Has anyone used the 155 grain Silvertip 40 S&W? I saw some advertised at 1200 fps and I believe 500 ft/lbs of ME. To me that's impressive. My Sigs handle 40 pretty easily and I'm wondering about the recoil and "snap", which I've heard can be a problem but haven't experienced for myself. Currently I use 180 and 165 grain HST's but I like the old Silvertips. They've worked for me before in 45 ACP/185 grain.