Possibly adaptable to a 2.5" case. I had more than 8 lbs of SR 4756 and none of the powders I normally use in this gauge so I gave it a try. I use IMR load data for AA case(old style). Recoil is very light as compared to faster powders. Down side is that it's dirty. I let a recoil sensitive friend try them and now that is all he loads. The dirty load would not be good for an auto but in a break open gun it's no problem.