It locks up solid and the timing is good. The closest brass I have on hand is 32 Long but the diameter is about .013 too big so I made a sizing die that works stupid good (I wasn't expecting good results.) People use 32 Colt brass but it's hard to come by and I use what I have.
The first one I made I offset drilled and reamed the back of the case for a 22 ramset and it worked fine, but you had to index the cartridge in the cylinder. By chance I was at Lowes yesterday for the honeydoo list and walked by the isle with the ramsets. They have 27 caliber
I probably should have grabbed the #3 ramsets and not the #4 because these things are hot. You can tell by the noise alone. Thankfully I've been using .310 roundballs for testing when it's supposed to use .316 heeled bullets. It probably would have blown up otherwise but it's good enough to mess around with.