Shooters World Precision Powder

[LRRPF52]

Case is a 9x Lapua, GM205M, 123 gr Scenar at a COAL of 2.25" which is 0.02" off the lands. Chamber on the 22" JP barrel is tight. I usually max out 0.6-0.8 gr below everyone else for a given velocity for a combo. 2500 is where I'm comfortable with AR Comp and where the "node" is. High 2400s is where I max with H4895 and XBR, with both feeling a bit uncomfortable approaching 2500.

Hornady max for Varget is 28.9. I loaded up 15 rounds with 25.7 to 28.5 gr of SWP in 0.2 gr increments. 28.5 was just above the brass' neck shoulder junction on pouring and just below the junction with 10 taps on the bench. Yes it's compressed, but there isn't a crunch. I used different aiming points for the first, mid and last 5. With Magnetto strapped on, no group was under MOA and the last 4 made a ragged hole with velocities at:

28.1:2417;
28.3:2424;
28.5:2432.

So we’re looking at:

22” JP 6.5 Grendel barrel with tight chamber

123gr Scenar
2.250” COL
Shooter’s World Precision Powder

I checked AA data for Varget and you’re dead-on with that from a 24” barrel shooting the 123gr Scenar.

AA shows 2400fps with 28.5gr of Varget under 123gr Scenar and SMK.

That powder might do really well in 6mm AR I think.

Looks like a true precision powder in Grendel, albeit somewhat slow.