Never witnessed this,and I shoot down to about 30 below zero . Who in AK is claiming this,benchrest folks ? That is an interesting concept .
OK,thanks . I will look it up, sounds very interesting.Frank Gali and Mark (Marc?; don't recall his last name) - Marine Scout Sniper guys that run a class up there.
Shoot the numbers through JBM. A quick look through my phone shows 2.9” drift with a full value 3 MPH wind at 2850. It’s not exactly a slippery BR bullet and 3mph isn’t much. I’d definitely rule out cheek and shoulder pressure. And yes, revisit seating as well.Bench rest shooting with 69 gr SMK's in a 223 24" 1/8 twist. Groups at 300 yds about 1 1/4 vertical by 2 3/4 horizontal but they can vary more or less. After reading some of the replies I can see it is probably me causing it. It doesn't seem to be wind as it happens when there is no wind. Is seating depth a possibility ?
OK,thanks . I will look it up, sounds very interesting.
Guys up in AK have found that vertical split rings are causing vertical stringing.
Thumb pressure does not equate free recoil.Are you shooting free recoil? I do, and find a very small amount of thumb pressure will throw a shot. Last weekend I put 4 of 5 at 100 yds into a group that measured .09" CTC and one at 9 o'clock that opened it to .5"
Very frustrating
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Wobbly benches at a public range, neighbors with 300 WM and brakes blowing my headset off MAY be a factor.
.223, 69g lapua,Varget, BR 4, Criterion 26 in 8 twist. Wind freshening rapidly post frontal.
Horizontal stringing is very common. You just have to know your gun and conditions to know its the tune. It seems to be more common/obvious in larger calibers. Seating depth will usually fix it. Make sure your cheek is not on the rifle too.