It's impossible to do a truly fair comparison, because hopefully anyone who practices as much as I get to will be improving his overall skill regardless of gun. If I put 10,000 rounds through my G17 in the first month, I'd expect to be shooting that gun better than the P30 I haven't shot seriously in more than a year.
Having said that, there are some very noticeable differences at the outset.
I'm getting much faster followups on the 3x5, substantially faster. That suggests to me that the gun isn't moving as much in recoil. Is that because it has a higher bore axis, or because I shot 50k rounds of .45 last year and my grip/stance/technique improved?
My reloads are noticeably slower, and I am fumbling a higher percentage of reloads. The change in grip angle is causing me to bring the mag to the gun at the wrong angle. I've got some ideas that I hope will speed up my relearning on this, but for the moment my typical reload with the Glock is about a quarter second slower than it was with the P30.
I don't have the records in front of me (I'm on my iPad in Sacramento and the database in on my computer back home). My personal lega (by the rules) best was 4.08 with the P30.
Yes.
124gr +p HSTand what carry ammo do you plan to run in it?
I find it to be significantly better, especially combined with the dramatically improved mag catch button. Even better is the FBI (slightly) extended Gen4 mag button. Hopefully, we'll see a Vickers gen4 mag button before too long.
Absolutely. You're talking about more than 10% reduction in overall time. That's incredibly significant. I've shot plenty of ~4.60 or better FASTs, but very few ~4.10. If you typically shoot a 10sec FAST, taking half a second off isn't nearly as big a difference compared to someone taking that same half a second off a 5sec FAST.