Originally Posted by 10xtacout
168's are working 150's are no good! Stay with the jump they prefer that over the lans! 3.293- 3.298 oacl.They do better slower. Best group h 4831sc 63.3grns next best Magnum 68.0grns chrono 2863fps average. Nosler Custom brass. Fed GM215. Rifle7MM NoslerTG 48 custom.Nosler Accubond LR's 168's Doing recovery next week. (150's lost over 2/3 weight! Not good!!!(
Thanks 10!! I started some ladder testing on the weekend, saw right away as you point out that they like the slower speeds. I was only using the RL19, thats all I have on the shelf in any quantity. Very preliminary, but coming out of my custom at just under 2800 fps I had some group at < @ 1" at 200 yds. Pretty good for the day. This was 59.5-60 gr RL19 out of 26" barrel on my custom Rocky Mountain Rifle.
I did get a good group out of my Savage LRH at 2940 fps average, @ 1" 61-61.5 gr RL19. But both the RMR and the Sendero liked <2800 fps or less.
I have three loads made to try at next trip to range:
59.8 gr RL19
60.3 gr RL19
61.3 gr RL19
As estimates of the best performers in my three different 7 MM rifles.
Had to shortcut the ladder test process due to constrained powder supply, having to rely a little more on luck for this development than I would like.
But even with a few leftovers from ladder test I had two rifles group 3"-4" at 400 yds, there aren't many elk within that distance that won't be nervous.
More next weekend! Thank you for your insight.
Forgot: these were with new winchester brass, CCI 220 Mag Primers, and on a lead sled, as you probably guessed! My RMR is chambered for the HSM Berger VLD factory ammo, so COAL is 3.3340 and I loaded these all to this length. Once I get powder dialed in I am going to try seating a little deeper as per 10Xtacout findings above.