Three (3) 4 to 5 shot groups at 100 yards with -

150 grain Sierra, 54 grains RL-19, GM210M primers, SPEER nickeled brass and OAL 3.290".

Speed only 2600 fps but the groups went into a half-dollar (bipod) and maybe 3" lateral spread (short sticks). Haven't even tried it on sandbags.

Worked nicely with Scirocco's so I tried the Sierra's.

My petload consists of :
Sierra 160 GK (or HP) / N 160 / 56.0 (NB : my Sauer 202 insists on CCI 250 primer).