The +P .45 ACP's are rated at 23 kpsi, while regular .45 ACP's are 21 kpsi. The added oomph may mean an 800 fps 230gr bullet from a normal load would make 820-830 fps from a +P load - not a huge difference. My worry over the CCI Blazer Al stems from my use of their .44 Special 200gr Gold Dot Blazer's in my 696/296's years ago. I had one split it's aluminum case in the 696, ending my use of them. I had used thousands of their .45 ACP ball ammo from my 4" 625-8 nine years ago without incident. That use was curtailed when I started adding .45 ACP to my reloading schedule. As has been stated, the Al cased ammo was difficult to load into the Ranch Product steel moonclips, as supplied with S&W .45 ACP revolvers, and often was stiff in the clip, making insertion into the cylinder problematic. I found that Remington and Starline brass loads easily by hand - and their loaded moonclips drop effortlessly into the cylinder almost as if on a tractor beam, if 230gr RN FMJ's are used. They'll spoil you for any other moonclip use, that's for sure. Of course, the el-cheapo WallyWorld 250 round packs of ball ammo are Remington/UMC made - good old Remington brass - the reason I suggest them. Just my opinion from my experience.
Stainz