Any 50 bmg loaders out there?
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OP
LC brass, double sized and trimmed
BMG 50
660 ball pulls double swagged, 750 Hornady Amax, Barnes 647 Tac X
CCI 35
AR50
Looking to compare velocity, accuracy, etc. with what I have.
BMG 50
660 ball pulls double swagged, 750 Hornady Amax, Barnes 647 Tac X
CCI 35
AR50
Looking to compare velocity, accuracy, etc. with what I have.
Last edited:
Also an AR50 here.
Best accuracy so far was
with LC brass, 750gr A-max projectiles, H50BMG powder and CCI 35 primers.
I started at 215gr and went up to 225gr.
(Max is 233gr)
220-222gr grouped the best.
Compared to factory A-max the POI was considerably lower but consistent.
This tells me I could go higher in the powder charge but I don't see the need.
Distance was 400+ yds
(I know, not a whole lot for a 50, but best I can do)
I haven't run them over a chrony, yet
Best accuracy so far was
with LC brass, 750gr A-max projectiles, H50BMG powder and CCI 35 primers.
I started at 215gr and went up to 225gr.
(Max is 233gr)
220-222gr grouped the best.
Compared to factory A-max the POI was considerably lower but consistent.
This tells me I could go higher in the powder charge but I don't see the need.
Distance was 400+ yds
(I know, not a whole lot for a 50, but best I can do)
I haven't run them over a chrony, yet
OP
90 rounds on rifle,
shooting off big ass bipod,
Chrono was moved out to 18'
LC once fired MG brass. Lee 50 press handle didn't make it. Ordered an RCBS 50 press. Finally used STP to lube per my gunsmith shooting partner.
Trimmed, flash holes and primer pockets uniformed.
CCI35 primers
50 BMG powder, also tried 872 and 867 but they were really all over the place. Don't trust them.
750 Amax 5.59 OAL
215 grains, 2420 fps
Witnessed 1/2" group at 200 on first loading, rest of the groups were 1" roughly. Still have work to do, not happy with velocity if I can maintain an 1" group in another node.
647 Barnes 5.24 OAL
235 grains, 2642 fps
1 1/2"-2" groups at 200
Going to work more on these also. Nice looking bullet
660 ball pulls at 5.43 OAL, I bought these swaged and then bought a die and swaged them again.
235 grains, 2657 fps
1 1/2-2 1/2" groups at 200
Factory 750 Amax, Fed A/E and PMC 660's haven't been chrono'd yet but shot about the same as the above 660 ball.
Accuracy is all in the barrel on these and I don't want to put a custom barrel on it. I lucked up on this barrel so far.
shooting off big ass bipod,
Chrono was moved out to 18'
LC once fired MG brass. Lee 50 press handle didn't make it. Ordered an RCBS 50 press. Finally used STP to lube per my gunsmith shooting partner.
Trimmed, flash holes and primer pockets uniformed.
CCI35 primers
50 BMG powder, also tried 872 and 867 but they were really all over the place. Don't trust them.
750 Amax 5.59 OAL
215 grains, 2420 fps
Witnessed 1/2" group at 200 on first loading, rest of the groups were 1" roughly. Still have work to do, not happy with velocity if I can maintain an 1" group in another node.
647 Barnes 5.24 OAL
235 grains, 2642 fps
1 1/2"-2" groups at 200
Going to work more on these also. Nice looking bullet
660 ball pulls at 5.43 OAL, I bought these swaged and then bought a die and swaged them again.
235 grains, 2657 fps
1 1/2-2 1/2" groups at 200
Factory 750 Amax, Fed A/E and PMC 660's haven't been chrono'd yet but shot about the same as the above 660 ball.
Accuracy is all in the barrel on these and I don't want to put a custom barrel on it. I lucked up on this barrel so far.