Strelok Pro and ACOG 3.5x scopes; is this right?
So, I set this up on Strelok with the following: M193 profile; changed MV to 3074 fps (which I believe is more accurate than the Strelok MV); 1/7" twist rate; 2.86" height above bore; sighted at 50 yards using an ACOG TA11-J (crosshair). The pic below shows the predicted points of aim/impact. Note that the BDC system appears to be very close to the drop rate of the bullet, but is off by 100 yards (e.g., the BDC mark for a 400 meter impact corresponds to a 501 yard range).
I have played around with this, and determined that the BDC was calculated for use with heavier bullets than M193 using slower velocities. I works for certain match cartridges (like Federal Gold Match, and heavier). Is this "off by one" correspondence correct? Is Strelok off, or does the software predict accurately what will happen?
'That whole effort was held together by sweat, shame, and a tiny bit of pride.' -- Son of Commander Paisley
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