07-21-2020, 01:56 AM
Loaded up some 80 eldm's for the bolt gun over Varget and R16, both light loads just to get a few more rnds on barrel .
Only had time for 12 rnds before dark.... all 3 shot groups were under 1/2" with best at .34".
Varget loads was 3011 fps ,R16 was at 3035 fps .
Primers and case expansion #'s show plenty of room to increase powder charges. R16 fills the case up pretty good , I know i can increase charge weight but not sure if will have enough room for top velocities with 80's.
I obtained little over 3000 fps with 88's/R16 in 7 twist AR but dont know if if the 8 twist will stabilize the 88's.
I messed up really..... should have run the 8 twist on AR as the 80's are optimumn at 2.30-2.31 which will easily work from SS AR mags without notching mag.
The 88's need to be at 2.39 for bearing surface to be above neck /shoulder junction which would work better in the Bolt gun.
Will probably order another 7 twist blank for 88's in bolt gun.
But happy with accuracy of all 3 barrels and expect all to get better with more rounds downrange .
Hoping to get 80's to 3150+ from bolt gun...we shall see.
Only had time for 12 rnds before dark.... all 3 shot groups were under 1/2" with best at .34".
Varget loads was 3011 fps ,R16 was at 3035 fps .
Primers and case expansion #'s show plenty of room to increase powder charges. R16 fills the case up pretty good , I know i can increase charge weight but not sure if will have enough room for top velocities with 80's.
I obtained little over 3000 fps with 88's/R16 in 7 twist AR but dont know if if the 8 twist will stabilize the 88's.
I messed up really..... should have run the 8 twist on AR as the 80's are optimumn at 2.30-2.31 which will easily work from SS AR mags without notching mag.
The 88's need to be at 2.39 for bearing surface to be above neck /shoulder junction which would work better in the Bolt gun.
Will probably order another 7 twist blank for 88's in bolt gun.
But happy with accuracy of all 3 barrels and expect all to get better with more rounds downrange .
Hoping to get 80's to 3150+ from bolt gun...we shall see.