Good point, I will look into this. The idea was never to run real 460 Rowland ammo as this neccesatates recutting the chamber. I was more interested in being able to run 460 pressures as I have found out from Starline that their 45 super brass and 460 brass are the same strength. So one could just buy super brass and load it to 460 pressures (if the gun can handle it) and not have to recut chamber. If I allow myself to recut chamber then the 45 win mag becomes an option. The two issues as I see it arecrossfire said:The obvious question becomes, If the cylinder is long enough, why bother with the .460 Rowland? The .45 Win Mag will trounce the Rowland and do it with lower pressures and has more case volume to better handle heavier bullets. You'll also reduce the amount of "bullet jump" to the forcing cone.
I know they do Rowland conversions on the S&W 625 which is an "N" frame. I am not really interested in going that high in pressue. I am looking at 45 super loads which are around 25k-28k. Buffalo Bore makes some 45 super and 45 auto rim that run around 25k psi. It does make sense that if one is willing to recut cylinder for a longer case, one can get higher velocities at lower pressures. Higher velocity is what we are after in the first place. Chamber pressure is the by product. The question becomes what happens when you try to shoot regular 45 acp with moon clips in a cylinder that has been cut for 45 win mag.Just an opinion, but I seriously doubt the Tracker has enough strength to handle the Ruger and Contender only 32 kpsi .45 Colt loads (someone would have done it) and the Rowland operates at a much higher pressure level than that. Those loads aren't safe in a S&W N-frame, and the S&W is larger than the Tracker. Five rounds vs six don't mean much when the cylinder is almost .200" smaller in diameter. (1.53" vs. 1.71") At least the .45 Win Mag has some loads that operate at 28 kpsi which is more plausable.
interesting?Don't ask me how a cylinder (the S&W N-frame) that can't handle .45 Colt .32 kpsi loads can handle a 40 kpsi load, I don't have an answer. Neither has anyone that I've ever asked...Including Clark Custom.
Are we talking about the Tracker coming in .41 mag and the conversion being done to the .45 acp of the same model? Thanks!Shooter McGavin said:I talked to Clark at Clark Custom guns. He said if the revolver is chmbered in 41 mag, then no problem firing 460 rowland through it. He wasn't exactly familiar with the Tracker so I explained it is a medium frame revolver. He said if its a revolver and chambered in 41 mag it can handle 460 afte having the cylinder chamber recut to accept the 460 case. For what its worth.