Finally found good loads!
Grendel 123 ELD-M .581
Mossberg MVP 70 RDF .580
SDMR/SPR 77 SMK .875
All shots at 100 yards using 2000MR powder
83 degrees and 10,000% humidity
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Finally found good loads!
Grendel 123 ELD-M .581
Mossberg MVP 70 RDF .580
SDMR/SPR 77 SMK .875
All shots at 100 yards using 2000MR powder
83 degrees and 10,000% humidity
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Outstanding. Have you been able to retest them to make sure they are consistent. What kind of velocities are you getting with all of those loads?
JTD
Something happened with the Grendel, went to the range and got my dope to 600 yards with the rest I had loaded, loaded up 50 more after sending 5 down at 600 and not hitting steel dropped back to 300 and was hitting 5 minutes low, the only difference between the days was 10 degrees cooler and old brass vs newer brass, 4 reloads old brass and 1 reload newer brass.
Every else was the same, same power lot, 40 of the 50 round were from the same box of bullets.
Haven't had the chance to check velocity on any of them yet
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That sucks about the Grendel. Ive definitely had loads that acted up like that. Back to the drawing board. Glad the others behaved. If you ever get a chance to chrono those loads, let me know.
JTD
I have a long thanksgiving weekend, hopefully I can sneak out to the range
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Finally remembered that I needed to chrono some loads and had enough time to do it today.
First picture is from a 20 inch barrel(DMR)
Second picture is from 18 barrel(SPR)
Temp was 35F
Date was 2/4/20
Still have room for improvement
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2” of barrel didn’t make much difference in velocity.
JTD
Not a whole lot
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