Here's an old article many of you have probably read about some guys shooting inside a warehouse:
Secrets of the Houston Warehouse
Here's a quote of what they discovered about barrel length: "But no bit of information was, Virgil believes, more valuable than a little advice Jim Gilmore passed along. Jim said a barrel MUST be 21 3/4” long for optimum accuracy. That precise length, he stated, sets up a vibration pattern that duplicates well from shot to shot. Virgil faithfully followed that advice on his guns."
Edit; Posted before I read LRPFF52 above ...
Jack
Secrets of the Houston Warehouse
Here's a quote of what they discovered about barrel length: "But no bit of information was, Virgil believes, more valuable than a little advice Jim Gilmore passed along. Jim said a barrel MUST be 21 3/4” long for optimum accuracy. That precise length, he stated, sets up a vibration pattern that duplicates well from shot to shot. Virgil faithfully followed that advice on his guns."
Edit; Posted before I read LRPFF52 above ...
Jack