Please forgive me if this is a tired old question, but I recently bought my first .44 mag and have started making loads for it. I am using H110 powder, Hornady 240-grain XTP bullet, Starline brass and Winchester WLP primers. I am referencing the Hornady manual and have them loaded in the 1300 fps range. I have the RCBS carbide three-die set. I carefully followed the instructions for all phases of the loading process. I made sure the brass was trimmed to a uniform length and produced a crimp that appears to be pretty good. It looks like the crimp on some factory ammo I have. The loads shot great with no apparent problems. The cartridges in the cylinder appeared to hold their bullet seating depth as I fired the gun. Will my RCBS seater/crimping die be sufficient or would it be a good idea to get a factory crimping die for this stage of the loading process? Any information is appreciated.