I don't clean barrels on .22LRs. I don't think it is necessary - another reason I do almost all my shooting with .22 rifles and pistols.
I've had good luck with a dollop of JB Bore Shine, placed on a couple of patches wrapped around a brush and chucked into a hand drill. I've used this gizmo to polish several tight chambers, .22 and others, and it always improved extraction.

More on the accuracy/precision side.Are you a plinker or a Bullseye / target precision guy..
I 'cleaned' my silhouette gun last fall before putting it away more to oil it than anything. Took me about 100rnds for the damn thing to settle down and shoot right again.
The reason you should clean your rimfires is to remove carbon build-up just ahead of chamber cause by powder, primer residue
I have a couple of rimfires that have not had their barrels cleaned in many thousands of rounds, and many others with lower round counts but still well over 1000 rounds each, also with no barrel cleaning. None of these guns display any deterioration in overall accuracy, and most are shooting better now than ever. They range from simple cheapo plinkers to Anschutz match rifles. Where is this "carbon build-up" on my guns? It must be darn near blocking the barrel after all those rounds. Many years ago, I did experience a ring of crud in the chambers of .22lr rifles after shooting large numbers of .22shorts in them, but that's about it. I have never seen the problem when shooting long rifle cartridges in barrels chambered for them.
I agree that switching ammo brands often requires that you shoot a few, or a few dozen, rounds before the barrel will display the best accuracy it is capable of with that ammo...I'd love to hear a good explanation for that "seasoning" of the barrel that often seems to be required.
Clean the actions, sure. But why would you ever shove anything down the barrel of a rifle, risking unnecessary damage, unless you need to? Like Freyr pointed out, you likely must accept a certain loss of accuracy for some finite number of rounds until you get that gun shooting its best again.
Please prove me wrong. Someone come on here and honestly say that their rimfire displays a gradual deterioration of accuracy that isn't related to ammo changes, and that the accuracy is restored after a nice compulsive barrel scrubbing. Anyone?
I don't clean barrels on .22LRs. I don't think it is necessary - another reason I do almost all my shooting with .22 rifles and pistols.
I'm starting to think the same thing other than professional competition.. any Pros out there?
When I first started buying guns as a teenager, the first few were .22's, including a 10/22. I cleaned them after every shooting session, just as carefully as I cleaned my hand-me-down 12-gauge Ithaca 37 and my .303, i.e. thoroughly to the point of fanaticism. After reading an article about it, I decided to stop cleaning until function or accuracy began to suffer. The 10/22 went several thousand rounds before it started to gum up and misfeed. I cleaned the action thoroughly, and it went on to go another few thousand before it needed attention again. The barrel was never cleaned again...ever. That gun's accuracy never, ever declined in all the years I owned it (roughly 22 years). I sold it to a guy who still owns, uses and loves it.
Today, I have around 15 assorted .22's...bolts, levers, semis, single shots. I clean the actions when they need it, which varies from gun to gun and from ammo to ammo but is almost never more frequently than every thousand rounds or so. If a .22 needs cleaning more often than that, I'll stop using that particular brand of crappy usually-imported ammo...after I use it all up in practice...and the problem always goes away. Keep in mind that I'm talking here about cleaning the action, bolt, etc...I am not cleaning the barrels...EVER. The only exception would be a hunting gun that has gotten wet. That will get swabbed out, oiled, and then dry-patched before the next firing.
I shoot a fair bit, at least a couple of times a week, usually every day in good or even fair weather, and most of it is with .22's...I would estimate that 98% of the rifle shots I fire are with .22's...whose barrels are never cleaned. Accuracy has never suffered. My Anschutz 54 Match rifle, the same specimen that I shot at the Hart House Rifle club at UofT in the 1970's, shoots as well or better now than it ever did. My BSA target rifle has somewhat fewer rounds through it (fired by me, anyway) than the Anschutz, but it currently holds the record for lack of barrel cleaning. I got it in 1980 or 81, I shoot it regularly, at least once a week...and I have never, ever cleaned the barrel. It wears the same BSA aperture sights that it came with (the Anschutz now has a scope) and it has only gotten better and better.
It's just another, slightly less-publicized reason for shooting rimfires, and it ranks right up there with low cost, low noise, accuracy and all the others.![]()
If you start to note a degradation in accuracy, then its time to look at possible causes. If the accuracy holds steady on your 22, then I concur with baldtop's advice.
You mention shooting in the 1970s. They were still shooting the Dominion Marksman program, where if you shot long enough and straight enough, you could end up with a big, engraved brass shield, called the gold shield.
Did you shoot on this program?
I notice I got my last gold shield in 1972.
Cleaning is an absolute necessity in the fullbore target game. We clean after 50 or so rounds. I put thousands of rounds through my Sako P72 in .22lr and decided to clean the barrel. Virtually nothing came out on the patches. Clean and grease actions by all means, light coating of oil on metal surfaces. Leave the barrel alone unless it gets wet. Don't touch the muzzle on carpets - salt from peoples' shoes could cause damage.



























