Re: Vectan Tubal powder
Thanks Artemis for the data.
I tried starting at 41gn Tu5000 (10% down on the 150gn load) with 154 Lapua Scenars in Lapua cases with fed210gm primers (at 2.82" for the magazine). Sooty necks and not great groups at 100m. Steadily increased the load and it came under 1" at 46.5grain, 0.8" at 47 grain. No pressure signs.
My Rem 700VS has a significant freebore, I can't load anything magazine length to touch the lands (except backwards) so like Weatherby's, pressures may be lower than a tight throated barrel. Will try 47.5 & 48 next assuming it will fit in case (close), carefully. Velocities were 45gn 2711fps, 45.5 2737, 46 2766, 46.5 2804, 47 2842. These all plot on a straight line, watching very carefully for sudden velocity increases and any pressure signs.
What's a realistic (in spec pressure wise) max velocity for 154 scenars in 308win?
Will try 155 A-max & 165 Sierra HPGK next.