BigMacMI
Member
- Joined
- Nov 17, 2016
- Messages
- 127
So, I slugged my M&P. I had seen that the lands/grooves were opposite of each other. I did try to grasp the widest part of the slug, and was able to determine at it's widest part (basically catching the edge of 2 opposite grooves), I was getting 0.3555. If I am casting, i want 0.002 over this? That would put me real near 0.357 for a cast bullet.
I plan to powder coat, which I gather adds 0.001 to 0.002 to bullet diameter.
Getting first mold. Would you think 0.356 and then PC it?
I am hoping for the holy grail that I can shoot after coating without sizing, but will get sizer as needed.
It stands to reason 0.358 would be a bit aggressive for diameter before PC
I plan to powder coat, which I gather adds 0.001 to 0.002 to bullet diameter.
Getting first mold. Would you think 0.356 and then PC it?
I am hoping for the holy grail that I can shoot after coating without sizing, but will get sizer as needed.
It stands to reason 0.358 would be a bit aggressive for diameter before PC