Anyone using it?
I picked up a Lb of it yesterday to try out in my .280 loads, as I'm not happy with Rl-19 and 22 in mine. My rifle has a 24" barrel, and I can load the cartridges quite a bit longer than COAL, and I think that the 17 might be able to maximise the potential of this particular rifle.
I finally bought a chrony, and while out at the range yesterday, I was using max loads from the Nosler book, with both 19 and 22, and getting velocities more than 200 FPS less than published, while my factory loads where pretty much bang on published velocities.
Hmmmm. I'm thinking its my longer than standard COAL thats reducing my pressures.
Standard COAL is 3.330, while in my 160 loads, I can use a 3.385 COAL and be off the lands .030". The factory loads are quite a bit shorter than 3.330".