SBR Cartridge Recommendation

And Barnes has new 6mm ARC loads, including one with a 6mm ARC specific bullet.

 
Does anyone have a picture of a bushed bolt face? I'm actually wondering why someone doesn't make these bushings and sell them. Seems like it would be a fairly simple vise/press in. It just has to hold the case rim centered and it should have a notch for the extractor, no?
 
6ARC, in the process of working up loads with the 70HH in my 20" Howa Mini, 3200fps should be where it ends up.
 
If you want to swap the whole bolt body out for a .445 bolt face you can purchase one from PR Precision. There quite a few folks on here that have purchased bolt bodies or bottom metal and I haven’t seen any negative feedback. I purchased a left handed 223 bolt body and it was a smooth transaction but didn’t end up using as I got in on the first UM left handed order at the same time. Note, prices are in CAD.

 
I’ve been wanting to do a 12.5” 22ARC bolt gun. Based on what I’ve seen with my other short barrel arc setups. You should be able to run an 80gr eldm at 2775-2825fps with a stout load of cfe223 or lever.
Factory black 75eldm should run 2600-2650fps, factory 80eldx at 2550-2600, factory’s 88s at 2450-2500, factory’s 62s at 2800-2850

And it’s been a few years but pretty sure there’s a guy on SH that runs a 12” 6cm with 105vlds at 2600fps with handloads
 
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