04-09-2022, 02:29 AM
(04-07-2022, 09:17 AM)grayfox Wrote: Hey Grey quick side question, I’ll likely be buying the unitah 6arc 22”I have the .223 version was wondering how you like the 6 offering? Good info on the jump thank you for that.
I shoot 95 berger's. And echo Dino on not using the 400.
What MV were you seeing, the savage, that's an 18" barrel right?
But another couple things...
1 is your coal. Even for the vld 2.250 may be too far into the lands, asking for pressure spikes when the bullet cannot move enough at the start; did you check available oal with something like the hornady oal gauge? Plan on 30 thou as a min jump for the 6Arc.
2d is the 31 could definitely be too hot more than likely for your barrel. I'm settling in around 30 grs with my 22" uintah bolt gun.
Like its bigger brother the grendel, 6Arc is not a hot rod.
Try working up using cci41's, 450's or fed 205AR's. Also for the ladder use 1% case volume increments, like 0.3 gr - a 0.5 or 1.0 delta is too rough to be able to get good info on finding a node.