ARC Coup de Grace Builds

MxTexas said:

I have a ton of H4350 and I'm trying to load the 109 Berger slow at around 2750fps out of a 22in barrel. My concern was not having enough case fill in order to run them at 2750. But looking at your data with 37.3g and 2833, I think I will be okay to get 2750. Are you at full case capacity with 37.3?

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I don’t think you will have a capacity problem using Alpha OCD brass trying to achieve that velocity. I would run a ladder test in .2-.3 increments checking for pressure signs along the way. You’ll probably end up around my powder charge? I was going to do some further bench side loading w/ my LE Wilson in line seating die but it was leaving a pressure ring around the nose of the bullet, I had planned on testing more velocities using my favorite “jump” value. I was planning on going up to 38.3 gr. Let us know how it works out

Just assembled my CDG .338 Lapua tonight, will have to get some photos to post.

CDG Action
Manners LRH with Micro Chassis
TT Special Two Stage
Hawkins Hunter Bottom Metal
OMR Carbon Barrel, 24"
SRS Ti Pro 4 Brake
SRS Hunter Rail

Rifle weighs 7lbs 15oz. Did have to remove a decent amount of material on the front of the micro chassis rear "pillar" to clear the trigger hanger. First impressions of the action is really good, it feeds smooth and the adjustable trigger hanger really lets you dial in the sear engagement. Excited to get it to the range.