The part I dont get is, if +P+ 9mm is a 40,000psi round (Speer seems to consider it that anyway), like 357SIG and close with the 40S&W, why doesnt my 17 exhibit the same peening problem the 357 and 40 Glocks do? All used the same RSA. Different pressure curves maybe?
I had a couple of P226's and 229's as well, in 357SIG with .40 barrels for each. Never found them to be a problem to shoot well with, or any harder or easier to do so quickly, than anything else.
Wear wise, the rails showed some chipping or flaking, but nothing any worse than my .45 or 9mm SIGs.
Are we talking the same bullet weights here? These comparisons often start to run off into "mixed fruit" when people want to prove their choice is better.
If both are maxed at 40,000 psi, and using bullets of the same weight, how do you get these 500 fps differences in velocity?
Jello is simply the baseline for comparison and a standard. Not that it really matters, as pistol calibers suck as stoppers, and regardless what you have, the "rule" is still always the same. You shoot the target to the ground. To do otherwise, and believe you have some sort of magic bullet in the gun, is foolish.
How much do you shoot it?