I've got a box of 44 mag loaded up with the 265 grainers. Going to try them in a Ruger Redhawk. The Redhawk cylinder is pretty long so crimping into the canular the nose doesn't poke out of the cylinder. That is one thing to be aware of with revolvers, they are long bullets, they stick out of the cylinder on the superblackhawk a little bit, a little trim job with a razor blabe will allow them to cycle in the SBH. Waiting to go to the range to try them. I used load data for hornady 265 gr flat point bullet and backed off a full grain for the first loading with H-110.