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One observation is, the primers were slightly flatter in the Glock 40 MOS (middle pic) than in the Glock 20 (Top Pic) but by only a very little bit. Which the Glock 20 had virtually no flattening at all. The Banshee had the most flattening by a Longshot (no pun intended) (pictured bottom)
I'm not positive that this indicates a greater PSI pressure build up, but it could. Design of the gun can play a role in this, and other factors than just straight up CUP/PSI. Ain't no telling for sure. Primer reading has been proven to be junk science, but I still look at them with a grain of salt.
The Glock brass are all in excellent shape thanks to the Aftermarket Lone wolf (20) and Alpha Wolf (40) barrels which offer better chamber support than do the factory glock barrels.... there will be no "smiles" involved and these will all be reloaded again with a standard Dillon factory Resize die. No roll size/Push through required with these great barrels, even with maximum loads. Well worth the 100$ or so price tag for the extra chamber support and ability to shoot raw lead. Supposedly this can come at the cost of cycling relibility, but if you keep your ammo to spec, reliability is typically never a problem...
Data on the way shortly....