1950 Target 45 with a 5-inch barrel and target stocks. One of eight shipped to H. H. Harris in Chicago in 1960 and one of nine known.
Bill
Bill

I don't know about the twist but there are some differences in the rifling of the 45ACP barrels and of the 14 45 Colts that were shipped around June 1959. The usual Pre-Model 25 45ACP barrel has 6 narrow grooves while the 45 Colt barrel utilizes 5 wide grooves.Jim,
Do you know what the twist is on the M25 .45 Colt?
Same as the M25 .45 ACP?
Excellent write up David.. Searched out the post because I just purchased one of the younger siblings S94XXX....
Yes Model 22. Never came with PC Magnas, only N frame PCs came on the model 58 IIRC.
I once owned a pre-26 but sold it after being disgusted at poor accuracy with lead .45 Auto Rim ammo. The rifling is designed for jacketed bullets, and I didn't want to fool with half moon clips.
If I had handloaded with hard-cast lead bullets in Auto-Rim cases, it might have done well. I've seen published loads for those with Keith bullets that'd make the 26 a very effective revolver.
Frankly, I think the M-1950 .44 Spcl. is a more versatile gun, and the bulk of a .44 Magnum isn't really a whole lot more, in the right holster.