FPS?

[KenC]

If you are using Quick Load and modifying a Grendel load... it's not accurate. I know of three folks that have done this and spent hours scratching their heads try to figure out why the numbers did not jive. It just doesn't work very well.

The 30.5 loads were for a bolt gun, the 29.4 load is gas gun, and pretty much what I use for both 105 and 108 loads. I have used the 29.7 but got better accuracy with 29.4. I need to make correction on the FPS, the number should of been 2740 not 2840. I had to go look it up in my notes, it just didn't seem right with the high number. But the bolt gun is screaming in the 2900's pretty consistently. But it is a longer barrel at 22".

I resized some Starline Grendel cases and trimmed them to 1.480 and got 34gn of H2O, same with the Hornady ARC brass.

I am using the 6mm ARC already in quickload and just modifying the case capacity from what it there. I am going to work with it some more. I will punch your numbers of H2O in and see what I get. Will test my cases, again, after next round prep. Thanks for the info.