Dave,
What kind of load did you use with the Lil Gun? Do you crimp at the top cannelure or the bottom?
It's hard to find info on Lil Gun for this caliber. I shoot it in a revolver and I use 18.5gr with a Rem 180gr bullet...its not a max load (at least no pressure signs), but I get 1500+ out of an 8" barrel....
Thanks
Al