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Yeh to much sun is not good as is low light in the evening, my nephew got reading upwards of 3200 fps with 200 gr ELDX in his 300 WSM which we figured was wrong, that was in the low light of dusk,...

Yeh I haven't tried to get more speed may be one day. I mostly use 2209 for about the same speed. My rifle might be one of those slow models who knows.

In my Rem with a 24 inch barrel with the 95 gr Noslar BT I get 2962 fps average with 44.2 grs of SF