And this is why plugging numbers into a ballistics calculator and then taking shots at game animals at distances one hasn’t verified on non-living targets is a fantastic way to miss or wound something! Thanks for sharing. Very interestingAll right, guys, I need a little more help. I loaded a fresh batch of 50 rounds and headed to the field to double check that I've got everything right before my mule deer hunt.
I started with my bc in the calculator set at .320 from my prior outing. I set up at 500 yards, and missed twice. This caused me a little concern, because this should have been dead on according to my last outing. I moved on to 200 yards to confirm zero and shot a .5 moa three shot group, so my zero is still good.
Next, I moved back out to 400 yards, with my bc still set at .320. I shot a .75” three shot group, dead on the bullseye. As a matter of fact, one shot hit right in the middle of the bullseye. Ok. This is better. Maybe it was my shooting at 500 earlier that was off.
Now I back up to 600 yards. My ballistic calculator, still set at .320, wants me to dial up 5.95 moa. I check the range again with my Sig kilo 2400 abs and it want me to hold 5.94 moa. Perfect. I dial up 6 moa and….miss. Maybe it was poor shooting mechanics, so I shoot again and miss. Hmmm. What’s going on? I’m dead on at 400 and shooting low at 600.
Just out of curiosity, I set the bc back to .230, which is what hammer advertises for this bullet. Now I needed to dial up 6.77 moa. So I dialed it up and shot these two shots…
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So, what I know is that at 400 yards, my bullet has a bc of .320. At 600 yards, the bc is .230. This is all holding velocity constant at 3635 FPS, of course. So how do I account for this in a hunting situation? Is there a way to make a ballistics calculator account for these differing bc values? I’m sure there won’t be enough time to range a deer, adjust the calculator, dial up, and then shoot.
Exactly why I’m working on verifying everything. I don’t want to be staring at a 180” deer wondering if the calculator is right or not.And this is why plugging numbers into a ballistics calculator and then taking shots at game animals at distances one hasn’t verified on non-living targets is a fantastic way to miss or wound something! Thanks for sharing. Very interesting