Proof PXT + 105 Berger Hybrids
Decided to do a ladder test with this 18 in PXT. I'm sitting on a boat load of Leverevolution which has served me well in speed and accuracy but I can't seem to get single digit SD's like I've seen others get. Once I reached 29.8gr I stopped the test and used the 30.1 in my 6arc MPA bolt with a heavy comp proof. All 5 shot groups (yeah not the best sample size but I'm tired of load development)
New Hornady brass that I put through an expander mandrel, followed by my Hornady case trimmer that puts a chamfer and deburr on them without trimming them. I then run them through a reddingn FL sizing die only to size the necks with a .267 bushing which should give me .004 neck tension. Using CCI 450 Magnum primers loaded to a COAL of 2.26in
Build List tip to butt
PTR Vent 1 (it's hearing safe all day long with this can)
PXT 18in with SA arms adj gas block set to full gas (haven't messed w/it)
CMT HDM 17 in rail with ARCA
JP enhanced bolt group with a LMT F/A carrier
SOLGW stripped upper (thermal fit tight)
Vortex Gen 3 4-24x
Radian lower with Trigger Tech Diamond AR10 trigger
A5-H0 & Geissele Super 42
ERGO flat top tactical deluxe grip
The barrel still hasn't crossed over 200 rounds yet but I'm pretty happy with the 29.2 load. Will eventually pick up some 107smk and 108 or 109 bergers. It also seems to shoot my Hornady 108gr handloads at the same charge fairly well.