Decreased drop and drift I wouldn't think would make it any easier to put the bullet in the right place. What difference does it make how much a bullet may drop or drift if your a well practiced long range shooter. Judging drop and drift for a guy that's doing it in the first place should be second nature. Is there really much difference between knowing you have to hold over 18" and 2'? Your supposed to be a long range shooter! Maybe if you can't do that, you shouldn't be shooting long range in the first place! With the only rifle I have that I have shot long range with, over 300yds, I had a drop sheet taped to the stock, all I had to do was look at it and readjust the reticule. Never did figure out how to judge wind! Then again I only fooled with it at paper target's! If you really know how to shoot long range I doubt drop or drift is gonna make a difference, you simply adjust for it. More important is really long range where, as I understand it, to remain accurate the bullet must nor drop below super sonic. New ball game there but if you understand that part them velocity makes a difference. So at what velocity does the bullet fall below super sonic? It's my opinion that shooting big game at those ranges has nothing to do with hunting and everything to do with shooting! Personally I would not attempt it!
The difference between my 6.5x06 and my 6.5x55 is no where as great as you might think. The 6.5x06 is faster but with either when a well placed bullet hit's, the deer dies fairly quickly. Same outcome! If your not a well practiced shooter in the first place, get out to a point where the sighting need's adjusted for drop and likely the outcome will still be the same, a miss or a wound. Velocity at some point will help only if your are accomplished enough to know how to use it!
A) not everyone hunts with a rangefinder.
B) Rangefinders are not perfect and neither is a persons use of a rangefinder.
C) a wind call under hunting conditions is A LOT different than at a range with wind flags set at specific locations and sighting shots allowed. The best wind callers in the world make one or two 2mph mistakes throughout the course of a match, and they have a lot more to go on than a hunter in the field.
D) a 6.5x55 is incredibly close to a 6.5-06. It’s got 10-11% less powder capacity, but because it’s nearing the limits of a 6.5mm bore the difference in muzzle velocity, particularly with normal hunting barrel lengths, is minimal at best. Compared to a 6.5CM on the other hand a 6.5-06 is usually capable of about 400fps more, and that is quite significant.
E) just staying supersonic is not enough for all bullets. A lot of the tougher bullets used on big game do best above 2400fps.
I’d have to reference my dope chart and can’t at the moment, but my current 6.5 is roughly 2” high at its peak(somewhere around 170yds) and 19” low at 400yds. That takes out an awful lot need to have things perfect in the field. You can come fairly close to that with a 6.5x55, but not with a 6.5CM. The last four MD I shot were at roughly 175, 380, 300, and 300. I aimed roughly 10” over on the 380. I killed my first elk under some less than ideal circumstances and took a shot I probably should not have taken. After doing some math, I’m fairly confident that I would not have been able to hit the animal with the 30-06 I’d planned to use. I had switched to the 6.5 due to inclement weather as my 30-06 is in a wood stock.
I’m not saying that a 6.5CM won’t kill and kill well. I’m saying that to think that a 6.5-06 over no advantages is incorrect.
I’m not an expert long range shooter. I grew up shooting a benchrest club, won some hunter class benchrest matches, and dabbled in F-Class. I had a few shoots with very acceptable results, but never won a match. There were times my equipment disadvantages were likely responsible for the difference between 1st or 2nd place and 6th or 7th, and there were times when my skill and experience was wholly to blame. Hunting and competitive shooting are very different, and due the unavoidable imperfections of range finding, angle calculation, and wind estimation, decreased drop and drift do have value to a hunter even in the 300-500yd range.
Edit: Checked my dope sheet
140gr Elite
150yds +2.0”
400yds. -13”
450yds. -19.5”
500yds. -27.5”