So I need some help
My first casting session went well and i was using my new MP 147gr round nose flat base. I coated them 2x with hi tek black 1035 which passed both tests.
I did notice the lube groove was not coated
I loaded them over 2.8 and 3gr of titegroup 1.095 had to seat them that deep to pass the plunk test. And I used a lee FCD with about 1/2 turn of crimp.
I flared the cases good so I don't think coating was scraping off the base, but it could have possibly been scraping off the top of the lube groove, the groove seems kinda sharp but I'm not sure cause I'm new at this.
I sized both to .356 and .357
The last half of the barrel was leaded majorly in about 6 rounds in a Glock 43
I will pull some shortly and see if maybe the lee FCD was sizing them down
Alloy was water quenched COWW
Any other ideas?
Thanks!!
Pic of bullet
Update:
Well I chamfered the cases and that took care of the case cutting into the boolit problem, but I made some dummy rounds just now just seating the boolits that deep and just taking the flare back out of the case not even really crimping it was squeezing the bases down to .352-.354
I guess that means the lee FCD isn't the problem
Dang that makes me kind of dissapointed i guess that means this problem is basically unavoidable?
Do I need to find a mold with a bevel base?