Hi Carl,
Autocomp is designed primarily for compensated handgun (hence the name). Supposed to generate more gas? Remember a time no so long ago where powder was a tough find? I had a pound to fart around with but no pistol with compensator... used it anyway.
It worked fine except:
a) dirtiest powder I ever used. Used just enough to make power factor; and
b) widest velocity readings I ever recorded on the chronograph. It's up and down crazy like when with a new girlfriend...
An IPSC buddy experienced the very same thing.
Hoping this helps.




























