Hi WildTo the bolded, sorry but that simply could not be more inaccurate. The higher the velocity, flatter shooting the round, the less you need accurate range estimations because the MPBR is much longer, the arc by definition much flatter, and thus for the novice shooter requires far less expertise and less advanced or specialized equipment to make those killing shots out to 400yds because holdovers a significantly reduced vs the slower traditional rounds like the 06.
As for energy, the equation is MV^2= Energy. Velocity is the far more important factor in the energy equation since it is squared.
At those ranges BC also means very little.
I just did a search and came up with an article on 7MAG point blank range. The author used a 150 Scirocco at 3117fps his window was a 6 inch kill zone, so 3 inches high at around 150 yds and 3 inches low at 300 yds. I will stand by my post that shooting this set up would require a decent hunter be able to distinguish 300, 350 or 400 yards by eye ball. At 400 yards it looks like your going to miss with this set up, at 350 you are looking to be low in the ribs if you connect with hair at all and at 300 you are at max point blank and would be better if you could call 300 yards and line the cross hairs a little higher in the ribs to get a good center punch. So yep I think even with the 7MAG your Mark 1 eye ball could do well to be calibrated for accurate distance estimation.
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