I finally got to shoot the A. Hollis 500/450 hammergun this weekend. Here is what happened with Hawk 480 grain bullets and 85 grains of R15.

1: Thankfully it did not blow-up or exhibit any dangerous flaws.

2: Fire formed the cases to a different shape, go figure.

3: Stretched the base of the case quite a bit (head space)

4: Got stuck case every time. I had to tap them out with a cleaning rod.

What could be possibly causing the stuck case?

Don’t ask me how it shot – I just closed my eyes and yanked the trigger!