204 ruger ideal length and twist for ar barrel?
Posted: Wed Mar 21, 2018 6:03 pm
hi all! ive been reading posts on and off for a few days trying to find an answer but nothing difinitive yet. sorry in advance if this does end up being a "clone post"
to start, i do not reload and would prefer to shoot 40 grain poly tip bullets. i do not have a need to shoot beyond 600 yards and will use this on coyotes and smaller game at comfortable ranges, mostly on fox. i intend to do a side charging upper but have been eyeing up WOA 20" with 1:10 twist. with that in mind i am wondering how much insight everyone has into barrel length and twist for an AR upper. i want to keep between 16" and 20". the shorter the better but do not want to throw lead downrange without burning all the powder before the muzzle. losing velocity with a shorter barrel doesnt bother me since the 204 is so fast anyways, but not getting the most out of the powder behind the bullet does.
i have read that at 18 and shorter muzzle blast gets pretty fierce, is this unburnt powder?
is it true the shorter you go, the faster the twist should be for heavier bullets?
how short can i effectively go before it start negatively affecting performance?
what barrel twist would be best/very well suited for the 40 grain bullets in a 16-20"? apparently there is bad luck with 1:12 twist and hornady v-max
thanks everyone in advance
to start, i do not reload and would prefer to shoot 40 grain poly tip bullets. i do not have a need to shoot beyond 600 yards and will use this on coyotes and smaller game at comfortable ranges, mostly on fox. i intend to do a side charging upper but have been eyeing up WOA 20" with 1:10 twist. with that in mind i am wondering how much insight everyone has into barrel length and twist for an AR upper. i want to keep between 16" and 20". the shorter the better but do not want to throw lead downrange without burning all the powder before the muzzle. losing velocity with a shorter barrel doesnt bother me since the 204 is so fast anyways, but not getting the most out of the powder behind the bullet does.
i have read that at 18 and shorter muzzle blast gets pretty fierce, is this unburnt powder?
is it true the shorter you go, the faster the twist should be for heavier bullets?
how short can i effectively go before it start negatively affecting performance?
what barrel twist would be best/very well suited for the 40 grain bullets in a 16-20"? apparently there is bad luck with 1:12 twist and hornady v-max
thanks everyone in advance