05-29-2015, 07:49 AM
Regardless, you won't see significant increases. Maybe.....5%. Not 20%. At best, 10%. Not more, no way. Not enough powder capacity, and in most cases, not enough barrel length to slow powder burn speed enough to allow a significantly slower powder and thus longer acceleration time. I have one of the few 28" barrels, and I have a hard time being 200 FPS faster with it than my 16", under best circumstances with both, using the best loads shooting same weights. You are simply not going to find some magical barrel/throat combination that will override the limitations of the powder capacity.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt