Shooting my Mod 70 270WSM . 65.5grs of IMR 7828 these bullets shot very poorly. Also shooting 110 V-max 68.5grs of RE#19 these loads shot fantastic. Any one have experience with Hornady's SST line of bullets.
I shoot the 140 sst and magpro, never found an accurate load yet.
I shoot the 110 vmax and varget, always very accurate.
I am going to try the 135 seirra matchkings again, this time with some H4350 and Magpro.
I am starting to reach my end with Magpro, I get great velocities, but even backing off I never have gotten a really accurate load with it, in the 270wsm, 25-06, or 7mmRem.
Mag Pro : That is very interesting I got high velocities with it in my 6x284 but marginal accuracy. Poor accuracy with it in my 270WSM shooting the 130 SST. Dang if I could only shoot in my back yard I could spend more time testing.
I know this is an old post but here is what I have found.
130 sst
use powders
RL19 61.5 grains
IMR4350 60.0 gr
H4831 62.9 gr
AA3100 65.6 gr
WMR 69.1 gr
N165 67.9 gr
these are max loads
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Barns triple shock 130 gr RL22 68.5 GR 3319 FPS .3 GROUP
Hornady sp interlock 130 gr IMR7828 70.0 gr 3322 fps .4 group