I would guess that the 2 inch 45 would do about 600-700FPS with a 230gr because a 3.5 inch glock 45 ACP dose about 750 FPS with standard 230gr ammo IIRC

i talked to them once about that and i was told that most everything is rated for +P nowdays just because ammo screw ups can and dose happen, if one did shoot +p in it i wouldnt feed it alot of it though