Howdy gents,
I am interested in increasing the usable COAL length in the mag so I can seat a 75 gr Amax closer to the lands.
I have a couple of questions...
Can I drill out the rivet at the back of the mag, remove the black plastic block and shave it down a few thousandths and then somehow get another rivet in there and see if it works?
I know if I screw it up I can just get another mag but would rather use that money towards bullets or powder if I can do it right the first time.

Thanks for your time and advice.