Gun shoots way left help!

[Harrympope]

Front sight to left and rear sight right.both about hanging way out.gun shoots good groups but still is 2" left at 25 yards.
Gun is Siler flint,45 green mt 40" barrel.lods are .440 ball,muslin and 40-60g fff Kix.
Gun is used and sights were like this when I got it.

[Scott Bumpus]

Check the crown.  sounds like it may be out of square. 

[Harrympope]

Check the crown.  sounds like it may be out of square.

Perfectly square off the lands.its strange.the muzzle looks perfect.

[flinchrocket]

How about a picture?

[Scott Bumpus]

Barrell may need bending.  Check out the post labeled  "fowler".  Hard to say without the gun in hand.

[smylee grouch]

Would there be any chance that the barrel has some run out to one side?

[rich pierce]

A Green Mountain barrel will be on center and hard to bend. 

[Harrympope]

Pictures.

[Robby]

I'd pull the breech plug and look down a clean and shiny barrel bore to see if there is a bend in it. I agree with Rich on green mountain barrels but it wouldn't be the first one bent in shipment.
Robby

[Harrympope]

I'd pull the breech plug and look down a clean and shiny barrel bore to see if there is a bend in it. I agree with Rich on green mountain barrels but it wouldn't be the first one bent in shipment.
Robby

That was my thought.ive bent thin barrel air guns before but this would require a press,not a crook in a tree 😁

[Scott Bumpus]

Is it just the photo or does that crown looked dinged a bit?

[smylee grouch]

I just checked the muzzle of a Green Mountain barrel that I have in 45 cal. and the cuts seem noticeably wider than the lands on mine compared to the one in the photo.

[Flint62Smoothie]

Blocked up on a 2x4 at each end and I’d bet $$ a ratchet clamp would put a bend in it!

That is how I did my 1st one, including making witness marks to place it back on the blocks in the same way every time. Then I would take repeated measurements until I observed a bend using those measurements - before & after.

Since then I just wing it (it works!) and use the shooting bench or forked tree for the lever.

[Gordy]

I just had this problem this spring with a 40 caliber Green Mountain Barrel. Shot left about 3 inches at 25 yards off of the bench. Yes it would group well too. Found out the barrel had a bend in it. Removed the breech plug, was able to see the bend in barrel when you would rotate it while looking down the bore. Long story short, I ended up putting a new Colerain Barrel on that rifle, shoots great now. And my sights aren't hanging off the side of the barrel. Good luck.

[Ky-Flinter]

Is it just the photo or does that crown looked dinged a bit?

I saw that too.  Second picture.  But I would still wager the barrel is bent.

-Ron

[flinchrocket]

We know it had 2" cut off somewhere. Probably the muzzle so they wouldn't have to re-cut the breech threads. I would check that crown pretty good before I started bending on it.

[little joe]

You never mentioned your skill level with a cap or flint gun. Have a good shooter put a few rounds down range. This is what I did and it ain,t the gun.

[bgf]

Just out of curiosity, what flat are the markings on at the breech?  Bottom, top, or other?

[Maven]

"Is it just the photo or does that crown looked dinged a bit?"

I think Scott's correct.  You can see it ~ 3:30 position if you enlarge the photo.

[Harrympope]

You never mentioned your skill level with a cap or flint gun. Have a good shooter put a few rounds down range. This is what I did and it ain,t the gun.

Did that,but it is a possibility .when I got the gun previous owner had same ussue (didn't tell me though)

[Harrympope]

I'll look at the crown and give it a lap and see if that helps.i did see a small burr on a land I hadn't seen.

Thanks for the input everyone

[Daryl]

There is a ding, but it looks as it if doesn't go into the bore.

A bit of wet/dry 320 paper or 320 emery cloth will do wonders to smooth up those machine cut corners in your crown, HM.  Let your thumb do the walking. Turn the barrel now and then. Will take no more than 1 minute to smooth it up. The result will be an easier starting load, especially with heavier patches.

[Harrympope]

Ding didn't go into rifling.i lapped it though.next trip out will tell.

[Hungry Horse]

Is the barrel cut off square? The dings in the crown don’t have to get down to the lands, and grooves to change point of impact. If the barrel has run out usually the maker will stamp his marks on the flat with the run out.

  Hungry Horse

[Daryl]

I had a .50 cal barrel a while back, that acted the same.  We replaced it with a .45 GM in which the hole was straight. I do not know the make of the barrel

that shot left(as well). The hole inside looked kind of ok, but was crooked, as the hole ran to the right, then back to the middle at the muzzle. If it was cut off

at the 36" length, it would show the hole to be not in the middle of the barrel, yet it was at the breech and the muzzle at 42". This crooked last 6 r 7 inches,

made it shoot HARD to one side. the only 'fix, would be to rotate the barrel if possible, so the runnout was up or down, or simply to bend it. Failing that, replacement.