[NW_Dear_Hunter_44]

Hello, I am ready to start some loads for the 375 Raptor. I've seen some recommended loafs for the barns 235 grain Barns using Alliant 1200R. That powder along with 10X is often used/ mentioned. That seems like too fast of powders, but that's what they use. Anyone have any experience loading for the 375 Raptor please chime in.

Thanks

 

[NW_Dear_Hunter_44]

I forgot to mention this is for an AR 308 style rifle. X caliber 18" barrel
Thanks

 

[bpair]

Did you ever start load development for the Raptor? I have a new 16” X Caliber barrel, Re 10x, Speer 235s and 270s.

 

[NW_Dear_Hunter_44]

I did but I may need an adjustable gas block as it seems slightly overgassed. The stating load was 46.0 with The Barnes 235 gr TSX. COL 2.660, Alliant 1200R, went to 46.4 grains with once fired WW brass.
Shot well, 18" X barrel, brass was landing 1-2 O'clock. No swipe and primers looked good so it might be the dual extractors on the bolt as they were flying way...way... past where my LR308 standard bolt throws them! but stopped there for now.

Looks to be a real thumper!

Max load is supposed to be 48 grains.

This was my gun and your mileage may vary! Be safe and work your way up

J

 

[bpair]

Sounds good. Will let you know, I do have an adjustable block just from my experience with the 308 upper. The plan is to get it lined up to thump things HARD. Thanks for the reply.

 

[NW_Dear_Hunter_44]

Anytime,
And it will definitely thump!
I'd like to try some Sierra 250 grain Game Kings too.

Have fun
J