Re: 4000MR
Fired a few rounds through the chrono at the end of the day, I literally had about 5 minutes before I had to take off. Anyway, here's a pic of the brass.
I will say that the sw ammo is very accurate... 1st round hits at 600, 925 and 1020. Targets were 6x6 plate at 600, steel bowling pins at 900 and 1020.
Definitely good stuff.
With at DA of around 10.5k, Atrag gives me this to get to 1020-
SW Ammo 190 = 24.9 moa
N560 190 = 21.2 moa
4000MR 190 = 20.9 moa
Chrono'd my handloads-
70gr N560 = 10rds, avg 3020, spread 40 (cyl powder)
68.5gr 4000mr = 10 rds, avg 3093 spread 20 (ball powder)
SW Ammo 190 = 10 rds, avg 2910 spread 36 ( unk )
I didn't shoot groups at distance, sorry, but I had about 10 things going on at once and I ran out of daylight. You can look at the brass for yourself, I definitely can see that my handloads are hot but they both are within an MOA in terms of vertical dispersion based on where they printed at 1020.
Wind is another matter... haha
NOW;
I will definitely back off about 1.5 grains and go do a real test, however I'm biased towards 4000MR since my progressive throws it well and it seems to give a little more fps vs N560.
No popped primers, slow bolt lift ( by slow I mean light drag, not like two-hands slow) on all the N560 rds and about 60% of the 4000MR. SW Ammo had 3 or 4 slow lifts out of 60 rds fired, temps were 32 deg to 75deg throughout the day.
Again; this is not a real test, obviously, so take it for what it's worth.
My opinion- I like SW Ammo and this 4000MR powder.
From left to right
Win brass and CCI 250 LRM primers
SW Ammo, 4000MR, N560