I've been looking for a SRH 454 cylinder for about a year. I screwed up a bid on gunbroker last spring and missed one and have'nt come across another one since.
Well, thanks to another member here on the forums I now have a 454 Cylinder for my Redhawk conversion, oh, it's still in this like new SRH
I've been researching this for quite some time and will update here as I do the swap out. I'm hoping to do this all myself and not have to have a smith do anything. The neutered SRH will find a home with someone wanting to do a 475 or 500 bigbore project. I'll probably keep the 45 Colt cylinder at least for a while until I'm satisfied.
Preliminary quick measurements show headspace within .001 on the two guns. Cylinders are the same length and distance from frame to barrel is the same as well. After talking to guys who have done this conversion, timing is right on as is bore alignment. Evidently Ruger uses the same specs for bolt notches, timing, etc. on the cylinders.
A .452 boolit pushes through the 454 cylinder so it's good to go. I wonder if this is because it's a newer Ruger or if it's because it's a 454. I had to ream the throats on the 45 Colt to .4525. They were at about .4515, the Redhawk is a couple years old.
Cylinder/star extractor assemblies will come off the cranes, 454 Cylinder will go back on the Redhawk. Cranes will stay with the proper frames. I'll then check cylinder gap and endshake and see where I end up. May have to shim it, we'll see. The Redhawk has about .005 endshake and that after it going back to Ruger last winter. The 454 is really tight. I haven't measured it yet.
I'm pretty excited about this. The 454 Redhawk will be a nice companion gun to the 454 Levergun.
Comments and tips are welcomed.