It’s been a while since I modified that magazine, so I don’t specifically remember. Looking at it now I’m guessing that I either scored it repeatedly in the corner with a knife until it came out, or I might’ve used some kind of wire cutters or snips to cut out the plastic plate. Then I probably...
I was trying to work up a load with that combo. Settled on 25.0gr varget at 1.905” cbto. Getting 2910fps in a 22” tikka. Accuracy never came close to berger 80gr vld’s so I gave up.