cutting and crowning a barrel

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Greg Y said:
I chamber and thread rifle barrels for unmentionables at my shop. Here's a pic of how I setup and indicate before I cut on a barrel. Your machinist will understand. View attachment 363183View attachment 363184
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thank you for this as he is very knowledgeable in his field it’s just a rifle barrel is gonna be new to him which he did make clear up front to me , this will be a wonderful help i am considering some of the easier things i may be able to try after ready several of the comments here. that why i love this group as you members with the experience for this kind of work will freely help us that are getting into unsure territory in our journey.
 
ZUG said:
I would try the least destructive method first. First clean up the bore - then shoot it if it does not perform well then cone it - then shoot it if it does not perform well then cut and recrown it.
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i have cleaned the bore using the steel wool method and scrubbed extensively, i considered a lab as mentioned above. all this is still kinda new to me as fare as knowing what to try first to help gain accuracy.
 
just wanna thank all of you guys for your help keep the comments coming as i work a full time job underground in the mines that’s why i’m late to reply sometime an this is kinda weekend project, sure wish i had more time as i really enjoy not only shooting but everything else that comes with the sport these old rifles. i’m gonna try my best to have this one cleaned up and grouping a little better for our opening deer season here in West Virginia on the 25th.
 
Phil Coffins said:
I would cut and crown that barrel. How a barrel lets go of the projectile is important. If coning it I prefer a much shallower job then I’ve seen done with the Joe tool. The barrel on the left is how I crown a barrel and load without a short starter. The other may work well but you can see the cone doesn’t go deep enough for your issue.
IMG_0421 by Oliver Sudden, on Flickr
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I would do as Krisco Kid suggested and cone the barrell with a Joe Wood coning toll and recrown.
 
I would cone it.
I’ve did several before and after tests with the Joe Woods tool and can’t detect a difference from the bench.
 
just an update on the rifle thank you for all the responses and recommendations i did clean up the crown a little using different grades of wet dry sandpaper and thumb pressure went out and shot her again groups tighten up but i still have a stray flyer after the 4th to 5th shot and it’s never consistent just somewhere on paper the strang thing is i can keep right on shooting and groups seem to come back i was reading about possibly the barrel getting hot and causing a muzzleloader to notngroup well can’t remember what it was called when it was doing that but did notice that is was colder today and wonder if that has anything to do with my issues. i’m still leaning on cutting and crowning or coning can’t decide between the two.
 

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