..22 barrel

[BCRider]

As I understand it today's primers are not corrosive in any way. And as such they don't affect a barrel.

Going back in time in terms of the old rifles at the turn of the last century it should be noted that rimfire ammo was largely and commonly produced using good ol' black powder up well into the 'teens and possibly even the 20's. So priming be darned. Just the fouling from the black powder is very corrosive as one of the byproducts of burning the powder is a salt that attracts moisture in the air. And if not cleaned out in a timely manner it can cause rust in the bore and resulting erosion of the metal. Sadly many a old "boys rifle" were likely not attended to in that sort of timely manner. Or the rifle may have been an old barn gun which just got used and set aside.

But we're talking match grade. And we're talking today's setups. So I'd suggest that it's more likely to harm the bore from incorrect cleaning than it is to harm it from shooting.

What I have noticed on my rifles is that over many hundreds of rounds shot that a crusty buildup appears at the muzzle crown. In one case it was noticeably off kilter. Now I could see that ring affecting the accuracy. But it was easy enough to clean away with just a little patch soaked with solvent without patching the bore.

 

[hometownhero]

What I have noticed on my rifles is that over many hundreds of rounds shot that a crusty buildup appears at the muzzle crown. In one case it was noticeably off kilter. Now I could see that ring affecting the accuracy. But it was easy enough to clean away with just a little patch soaked with solvent without patching the bore.

If it isn't even all the way around you have a bad crown and that will effect accuracy. Get that looked at asap.

This is pretty much even all the way around if it isn't then the crown is dinged up.

This one is cool looking lol

 

[dizzy]

You most likely have lead build up in your barrel. If you get just a little lead build it, as the next bullet passes by it, more lead gets shaved off the bullet, which deforms the bullet so when the bullet hits the muzzle it no longer forms a complete seal. This really affects accuracy as gas can then slip by the bullet before it totally exits the muzzle, which then alters its flight trajectory as it will cause a little wobble. Happens all the time in 22 barrels. You sometimes really need to clean them very well to get all the lead out.

Cold weather shooting can have an affect at how much lead is laid down in the barrel, a hot bullet in a cold barrel has more friction than a hot bullet in a warm barrel, especially a non lubed bullet.

I'd be willing to bet if you ran a bore scope down your GM you'd see a lot more lead than you would ever believe possible.

clean it good with a lead remover, and you will see your accuracy come back, this all of course is assuming you haven't nicked the crown in any way, and assuming you have no powder buildup where the rim of the bullets sits in the chamber.

 

[3dmark]

Which one did you get?

I have a magnum research 10/22 mag with their cf barrel and a 22lr with a ten x competition barrel.

 

[TRaTSeRiF]

Thanks.. Now, decisions, decisions, decisions

 

[BCRider]

Hometown, on mine it wasn't just a stain like your pictures. It was an actual crusty buildup that was darn near 1mm thick around the crown. And as I said a little higher on the one side. Just enough to notice.

Accuracy was still surprisingly good despite the crusty ring and it being a little tilted in how it formed.

On the subject of leading. My own experience is that I've only had leading in two guns. Both handguns. One was brand new and leaded badly at first, then not so badly then not again since. Took about 120 rounds to wear away whatever was causing it. The other was a "used" semi auto handgun and it too leaded badly after something like 200 rounds. But since I cleaned it out it's never done it again.

On rifles not a whisper of any leading in any of them despite up around a case or so shot over the last 3 to 4 years through rifles.

So all in all I'd have to say that I'd have to be having a pretty bad day to find one of my rifles was leading up.

 

[hometownhero]

Hometown, on mine it wasn't just a stain like your pictures. It was an actual crusty buildup that was darn near 1mm thick around the crown. And as I said a little higher on the one side. Just enough to notice.

Accuracy was still surprisingly good despite the crusty ring and it being a little tilted in how it formed.

Those are just images of crowns pulled form the net. All rimfire rifles I have get that buildup. Just was showing how it should look even all the way around if the crown isn't messed up.

 

[BCRider]

Fair enough. I'll watch for an out of balance buildup in the future.

The rifle in question, my H001 Henry, was and still is a great shooter. I didn't get concerned over the non symmetry of the build up since it was thick enough and soft enough that it's possible and likely that just handling the gun resulted in some of the build up being flaked away. Since being cleaned the new deposits look nice and symmetrical but it has a long way to go to get as thick as the last one.

 

[trevj]

I have a carbon fibre barrel on my 10/22 and it is very accurate and consistent. I would buy another one in a minute

Yeah, I'll be clear here.

My AR7 was crap. CRAP!

That it soured me on the concept does not in any way mean that the new composite barrels are crap, just that I have had a bad experience with the idea in the past.

I would expect quite different results from a Carbon wrap VQ barrel, than from the cast aluminum wrapper on the Charter Arms one!

Cheers
Trev

 

[mikeystew]

Yeah, I'll be clear here.

My AR7 was crap. CRAP!

That it soured me on the concept does not in any way mean that the new composite barrels are crap, just that I have had a bad experience with the idea in the past.

I would expect quite different results from a Carbon wrap VQ barrel, than from the cast aluminum wrapper on the Charter Arms one!

Cheers
Trev

I had the same experience with a Henry survival rifle. It was indeed also... CRAP!

But my step father has the original armalite version with the aluminum wrapped barrel and it's a flawlessly reliable tack driver... Go figure.

 

[3dmark]

Both my cf barrels are very good shooters. I don't target practice with either but I know that both a very capable of 0.5s at 50m.

The 22 magnum will shoot under an inch at 100.

I had a MR 22lr modded with some Kidd stuff and it was a clover leaf shooter with target ammo.

 

[Tack Driver Armoury]

You can shoot out any barrel fast if you let it glow and continue rapid firing. You'll need a crate of loaded GSG 110rd mags or some kind of gravity-feed system and a fast, untiring finger. The ladies will love you. You'll be hard-pressed to burn your 22 barrel, in other words. And besides a decent new barrel might only run $150.

Also if you port your barrel (via electrical discharge..) you don't need to care about the crown so much, bleeding the gas before the bullet leaves the muzzle. Good luck getting it ported in Canada, though. If you find somebody please tell us!