260 rem 130gr Berger AR OTM H4350 min/max charge?

[squib]

Curious what starting charge others have used in developing loads using h4350 & 130gr Berger AR for the 260rem?

Load will be for a 260rem 26" 1:8 bolt gun. It seems like most load around 43-44gr safely?

 

[padom]

Here's is my old 130 AR Hyrbid H4350 OCW target I show in my 26" Bartlein 1:8 260rem. My final load was 43g. I would start at 42.5 and work up.

 

[squib]

Thanks you sir, very helpful

 

[Niles Coyote]

Here is my 300y OCW from 2015, a 24" southern precision (aka bugholes on the hide) build with an obermeyer barrel. 43.7 is where I settled.

 

[squib]

Awesome, thanks

 

[squib]

Got to start my load development. 4 shot groups @100yds.
Found the High node I was looking for. Hopefully the load stays stable when temp rises.
26" barrel 1:8 COAL 2.850 Knocking on 3000 fps.

 

[Mtndog05]

I'm hoping to come close to your speeds with the betger 130's using imr4451. Did you stop for pressure or just achieve your goals? Seems like a lot of powder but? I loaded up 20 rounds starting at 42.1 to 44.5. maybe I'm being to cautious.

 

[squib]

I'm hoping to come close to your speeds with the betger 130's using imr4451. Did you stop for pressure or just achieve your goals? Seems like a lot of powder but? I loaded up 20 rounds starting at 42.1 to 44.5. maybe I'm being to cautious.

I loaded up to 45.5gr of H4350 without any pessure signs. I achieved my goal in the range of 45.1-45.3 and settled at 45.2.