I am thinking about ordering a $70 stainless steel 16" 7.62x39 barrel for an AR15 bench set up. Normally I would go longer for a bench rifle upper but the selection for inexpensive 7.62x39 barrels longer than 16-18 inches is very limited.
This guy tested some factory steel cased rounds out of a test barrel beginning at 24" of length and cut it down to 16.5". He only found about 100fps difference. Would those velocity spreads be much different with slower powder?
This guy tested some factory steel cased rounds out of a test barrel beginning at 24" of length and cut it down to 16.5". He only found about 100fps difference. Would those velocity spreads be much different with slower powder?