Is there some advantage time/money/performance to using cut down brass vs short colt/long colt?
When I first got my 627 I cut down some 38 special cases because 38 Short Colt was on Backorder from Starline. I had quite a few 38 Special cases with split necks (I have a hard time throwing stuff away) so I thought I could get a little more life out of them. I made a jig that made cutting them down pretty fast and easy. They worked OK, but there was some issue with bulging like others have said and once I got my Starline brass I stopped messing with the cut down cases. Definitely not worth the trouble if you can find Starline 38 Short Colt.