Sierra 107gr HPBT, what powder?

[PA452]

Picked up a box of Sierra 107gr HPBT. I'm using these in a newly rebarreled (never fired yet) bolt action Grendel with an 18", 1:8.5 twist barrel.

Can anyone recommend a powder to work with?

[Drifter]

8208

[seatleroadwr]

You might want to look at H335. It does not take up as much space as comparable powders. 29.5 grains gave an average of 2708 fps in my 22" barrel.

[Greyfox]

IMR 8208 XBR works for me at 200-300-600yd matches.

[ricsmall]

Chellie Wiles on this forum has reported fantastic results with H322 with the 108 scenar, so it should be a good one with the 107 as well.

[adamjp]

I've seen good velocities and low ES/SD numbers using ADI Benchmark 1 powder. This is not available in the USA, but N133 is very very similar.

[Tikka]

8208