One of my favorite rifles is a Kimber Talkeetna chambered in .375 H&H. I used it in late October of last year to shoot my first mule deer at 203 yards using a really good load that I worked up consisting of a Barnes 250gr TTSX bullet, VV N540 powder, Federal GM215M primer and Remington brass. Muzzle velocity is right around 2,800 fps. That particular rifle has a Zeiss Conquest 3-9x40mm scope on it with an RZ600 reticle which is my favorite hunting reticle. Once you have your load data and a 200 yard zero, you can use the utility on Zeiss' website to calculate the required scope magnification so that the holdover stadia line up with the indicated values. It turns out (theoretically) that I need to have the power ring on 7.5x for the stadia to be accurate. I used a silver permanent marker to put a dot on the scale at 7.5x so that I don't forget.
Anyway, this past Monday I was making scope corrections on a suppressed .308 Win at 350 yards (five black hits on steel MGM target) and since I'd made up 25 rounds of .375 H&H for the mule deer hunt and only shot one round, I figured I'd shoot four rounds to see if the stadia for 350 yards is accurate. You can see the copper colored hits on the plate and they're numbered in the order they were shot. I thought I missed the first shot but in fact clipped the edge. I made no scope adjustment and took another shot figuring that perhaps it was a bad shot. I knew I hit the target with the second shot but didn't realize that it rotated the target approximately 30° counterclockwise from true. I made a scope correction left of 1/2 moa which is about 1-3/4" at 350 yards. The third shot moved the target even more to approximately 45° from true (again I didn't realize) so I dialed in another 1/2 moa. I think the windage changes on target were off due to the rotation of the target between shots. Regardless, I'm really pleased with the results but probably not for the reason that you might think. The target is 11-13/16" wide and I was trying to get a 350 yard wind zero while checking elevation on target. The thing that I'm excited about is that all four shots fall within a vertical deviation of 2-3/4" which is about 3/4 moa. Also, the shots are very close to the horizontal centerline of the target which was my POA which validates the RZ600 reticle holdover for 350 yards. I'd like to do more testing but for now I have good data for 100, 200 and 350 yards. For the record, MGM targets are excellent and five hits of .308 Win (168gr) didn't move the target, unlike one hit of a .375 H&H (250gr).
Anyway, this past Monday I was making scope corrections on a suppressed .308 Win at 350 yards (five black hits on steel MGM target) and since I'd made up 25 rounds of .375 H&H for the mule deer hunt and only shot one round, I figured I'd shoot four rounds to see if the stadia for 350 yards is accurate. You can see the copper colored hits on the plate and they're numbered in the order they were shot. I thought I missed the first shot but in fact clipped the edge. I made no scope adjustment and took another shot figuring that perhaps it was a bad shot. I knew I hit the target with the second shot but didn't realize that it rotated the target approximately 30° counterclockwise from true. I made a scope correction left of 1/2 moa which is about 1-3/4" at 350 yards. The third shot moved the target even more to approximately 45° from true (again I didn't realize) so I dialed in another 1/2 moa. I think the windage changes on target were off due to the rotation of the target between shots. Regardless, I'm really pleased with the results but probably not for the reason that you might think. The target is 11-13/16" wide and I was trying to get a 350 yard wind zero while checking elevation on target. The thing that I'm excited about is that all four shots fall within a vertical deviation of 2-3/4" which is about 3/4 moa. Also, the shots are very close to the horizontal centerline of the target which was my POA which validates the RZ600 reticle holdover for 350 yards. I'd like to do more testing but for now I have good data for 100, 200 and 350 yards. For the record, MGM targets are excellent and five hits of .308 Win (168gr) didn't move the target, unlike one hit of a .375 H&H (250gr).
