280AI recommendation?

[D_]

Picked up Cooper Excaliber from Prophet River.

Looking for recommended load from those who have rifle. 24" 1-10 twist.

Thinking 140gn Nosler bst and hopefully Varget as that's what everything else is right now for rifle. May go 4831 but we'll see.

140 or 150? The bc is a little better with 150.

Thanks

 

[Kevan]

H4831 SC works well in mine with either 140 or 150 gr. bullets.

 

[stubblejumper]

My Coopers prefer R-22 behind the 140gr TTSX.They are almost as accurate with IMR4831.

 

[Ganderite]

Varget would be kinda fast. i would not use anything slower than 4350.

 

[drummerboy73]

I use imr 4831 with 140 gr tsx. works very well.

 

[Kevan]

RL19 might seem a bit fast, but I did get some impressive groups when fireforming with it. As for the powders suggested by other posters, they all work very well, and I don't think you would be disappointed in trying any of them.