Based on John Knuteson's article at Handloads.com (currently seems to be down) I loaded up several sets of .45 ACP to use in my NMB acp cylinder with 11-14gr of Longshot. Very good accuracy and at the upper couple, very high recoil. I decided that for most of my shooting I prefer to get to that performance level using H-110 in my .45 Colt, because of better bullet selection and weight for hunting. I was impressed and keep a little long shot on hand to play with here and there. If the Handloads.com website comes back up, I highly recommend it as it's a good read.
*edit*
As John points out, these loads aren't for any auto-loading pistol on the market. If you drop a few grains you could probably use them in a +P rated auto, however. They were all safe in my Blackhawk and I had almost no primer flattening except on the last set of 14gr.