[rock185]

I did this more than once back in the day. Every factory commercial Colt barrel bushing I tried fit every Colt Government and Gold Cup S70 barrel and slide loosely. The several S70 barrels I measured were all in the range of .579"-.580". Though it might appear that way, the collet bushing S70 barrels are not oversized near the muzzle. The .579"-580" muzzle area tapers back to approx. .567" to allow the barrel to move down at the breech and unlock from the slide.

So yes, within my experience it is a direct swap, if using a standard Colt solid bushing. The downside, is that accuracy may drop off a bit as the collet bushings functioned like a fitted bushing in returning the muzzle to the same exact position every time. But ease of disassembly/assembly may outweigh this consideration...