[sjlevy3]

Hornady seating die with no crimp. The sizing die is a standard RCBS (not small base). As a side note, I’ve loaded lots of these 75gr 3GH bullets with Ramshot Tac, and still believe Tac is a bit too fast for bullets of this weight. I see occasional ejector swipes with moderate loads even on brass like LC. I’ll probably stick with CFE-223 from now on. The current rifle is a Ruger 16″ AR-556 MPR (mid-length gas system).

[sjlevy3]

From the range a few weeks ago, I got 2756 FPS with 24.3 gr Ramshot TAC, Win #41 annealed (white box) primers, 2.255″ OAL, and of course the 75gr 3GH. This is from a 16″ 1:8 twist Ruger MPR. Note the range has a large, thick baffle about 10 feet from the shooting bench, and we shoot under the baffle. The chrono really didn’t like that and we only got the one good data point. Still, 2750 is faster than I was expecting. No real pressure signs on the PPU brass. Eventually I’ll do some accuracy shooting at 100 yards with a 3x optic.

[sjlevy3]

Rifle is a 1:8 AR-15 with 18″ barrel and rifle length gas system. Springco blue spring and JP bolt are the only modifications. 3x microprism optic was used for all shooting. Shots were from a bench, but without a formal benchrest or sandbags of any sort. I had a carpet-covered wood block on the front and nothing on the back.
Powder: CFE-223 @ 25.2 grains
OAL: 2.255″
Primers: Win #41
Brass: LC and RP were both used.

Without a real rest or even sand bags (as noted above), groups were 1.5″ at 100 yards. That’s with a variable wind of 5-10 mph from L to R. I have no doubt less than 1″ was possible.

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