I’m not gonna lie, this went over my head…can you point me to a video or article that explains what you’re trying to explain? I’m very appreciative of you taking the time to walk me through it, but I’m a little slow sometimes
No worries. I dont have a video, so Ill try to explain. Caveat, this is my experience. Others will disagree. I only bring it up to suggest practicing at range in field situations to really decide for yourself. You have to practice with ALL of these.
3 ways of shooting being discussed to reach to your stated goal of 500 yards. Mpbr (max. point blank range), reticle holdovers, and dialing. Because even a 270 or prc drops around 4 feet at 500 yards so “kentucky windage” would require holding well off of the target itself, so imo isn't a reliable 4th choice.
Mpbr means you sight in x-amount high at 100 yards, the equivalent of a 200, 250, 300 or even 350 yard zero. The idea is that you “build in” an “acceptable amount” of extra elevation at close range which will cause you to hit high, so that past your zero you have an acceptable amount of drop and hit a little low, and you can aim dead-on at any range out to a certain range. I use this minimally and it works well. Some people stretch this very far though—ex a 300 or 350 yard zero. There is so much built-in error at close range (about 4-5 inches on my 270) that when you stack that built in error on top of the other sources of error such as the guns mechanical precision, your wobble shooting in the field, a less than perfect range, etc, I had a significant decrease in hit rate at normal ranges. Some people use a little kentucky windage in combo with this as well. This method for sure works, I just could not hit well enough really stretching it so I personally dont like it. Imo this is a great tool done minimally, its questionable really pushing it without a LOT of practice. Also, I mostly deer hunt, an elk is a much bigger target that might skew the math toward this for some people.
Holdovers are using reticle marks to be more precise with your elevation hold. This eliminates the kentucky windage element, but its very dependent on the exact reticle, and you still have to count reticle marks and estimate in between them. Especially using quick drops (a short rule of thumb to estimate Mil holds based on yardage) this can be fast, where it broke down for me was 1) finding the right balance of reticle marks for precision, that didnt have me counting too high and losing track of my count or the animal, and 2) adjusting and having to re-count reticle marks for a follow up shot or a new yardage. Basically I found that using the reticles I had access to, this was not precise enough at longer ranges if I used a reticle simple enough to not make lots of mistakes in counting hashes under pressure (again, elk vs deer might matter for some people). I also found in the long run it was no faster than dialing once past moderate range.
Dialing is easier to understand. Game is at 460 yards, you dial 2.6mils, hold center of reticle and shoot. Its inarguably the most precise. For me it hasnt been much/any slower where it matters. You have the added benefit of having a reference along the horizontal crosshair to hold wind as well.
As far as using a dialing scope…if you want a mpbr zero, you just dial .4mils and walk around that way. You have your ability to use a mpbr for anything x-range and less, and then for anything farther you just dial whatever you would have dialed. If you want to use a holdover, just dont dial, leave the scope on zero and use the reticle. Or dial. To me it makes perfect sense to mix these as it makes sense, but makes no sense to limit yourself to only one way of doing things. But if you are relying heavily on either holdovers or a mpbr strategy a flatter trajectory will help a little to reduce the error.