Barrel set back

[liseo]

Guys.

How much of the muzzle end do you recommend cutting, on average, when you rechamber?

looking with a magnifying glass, it seems to me that the crown is perfect...but I also know that it is recommended to redo the crown.

Tks

Liseo

 

[jackieschmidt]

I set my competition barrels back on a regular basis.
I generally take about 1/8 off the crown, just to be safe.

 

[liseo]

I set my competition barrels back on a regular basis.
I generally take about 1/8 off the crown, just to be safe.

Thank you Jack

 

[dmoran]

Myself have crowns re-cut 0.020" / 20-thousandths give or take a a couple thousandths.

 

[Ccrider]

I set my competition barrels back on a regular basis.
I generally take about 1/8 off the crown, just to be safe.

How much do you normally take of the breech?

 

[liseo]

My 308 rifle, I cut off 2 inches, after 2560 shots

 

[dmoran]

How much do you normally take of the breech?

Myself, this much:

 

[jackieschmidt]

How much do you normally take of the breech?

I am really anal about keeping the throat fresh.

After about 250 to 300 rounds, I set my PPC barrels back about .025. This freshens up he throat. I will do it again the second time. The third time, I cut the thread entirely off and more or less treat it like a new blank. I then just shoot it until it gives up.

keep in mind, the way I chamber allows me to set my barrels back with little hassle, duplicating the original set up.

 

[LVLAaron]

For me, at 1000-1200 rounds I set it back "a thread" and freshen the crown.

 

[Rat Rifle]

Some Smiths say they will not set a barrel back “unless the client provides his own reamer”. Sighting possible damage to the reamer.

Any comments as to that ?

 

[B Nettesheim]

Some Smiths say they will not set a barrel back “unless the client provides his own reamer”. Sighting possible damage to the reamer.

Any comments as to that ?

Yes reamers are expensive especially when you start trying different sizes on them, barrel steel is soft until you shoot it, it work hardens as you shoot it.
The throat and leade get the hardest and now try to cut it, you will be damaging the most important part of the reamer

 

[6fatrat]

A light cut and polish on the muzzle, 1/4" max for the set back.
Steve Bair

 

[liseo]

Yes reamers are expensive especially when you start trying different sizes on them, barrel steel is soft until you shoot it, it work hardens as you shoot it.
The throat and leade get the hardest and now try to cut it, you will be damaging the most important part of the reamer

Will a carbide reamer be the solution?

 

[LVLAaron]

It’ll last longer. Some carbide reamers are a real pain in the ass to use… and need different pilots.