It's a good thing I bought a new helmet last year. This one has holes in it.
A few from .22 caliber pellets, 17 grains at
God only knows what velocity. The rest were from +p Super Vel, +P Quik-Shok, +P Pow'RBall, 185 grain Speer Gold Dots, 185 grain +P Remington Ultimate Defense (Golden Saber BJHP), 230 grain FMJ-FP DoubleTap, 185 grain Taurus Hex Bullets (99.95% pure copper), G9 Defense +P 165 grain Woodsman and +P 117 grain External Hollow Points (1480 fps)
, 230 grain ball Aguilla, and 185 grain BEB (Brass Enclosed Base) Winchester white box.
I saved enough DoubleTaps to fill 2 mags after shooting 10 rounds, one magful of each type of G9 ammo after shooting 5 rounds of each, and 10 rounds of Remington ammo after firing half a box. I think I only had 10 Quik-Shoks, 10 Hex Bullets and 10 Gold Dots in a plastic bag after shooting the other half some other time. I shot however many rounds of Aguilla were left in a 50 round box. I think it was 80% full but don't really know. I have 10 rounds of the WWB left because I didn't feel like filling another mag 2/3 full just to get rid of them. That, the Gold Dots, and Aguila ammo were only 18 years old. The Pow''RBalls and hex bullets are 3 years older than those, and the Quik-Shok is 3 years older than them (Y2K). I don't know what happened to the Super Vel box but it was probably close to 24 years old. The DoublTap is maybe a year old, and the G9 and Remington are new. A few rounds of various ammo fed most of the way but needed a little push on the back of the slide to nudge them in. But most of it worked in the 3 15-round mags.
The 20 pound recoil spring isn't really necessary, and the 18.5 pound spring I had before seemed to be a little more reliable overall. But 20 pounds works well with the +P ammo I shoot a lot. If I shot mainly ball ammo I'd go back to the 18.5 pound spring recommended by Para when I bought the kit 36 years ago. I run a Shok-Buff in it and wish I knew about them sooner. Maybe it wouldn't sound like a maraca when I shake the gun. Aluminum frames can't handle the beating they get from +P ammo and no Shok-Buff as well as steel does. When I was shooting and noticed how the recoil was I think I finally realized why so many people buy 9mm pistols. But I don't see myself switching to a .35 instead of a .45 because of the kick.