chache
Member
i was thoroughly suprised by some results that i obtained today while testing a load.
i have been working up a load for my 16" barrel ar-15 using a barnes 50gn varmint grenade and reloader 10. the barnes book calls for max load of 22.2 grains with a velocity of 3202 f/s.
my load development has lead me to the most accurate load being 21.1 grains resulting in a 1/2in. group at 100yds. i anticipated this load would be somewhere in the 3000f/s neighborhood.
i was shocked to see my average velocity was only 2575 f/s with a ES of 44 and an SD of 17. at first glance these all seemed like good stats combined with a great group for an AR. i just didn't think the velocity would be that slow.
i know that shorter barrels results in lesser velocities, but this seems like alot. the barrel length in the book is 24".
what would be the best/smartest move to try and achieve more velocity from this round/gun? with a speed that slow, it seems unlikely that i will be able to reach out to longer distances with acceptable killing effect.
i have been working up a load for my 16" barrel ar-15 using a barnes 50gn varmint grenade and reloader 10. the barnes book calls for max load of 22.2 grains with a velocity of 3202 f/s.
my load development has lead me to the most accurate load being 21.1 grains resulting in a 1/2in. group at 100yds. i anticipated this load would be somewhere in the 3000f/s neighborhood.
i was shocked to see my average velocity was only 2575 f/s with a ES of 44 and an SD of 17. at first glance these all seemed like good stats combined with a great group for an AR. i just didn't think the velocity would be that slow.
i know that shorter barrels results in lesser velocities, but this seems like alot. the barrel length in the book is 24".
what would be the best/smartest move to try and achieve more velocity from this round/gun? with a speed that slow, it seems unlikely that i will be able to reach out to longer distances with acceptable killing effect.