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7mm SAW
- Thread starter Temper
- Start date
I was shooting the 150 ELDX out of a 22” Ruger American Predator 7mm-08 for my hunting load.
Alpha Brass
W-760- ~47 grains
Hornady 150 ELDX-
CCI LRP
2825 fps.
Any interest I'm Remage barrels ? Switching actions to prefit barrels
Preffered barrel blanks
24" 8 twist medium palma bead blasted finish. 5/8x24 muzzle
Shooting 162gr at 2700 fps Shot 30 rounds
26" 25 saw 1:7.5 twist heavy palma fired 10 rounds same load
23" 25 saw 1:7.5 twist spiral fluted medium palma 5/8x24
Running 134gr eldm at 2860 fps Fired around 20 rounds.
Preffered barrel blanks
24" 8 twist medium palma bead blasted finish. 5/8x24 muzzle
Shooting 162gr at 2700 fps Shot 30 rounds
26" 25 saw 1:7.5 twist heavy palma fired 10 rounds same load
23" 25 saw 1:7.5 twist spiral fluted medium palma 5/8x24
Running 134gr eldm at 2860 fps Fired around 20 rounds.
First shots on my Solus/CarbonSix 20" 7 SAW (Type 1) build this afternoon... I went Type 1 so with Berger 175's it would still fit in the MDT mags, and have very little jump, seating them 0.006" off the lands at 2.200" base to ogive, and the fit right inside the mag and feed with no issues.
Barrel needed serious break-in, and groups were so unimpressive that I didn't even walk down to take pictures or measure them in Ballistic-X. We're talking like 1.5 MOA bad... But, it was as brand new barrel, with zero break-in, brand new brass, random-ass load data (guess), etc... I was basically just trying to get the scope zero'd, a little break-in on the barrel to settle it in, and find my max load. Accomplished. SD's started dropping into single digits around shot 16-20, and kept dropping into the next group of 5 (shots 20-25). I only load up 25 at a time (5 of each charge) during load development.
Also, with virgin Alpha brass, I noticed that everything above 47gr was a compressed load. Hopefully the once-fired will expand enough to give me that extra room needed so it won't be such a pain in the ass to get 47-48gr of StaBall 6.5 in there. Measured a brand new piece compared to a 1x fired piece from today, and the fired piece the length grew by 0.008", the width at the shoulder/wall junction grew 0.006", and the base above the groove grew 0.002".
Barrel needed serious break-in, and groups were so unimpressive that I didn't even walk down to take pictures or measure them in Ballistic-X. We're talking like 1.5 MOA bad... But, it was as brand new barrel, with zero break-in, brand new brass, random-ass load data (guess), etc... I was basically just trying to get the scope zero'd, a little break-in on the barrel to settle it in, and find my max load. Accomplished. SD's started dropping into single digits around shot 16-20, and kept dropping into the next group of 5 (shots 20-25). I only load up 25 at a time (5 of each charge) during load development.
Also, with virgin Alpha brass, I noticed that everything above 47gr was a compressed load. Hopefully the once-fired will expand enough to give me that extra room needed so it won't be such a pain in the ass to get 47-48gr of StaBall 6.5 in there. Measured a brand new piece compared to a 1x fired piece from today, and the fired piece the length grew by 0.008", the width at the shoulder/wall junction grew 0.006", and the base above the groove grew 0.002".
