Thanks! I'll just pick up a CC flat bottom 8 rounder. I wonder why they make the standard Thunder and FireStorm mags 7 rounds. I plan on messing with the one factory 7 and making it an 8 rounder.
One difference between Thunder and FireStorm, besides grips, is that the FireStorm is assembled in USA using all Argentine parts. Also the trigger guard on the FireStorm is rounded (instead of the Thunder's bump on the front), so it can use all Walther PP holsters (that's what I am using for an IWB holster is for a Walther PP). The FireStorm is aluminum framed, and has a nice matte finish overall. Aren't some Thunders steel framed?
I REALLY like the grips on the FireStorm. They fit my hand perfectly. After shooting my Glock 19, Kahr polymer framed CW45 45 ACP, and my 2" Taurus 85 with .38 Special +P+ loads, the recoil on the FireStorm was non-existent, even with the Federal Hydra-Shock's 90 grain bullet at 1,000 FPS.
"Shooting the Bull" labs did extensive testing of all .380 loads using ballistic gel and 4 layers of denim. The Federal Hydra-Shock was an absolute top performer, passed only by Buffalo Bore's 90 grain +P. Hydra-Shock even performed slightly better than Hornady's Critical Defense, The federal maintained the FBI's 12" penetration minimum, ad opened up to .48" or so, even after denim.
Final Results of the .380 ACP Ammo Quest | Shooting The Bull