The peak pressure is always in the chambers, 1 to 1-1/2" from the standing breech. Therefore, the shorty chamber inserts would cover it. It would seem likely that pressure, from the chamber forward, would be less than a 12 ga. shell, fired in the same gun. Smaller gauge shells usually produce more pressure than 12 ga. but I don't think it would be a problem. The best performance would surely be from the full length tubes, IMNTBHO,
in spite of what the shorty makers claim.

> Jim Legg <