Originally Posted by Tikkamike
I am building a 338 Lapua and your thread caught my eye, I was hoping you would have more answers. Here is what I have been thinking. I plan on using a 350 grain Tripple shock with Federal 215 primers and a nice slow burning powder. Little side question. what scop do you have on your TRG and what distances are you shooting?
Do you mean a 250g TSX? ...with a G1 bc of .425, acc'd to Barnes?? Or a 225 TTSX with a Barnes derived G1 bc of .514. Often manufacturer bc numbers are derived at velocites of 3K and so the bc number is only good for that velocity and drops off substanially at lower velocities important to long range hunters due the distances bullets are traveling in a long range hunting sceneario.
G1 bc of the 300 SMK is (averaged) about .745. Potentially, quite a difference to the long range hunter from the Barnes bullets. Litz's experimentally derived data shows a G1 bc of .802 at 3K and above, .769 at 2.5K, .742 at 2K and .665 at 1.5K fps.
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