cutting and recrowning a barrel
03-11-2007, 07:38 PM
#1
Nontypical Buck
Thread Starter
Join Date: Mar 2005
Location:
Posts: 1,186
cutting and recrowning a barrel
I have a 6.5 swed with a 29.75 that will shoot .75 groups. I want to cut and recrown the barrel to 25 inchs it is to frunt heavy to carry my? is will this hurt the acc. in any way thanks for the help
03-11-2007, 07:50 PM
#2
Typical Buck
Join Date: May 2003
Location:
Posts: 920
RE: cutting and recrowning a barrel
If done properly it just might improve upon the accuracybut done wrong will cause problems.It will also have a slight effect velocity.
Just remember anything you do to the barrel is going to effect it's harmonics, if its shoot a particular load well it might change and then again it might not. just my $.02
Just remember anything you do to the barrel is going to effect it's harmonics, if its shoot a particular load well it might change and then again it might not. just my $.02
03-12-2007, 04:47 AM
#3
Giant Nontypical
Join Date: Feb 2003
Location: Texas - BUT NOW in Madison County, NY
Posts: 6,270
RE: cutting and recrowning a barrel
ORIGINAL: renfrowridge
I have a 6.5 swed with a 29.75 that will shoot .75 groups. I want to cut and recrown the barrel to 25 inchs it is to frunt heavy to carry my? is will this hurt the acc. in any way thanks for the help
I have a 6.5 swed with a 29.75 that will shoot .75 groups. I want to cut and recrown the barrel to 25 inchs it is to frunt heavy to carry my? is will this hurt the acc. in any way thanks for the help
03-12-2007, 11:16 AM
#5
Fork Horn
Join Date: Oct 2004
Location:
Posts: 321
RE: cutting and recrowning a barrel
shorter barrel will increase the stiffness and decrease the mass... The natural frequency and associated frequencies of vibration will be altered... might make a big difference might not...
03-12-2007, 11:22 AM
#6
Nontypical Buck
Thread Starter
Join Date: Mar 2005
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Posts: 1,186
RE: cutting and recrowning a barrel
what would be the best lenght to cut it off to I dont want it shorter than 24 inchs but could be 25 , 26 what do you think. noproblem working up a load because I hand load
03-13-2007, 07:47 AM
#7
Join Date: Apr 2005
Location: Missouri
Posts: 1,429
RE: cutting and recrowning a barrel
You don't need that long of a barrel. I would think that 24" is plenty. You can buy Recrowners from brownells. they are made by Dave Manson Precision I'm pretty certain. You can hacksaw of your barrell to approximately 24 1/4" then crown it to 24. They work really slick look into it:
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=7718&title=PRECISION+REAM ERS+MUZZLE+CROWN+REFACING+TOOL
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=7718&title=PRECISION+REAM ERS+MUZZLE+CROWN+REFACING+TOOL
03-14-2007, 04:05 PM
#8
Nontypical Buck
Join Date: Feb 2003
Location: Body in SE WI, mind in U.P.
Posts: 4,781
RE: cutting and recrowning a barrel
Use a pipecutter, it will cut the barrel perfectly square. A hacksaw will work too, but getting a square cut with one is not very easy.
Chuck up a carriage bolt with a head that has a larger diameter than the barrel in a drill. plug the barrel with some rags/patches. Apply valave grinding compound to the bolt head and grind away at the muzzle at slow speed, use an orbital motion with the drill so that it cuts evenly. I've done this with a few barrels on surplus rifles that had the rifling worn down near the muzzle, all with good results.
Chuck up a carriage bolt with a head that has a larger diameter than the barrel in a drill. plug the barrel with some rags/patches. Apply valave grinding compound to the bolt head and grind away at the muzzle at slow speed, use an orbital motion with the drill so that it cuts evenly. I've done this with a few barrels on surplus rifles that had the rifling worn down near the muzzle, all with good results.
