Last sunday I got in some practice with the 12/15 at the indoor range, did some prone shooting at 75 m (that's 82 yds).
The rifle keeps impressing me with its accuracy - and it surely likes SK ammo.  The group below was shot with the SK long range match, but red box rifle match will do equally well, if not better.  9 out of 10 in a group just a bit over MOA, the errant shot not too sure - I didn't call it, but it still could have been me.

That's prone, sling only, from the elbows, with the standard peep sights (which are pretty good BTW)

Pretty happy with the rifle, the ammo and my shooting.  Typically, .22 LR tends to be quite unforgiving to shooter mistakes.

"Called flyer i'm sure"...





JMH

kept seeing my name- what the h...............? I didn't shoot that seven, blame somebody else!

Is there any serious prone shooter who has never shot a target like that?  I have shot several, or maybe several dozen, all attributable to me.

Next try, same rifle - 10 shots SK Long range this time.  2 shots out of the group, but then again no 7 this time.

That's shooting 'in the spirit of the original', 2 point sling, no hand stop.

Years ago, I spent some happy hours on the Eley customer test range with the late Bert Brooke’s.
Using barrelled actions clamped in a test rig, Bert was able to demonstrate that most quality .22 Ammo would group 8 or 9 shots inside a minute of angle. What the top brands, such as Tenex did was to eliminate the flyers.
Fred

No way around,  only the best stuff will be consistent.   Add to that that the little .22 is extremely sensitive to any inconsistencies or faults in holding, position,... if you see a difference in recoil behaviour of the rifle, you can be sure the POI will be different.

You can add Black powder rifles to that list!

Joe,

Attached 2 pics of the rifle - basically a bog-standard BSA 12/15 with an typical period 2-point sling, original PH7A rear sight.  Only modifiction is stripping the varnish and giving the stock an english oil finish.  Even the buttplate is still original...

I don't even use a handstop when shooting, as it is my practice rifle for my 32-20 BPCR - no handstop allowed.

And for me, I tend to think the larger calibre CF's are less sensitive than the humble .22 to shooter error.  Why, good question.  Maybe the greater recoil pulse 'kicks' through some minor inconsistencies?

Standard 2-point sling, both attachment points on the forearm.   This sling has hooks. And it even is period correct for the rifle.

Bill,

All well here, and yes, those BSA's not only have lots of character, they're also extremely accurate while also being proper steel and walnut rifles.  Fro mthe time when rifles were still machined from steel...

What ammo are you using in shooting that group?

Also, it seems you are dealing with vertical here.
Sling tension varying? 
Post or aperture front sight? A post front can be harder to hold your vertical.

beltfed/arnie

Gert,
In any event, that is good position sling shooting.
Good choice of ammo.
I shoot SKLRM in several competitions from 100 to 300yds
with my Martini Int'l MKIIs. I have a heavy, and a light model.
i am "almost" sorry I had sold my 12/15 rifle that shot Very Well. But on the other hand, I got a young fellow shooting it and he too has won matches with it.
beltfed/arnie