Interesting thing happened. When I went to empting the cylinder of the first six 3.7gr, one casing didn't drop out. Pulled it out by hand, and the casing was split, starting about 1/4 in. from the mouth, going to 1/4 in. from the rim. No sign of high pressure from the primer point of view...must have just been a weak case.
I checked the inside of the cylinder it was in, and absolutly no sign of any problem.....man, I really love this GP100.....
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