I will do this. I think its me. I'm new to shooting past 200 yards.Show us a few 100yd groups. No cherry picking. Go shoot 3-5 five shot groups and post them exactly how you shot them. Attempt to use the same form/fundamentals used at 400. If you didn’t pay super close attention to some/all of the fundamentals at 400, don’t at 100. If you focused very hard, then focus that hard at 100. Give us a clear picture at 100.
Let’s start there instead of everyone throwing some random suggestions.
Its an old Remington sportsman 78 .243. Heavier then a sporting barrel but not a target barrel. The scope is a borrowed Falcon FFP 5.5-25.You didn't give shit for information on rifle or optics specs but it looks to me like a shortfall in fundamentals.
The wind was almost zero, and I'm shooting next to a wood line that blocks what wind there is. Trying to shoot when there is no wind because I'm trying to work up loads.Wind, trigger control, and scope sight picture are usually the culprits of horizonal shot groups. Sometimes position allows rifle to pull, but 1st 3 are more common. If those are not the issue, scope screw tightness or God forbid, bad scope... Hope it all works out for you next range day.
What is with the BB?Really windy here tonight so no shooting. Talked to a buddy at work about it, he is a pretty accomplished shooter, and he said it was wind. He showed me an app and put in 1 mph wind, 1.4 inch at 400 yards. I could feel a slight breeze every once in a while. If you can feel it its probably at least 3-5? Sometimes I could hear the Sorghum leaves shaking. I will probably get out again next weekend. Ill go early in the morning and hope for dead calm. Hope to have my scope mounted, I'll load up a bunch of the 85s and shoot every hundred yards. I'll also do some dry firing till then. And I was told to tape a BB to the stock, that should help get me a consistent cheek weld. I'll be back.
Thank you guys again.
Have you gotten anything that helps? Read a story "lesson from a Texas warehouse" (I think) where harmonics come into play. I had a rifle that I thought was dead on. Not a sparrow lived out of the feed yard. (100 yd or so) Shot around a PD at 300 looked like the gofer dancing on 'Caddy Shack'. Anyway, found my load was 1" vert. and 6" horz. at 300 yds. Changed load and the compromise was 2x2 1/2. Best I could do.
Betting it’s your load, since factory stuff didn’t string horizontally