Quote:
Originally Posted by stansdds
NATO ammo pressure almost perfectly splits the difference between SAAMI standard pressure and +P pressure specifications. It's not as hot as many believe. Except for that NATO ammo made by Hirtenberger that was specifically for submachine guns. Don't know how much of that stuff is still out there as it was produced only in 1991, 92, and 93, but it is reported to be really hot ammo. FYI, that ammo is marked HP-91,92, or 93- L7A1 - and the NATO acceptance stamp.
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This is what I always understood. I do not own a chrono, but I do have a good hand-dyno with 30 years of shooting exp.
I've ran some stout 9mm rounds, mostly +P and +P+ offerings from Winchester in their Ranger line (as well as +P+ 9mm 9BPLE from Federal). Those 9BPLE rounds are down right hot, the recoil from them is notable compared to STD.
The difference from STD to +P, to +P+ is definitely notable. I have quite a bit of Winchester 9mm NATO and I'll say that it seems just slightly hotter than STD pressure rounds. I even ran a staggered magazine to see if I could tell the difference, it wasn't big.