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Precision rifle accuracy / grouping
Posted: Sat Jul 03, 2021 12:31 pm
by atomicgale
For a modern precision 22LR rifle: What would be considered a "tight group" center-to-center at 50 meters, shot from a bench and/or vice?
Seeking realistic data on the equipment/rifle here; not the athlete.
RE: ISSF rifles, not benchrest.
examples: KK500, FWB2800, Anschutz 1907, 1913, 54.30, et cetera . . . .
Re: Precision rifle accuracy / grouping
Posted: Sat Jul 03, 2021 1:40 pm
by Moore
1/4 inch. or .250
Re: Precision rifle accuracy / grouping
Posted: Sat Jul 03, 2021 1:48 pm
by Moy
There's this floating around, but it's more of a test of ammo:
http://bulletin.accurateshooter.com/tag/bleiker/
Anyways, even though it's not an ideal test, it's a reasonable starting point if you're talking about strictly rifle accuracy, since that was set up with a sled, rear bag, massive scope magnification, etc. 5mm center-to-center is a good target for a five shot group. If you increase number of shots, maybe something like 6mm or 0.25 inch.
On a ISSF target, the 10.4mm 10-ring allows you to get ~16mm center to center and still score all 10s (including the ~5.5mm bullet diameter). That means with a good modern rifle for smallbore 3p, you don't have to worry about the rifle itself.
For benchrest shooters, I guess the situation is different.
Re: Precision rifle accuracy / grouping
Posted: Sat Jul 03, 2021 7:03 pm
by analretentive
My KK500 came with a 50m 10 shot test target group of .15. I haven't got it tuned yet, so I don't know if that is uniformly repeatable; but if it is I will be very pleased
I would prefer a 30 shot test target, but I doubt the mfgs. will ever go that far. 10 is better than 5, but 30 really tells the story.
Acceptable accuracy for successful ARA benchrest requires what is basically a 25 shot 1/4" group for a perfect 2500. 2500's are getting very commonplace; especially indoors.
Gerry
Re: Precision rifle accuracy / grouping
Posted: Mon Jul 05, 2021 8:09 am
by Paul
For an ISSF rifle, an average of 12mm-13mm 10-shot groups would be excellent. It would translate into .25'' to .30'' center-to-center.