (slightly out of round) on the bottom driving band and .358" on the TL grooves.
I will be shooting these from a 6-1/2" .357 mag revolver, which I attempted to slug tonight. But the barrel has 5 grooves, so I can't measure the dia. straight across. I played around with rotating the boolit in the caliper and also dropped the boolit into a drill index and attempted to measure the play in a 23/64" drill index (coming up with ~.356" to .357"), but can't say that's an accurate number.
How can I read my slug, without a hole gage set?
Do you think these boolits are safe to test fire with a modest load (3.7 gr W231) in a 38 spl case?