Even if you reload, common calibers still make things easier. Prairieville. When I learned the 50/200 it was for M4 and or carry handle iron sights and then Red Dots. The 243 Wins muzzle velocity hinges on its bullet weight. What that means is,. I shoot Federal Power-Shok 100gn soft points and zero at 100 yards. Ever have someone suggest to zero your rifle at 50 yards because that will provide a secondary zero at 200 yards? Don't believe me? Camo Crew is compensated for referring traffic and business to these companies. This means that with a 26 yard zero, I can hold dead-center of a deers vitals and kill it cleanly from 0 to 310 yards without adjusting my hold. But check your PPU, and shoot some other brands. 95 gr. Its no secret that I love the .243 Winchester caliber rifle cartridge. Drop continues beyond that to three hundred yards to 9.88 inches. Draw a dot on the head, aim at that and shoot it. in my local suppliers the difference between buying 20 100gr PRVI to 20 75gr rounds is 11.50 vs 38just doesn't seem worth almost 3 times the price. Here is a link to a program that will give you all the tragectory info you need. Review. at 150 a 100yds zero is only going to be around 1" low remember and will only drop another 2" or so- your doubling or more the drop that would be expected. The proof was in the puddin as they say. But with the technique mentioned above, you can simply aim for an animals vitals out to 300 yards and concentrate on a smooth trigger pull. If you want to work it our properly, invest in one of the ballistics programs, input as much data as you can and see what the ballistic curve looks like. An other danger with the head shot is that you will have to shoot higher if the deer has its head up and the bullit will have to travel further before it touches down wether or not it is a shoot through or a clean miss . The Basic start used by British snipers is to gather what is termed "real world" data 100 mtrs to 1500 mtrs then the same 100-1500 in yardage in thier log book for thier individual rifle (this applies to the std issue L115A3 by the way). Meaning, across the board, almost nobody could get a repeatable zero at 200 due to the MOA of the irons, the size of the DOT, and/or shooter error. So when I go to hunt at a different location, different altitude, or different temperature, I may no longer be zeroed. Notice that the cluster shrinks on each target as the velocity increases. And the process begins all over. With a 100 yard zero for a .243, youd think that things would get better and youd be wrong.