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That is not true. In the Northern hemisphere, the Coriolis effect will cause the bullet to always hit right of the target whether aiming north or south. Aiming due north the bullet will strike the same distance right as aiming due south hits right. In between due north or due south the correction is less right, but still always right. Unless you are shooting south of the equator, then the Coriolis effect is always left.
Yes, I agree about canting also changing the elevation ARC. My implied question is: is the elevation ARC correction caused by a canted scope greater than the spin drift correction created by canting? Your 1/2 MOA bullseye error is also a compromise and not accurate at all distances. So, which scope error compromise (canting or 1/2 MOA) causes the smallest error in windage and elevation?
No, shooting due east or due west, there is zero right Coriolis correction.
I disagree with this. Shooting West the target will move up and out from under the bullet flight causing impacts to be low. Shooting East the target is dropping and moving away causing the bullet to hit slightly high and to the right. I never worry about coriolis in a hunting rifle as it has little effect until you get out to extreme ranges. With updrafts, down drafts, and cross canyon winds, as well as aerodynamic jump, latitude, azmuth, time of flight and all of the other variables in any givin day I feel coriolis is the least important. Now for ELR guys shooting targets at 2k even 3k I'm sure it plays a major rule for that application. Hope this helps, Jason
Agree with the hitting high or low, I said zero "right" correction as he asked. He did not ask about elevation because he knew that answer already. Disagree with Coriolis causing a right hit if shooting east.
I have 2 long range plates that are due East, one at 900 yards and one at 1350. Even with my Ultra mag's the 1350 due east will hit 6 to 7 inches to the right, even with correction for spin drift. If I forget to correct for spin drift I will miss the plate completely. I now correct for both and enjoy pounding that plate with a few different rifles. I need to try my BR4 with the enviro's turned on but haven't had the time, that would validate maybe. Just my findings as I shoot these 2 plates alot! cheers, Jason
Well the name of this forum is long range hunting. The more precise shot placement is with a stick and string or a modern rifle system the better for everyone including the game animal right? Is "sniping" any less valid or virtuous than hiding in ambush, wearing hi tech carbon lined clothes, washed in fancy scent eliminating detergent, climbing up in a tree stand constructed of steel and cammo painted to lay in wait for a buck that has been videoed, observed from the comfort of a living room sitting by the fire and patterned for two years so meticulously that you know within 15-20 minutes when he will likely walk under your stand within 10-25 yards for a broad side shot as he bows his head to take a last bit of c'mere deer?? Modern technical advances have made the "stick and string" season much different than primitive times as well. Of course, Same is true with modern rifle and muzzle loaders. Game management success in some states has made for a very robust population of animals that can sustain hunting seasons for all three methods. For me, I enjoy and prefer the challenge of wide open space, glassing for wary game and honing my skills with a modern firearm to place a first round into a vital zone at extended range. To do that well, I shoot and train on steel targets out to a mile in dynamic field scenarios, not a bench rest at a range. No shark being jumped here at all, just the passion of being a better rifleman to harvest game at the limit of my personal ability, which is generally about 800-1100 yards max and if the opportunity is there I will harvest game much closer. To each their own.
