OzFclass

I hate it when one shot ends up out of the group.
Something this load/gun seems to do...urrg. Bit of a head scratcher as to why.
This group is 900 yards

Usually it's the shooter . . . . .

Sorry my friend I think your load is fine and your rifle is to, this looks like an operator error. Don't take your last shot for granted and i think your group will only get smaller. I cant remember the number of times I had done the same thing, its still a nice 59.8.

Used to get similar. Ended up being position related.

Brad Y wrote:Used to get similar. Ended up being position related.

You get "excited" with the group that's forming & it lifts your hips off the ground?

A typical trigger pull shot.

If every shot is the same, then you will eliminate that one. Practise in mental conditioning will fix.

Thanks for the replies..
mmm - could be shooter and position - doesn't happen with my comp guns tho...they might be a little more forgiving than this setup perhaps...(this is just one example from this gun) its not my first "potential" clean at long range so I'm well versed in the mental aspects...don't count, read the wind and send it is my motto...I did get the wind call wrong for sure...that I can live with. I had to wait a minute or so as the wind was building...I sent it a touch too early.
PS - its FTR not TR...from what I understand that would be a classic "trigger pull" issue for TR.

Trigger pull can still bite over bags, I specialise in buggering up good groups like that

I had the same issue for months i thought it was my rifle to. Turns out it was me getting excited with the fact that I was on track to shoot a possible

Brad Y wrote:Used to get similar. Ended up being position related.

what changes did you make?

I found I was getting more and more hunched up behind the gun during the string. In the end I was gripping hard and jerking trigger. Ultimately changed style of stock to something longer and more user friendly. This was also after I had a fair bit of a break from shooting. My technique needed some attention. Learnt two things- don’t try and the invent the wheel, and don’t stop shooting. This was coming from a year or two before shooting FO. Now trying to be just as competitive in FTR. You could have the hottest shooting gun in FTR but if you can’t drive it right and consistent then your not going to get the results you want. I find it overall a much more challenging discipline to be involved in.

While it's possibly related to that particular cartridge or environmental factors, it was probably you tensing up on the gun.

The projectile is in the barrel, and the rifle is moving under recoil for about 1.5 msec. While 1.5 msec is not a long time it is enough time for things to change. Consider this @900 yards



The first 6 shots are a tight group. I then adjusted 2 right and 1 down (1/8 MOA clicks). Yes it should have been only 1/8 right. Anyway shots 7-9 are effectively in the same group as 1-6 allowing for that.

Shot 10 is however considerably lower, and related to me tensing up.

Consider this target shot the week after at short range (500) with heavy mirage and a 15mph fishtailing tailwind but using the same rifle and ammo with a centre hold an no adjustment to the sights.



It took a moment to work out why two groups were forming. Because it was such a short-range blaming the ammo or environmental conditions for the vertical was not reasonable (and the LabRadar said the ES was 10). So knowing it was me my observation was that very light "free recoil" type shoulder pressure resulted in higher shots than a firm grip pulling the butt tightly into the shoulder pocket. This was entirely repeatable. Light shoulder pressure -> top group, firm shoulder pressure -> bottom group.

So, my assumption is that the lighter shoulder pressure allows enough muzzle flip to happen while the projectile is still in the barrel that it moves the group. This group movement is quite significant in that, while this rifle is a <1/4 MOA gun, my input can change the point of impact by 1/2 an MOA.

HTH.

Lot's of gripping and jerking in WA FTR I hear . . . . . .

@tachyon - no doubt hold affects shots...especially when there is a significant difference in technique. Technique on the last shot or trigger pulling using bipods and bags to go from an x to a 6 yip...but to throw it into a solid 5...mmm...not so sure on that one...your first picture illustrates my experience to date on other guns and setups.

Here is a 1000 yard group...shot 10 had me really worried, (further analysis showed double grouping which you can see to some extent in this pic)...I tracked it down to seating depth (different gun a few years ago)...its why I don't put odd shots down to shooter technique as a default...odd shots out or double groups can just be a sign that your on the edge of the seating depth node...or technique.