Maybe the twist is the culprit. Did a 16" rifle, got a bbl from pacnor,,one of the techs told me that the 6.5 twist is what he used. Worked for me.
In talking to the Sales lady she told me that they could do a 4" twist (Yes 4"). I inquired what was the story on that and was told that is was a special order by the Government. She had no idea as to the use.
Can't get that thought out of my mind,,, that would stabilize a 30 cal welding rod! Ought to work in a short bbl. FWIW
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