My son just got his new rifle, a 454 casull puma, the store did not have any 454 shells so they sent 2 boxes of 45 long colt (hornady 244 grain cowboy action) on the box is says 700 fps muzzle vel. we are in the bush right now and all my reloading books are at home. I need to know on the 45 long colt are these mild loads? how fast can you push the 45 long colt? Ive heard the 45 can be loaded hotter than the 44 mag is that true? These bullets are not very accurate in the Puma (hard to keep on a 6 inch paper plate at 25 yrds) Is the Puma very accurate? He got the gun to take horse wrangling/guideing this fall but is not so sure now, with these bullets at least. How about the 454 with factory loads, what fps does it get? I know one guy who has one and he said its a real thumper? Im pretty good with rifle cal. but am pretty clueless when it comes to handgun cartridges. He also has a ruger old army BP handgun in 45 cal. and is thinking of getting a centerfire cylinder any info on those would be appreciated. Thanks in advance!