I reload for my 7-08 and am always trying different powders and bullet weights, loaded some 120 gr nosler BT on top of 46 grs of CFE223. Took it to the range and shot it at 100 yds, it marked about 4" high which I figured was normal since the rifle was previously sighted for 150 gr match. My problem comes when I took it back to 200 yds. figuring it would shoot just about dead on or just a tad high, WRONG. It shot another 4"to 6" higher at 200..anyone have any ideas why this would happen?
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Something strange
- Thread starter NHSHOOTER
- Start date
If you sighted a rifle in at 600 yards, it will be high at 100 and higher yet at 200, and still higher at 300.
Also scope height has something to do with it, if you ever spent time with a M16/AR with iron sights on the carrying handle you'll see this.
Not near enough information to determine you case.
Also scope height has something to do with it, if you ever spent time with a M16/AR with iron sights on the carrying handle you'll see this.
Not near enough information to determine you case.
Question: You shot at 100 Yds. Did you shoot a group or a single round and same at 200 Yds.
Second Q: Is your scope... secure? Third Q: If you were sighted in at 100Yds.. with a much heavier bullet and without changing your sights you would naturally be shooting much higher with the lighter bullet. I have not found loads for the 120Gr. bullet or with your powder for reference in my older hornady manual. Good luck
Second Q: Is your scope... secure? Third Q: If you were sighted in at 100Yds.. with a much heavier bullet and without changing your sights you would naturally be shooting much higher with the lighter bullet. I have not found loads for the 120Gr. bullet or with your powder for reference in my older hornady manual. Good luck
Art Eatman
Staff in Memoriam
Somewhere around 2" high at 100 would put you near dead-on at 200 or 225, +/-. 4" high at 100 would still be around that at 200, and close to dead on around 300 or maybe 350.
I thought just as art says, if i was shooting about 4" high at 100 I should be on or just a bit high at 200 but that was not the case, I did shoot 3 shot groups and my scope and mounts are tight, my scope is also a low mount. I am just perplexed. I think I will just stick with the heavier bullets which it seems to like much better anyways, I can shoot lighter, faster bullets in my 243 and 223..
Unlicensed Dremel
Moderator
Well, simple. The bullet is still rising, relative to your line of sight. It hasn't reached it's apex yet, or is right at the apex at 200. Since you are 10" high at 200, *if* it's at its apex, you have a rifle zeroed almost perfectly at about 350-360 yards with that particular load. Probably farther than you want. Light bullets go farther. Just crank point of impact down is all. For a 300 yard zero, you want to be about 6 and 1/4" high at 200, not 10 or 12".