You will encounter problems unless you have a 6" slide. The lock up on t he barrels for the bushing or the bull barrel is on the .5" of the muzzle. You might be able to get some barrel company to extend that back.
Would that Theoretically still work? How would you get the bushing on/off? (unless you converted the gun to bull with a reverse plug...)
Besides, an extra inch would only marginally effect accuracy/fps. If I understand correctly, it's the increased sight radius, not barrel length, that make a long slide more accurate.
It works, I've seen several guns with 1" hanging out the front end. The bushing comes off the same way, you just have to slide it up the barrel to get it off. Your right about accuracy and I guess velocity would go up, but at what cost ($). Depends on if you think it looks cool and how much cool is worth to you.
Have a conventional 1911 45 ACP Gov't Model with a six-inch barrel on the original slide. Works fine. Accurate. Reliable.
With a variety of loads, picked up 64 fps velocity on the average. Whether the 7% velocity increase is worth it is up to the individual. Some folks add powder and pressure to accomplish the same thing.
I think the main advantage would be the extra weight of the longer slide to help slow down the slide as it cycles so the frame doesn't take as much pounding.
You have to go with a different slide, as well as a new barrel, when you go from 45 to 10mm. The breech face is machined differently for the smaller diameter cartridge.
So what if I want a little more snort from my 4" Commander sized 1911 and decide to stick a 6" barrel in it. Is that going to work? It'd sure be cat butt ugly but it'd gain me more than 100 fps vel.
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