Question ?
The 45 Raptor uses .458 Bullets and should not do well with the .452 Diameter bullets. (Required for the 45 long colt, the 454 Casull and the 460 S&W) Glad you have had good luck with the TC bullets, and the FTX in .458 Diameter, but I cant use any of the .458 bullets, so I use the Magnum pistol bullets in .452 diameter. The 250 ftx was available in .458 dia for rifles like the 45/70 but have become hard to find. The 450 Bushmaster uses 250 grain FTX's in .452 diameter also so I still have a source.
Optimum performance appears to be in the 300 to 325 grain range and accurate to distances farther than 200 yards Like the 200 grain Bullets that Hornady loads for the 460 pistol. Average velocity for the 300 grain in my rifle is 2500 ft/sec.
I had thought about the Raptor because it would be such an easy build, but the .458 bullets ruled out the use of the Colt, Casull and the 460 S&W that I had plenty of ammo and components for.
J E CUSTOM