Cold bore vertical stringing
You are Unregistered, please register to use all of the features of FirearmsTalk.com!    


Firearm & Gun Forum - FireArmsTalk.com > Long Guns > General Rifle Discussion >

Cold bore vertical stringing


Reply
 
LinkBack Thread Tools Display Modes
Old 12-02-2012, 02:09 AM   #1
Feedback Score: 0 reviews
 
hoovco's Avatar
 
Join Date: Oct 2012
Location: All over the place
Posts: 665
Liked 258 Times on 154 Posts
Likes Given: 9

Default Cold bore vertical stringing

I just got a new Rem 700 and it likes to string shots vertically on a cold bore. When it gets a little bit of heat to it the groups shrink. Can anybody explain this to me?


__________________
"Inspirational Quote" - Someone Inspirational
hoovco is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 12-02-2012, 02:54 AM   #2
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
primer1's Avatar
 
Join Date: Feb 2012
Posts: 7,182
Liked 2893 Times on 1883 Posts

Default

Is the barrel free floated? The pressure against a stock increases as a barrel heats up, leading to the stringing.


__________________
Feral cat waterboarder
primer1 is offline  
 
Reply With Quote
Old 12-02-2012, 03:51 AM   #3
Feedback Score: 0 reviews
 
hoovco's Avatar
 
Join Date: Oct 2012
Location: All over the place
Posts: 665
Liked 258 Times on 154 Posts
Likes Given: 9

Default

The barrel is free floated. The stringing is only on a cold bore.
__________________
"Inspirational Quote" - Someone Inspirational
hoovco is offline  
 
Reply With Quote
Old 12-02-2012, 04:17 AM   #4
JTJ
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
JTJ's Avatar
 
Join Date: Oct 2010
Location: Lake Havasu,Arizona
Posts: 7,298
Liked 2879 Times on 1580 Posts
Likes Given: 810

Default

Check the bedding and the torque on the action screws. A slightly loose or improperly torqued action screw can cause stringing. I had a Ruger which uses pressure on the barrel that was stringing. I had it bedded, action screws torqued and the barrel floated which stopped the stringing. Go up in small increments on the torque until you get to the proper setting. Remington should provide you with the proper settings.
__________________
Patron Member NRA
"I would not be an old man if I had not been an armed young man." JTJ
I was taught to respect my elders but they are getting harder to find.
JTJ is offline  
 
Reply With Quote
Old 12-02-2012, 04:20 AM   #5
Feedback Score: 0 reviews
 
Join Date: Sep 2012
Location: The Edge of Darkness
Posts: 6,495
Liked 4795 Times on 2681 Posts
Likes Given: 1736

Default

I would slug the bore. The bore is most likely under sized or has a tight spot. This causes a higher pressure when cold throwing high. A very small amount of linal expansion allows the barrel to correct. I would try pushing a tight patch down the barrel feeling for a tight spot. The other problem could be set in the barrel from correction bending at the factory. I would return to the maker.
nitestalker is offline  
 
Reply With Quote
Old 12-02-2012, 01:47 PM   #6
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
TLuker's Avatar
 
Join Date: Nov 2010
Location: S.C.
Posts: 3,549
Liked 1961 Times on 1253 Posts
Likes Given: 4422

Default

There are a lot of possibilities here. Depending on your cleaning routine it could be the amount of fouling in your barrel, i.e. it gets more fouling and then shoots better? It could also be the load you're shooting? Some loads shoot better with a cold bore and some with a warm bore.

One other thing is to check your barrel while its hot make sure that it is still free floating. The expansion from heat could be causing it to touch a pressure point that is stabilizing it rather than throwing it further off?

Just throwing out a few more ideas?
TLuker is offline  
 
Reply With Quote
Old 12-02-2012, 08:36 PM   #7
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
locutus's Avatar
 
Join Date: Dec 2011
Location: Wyoming
Posts: 11,536
Liked 7964 Times on 4356 Posts
Likes Given: 7694

Default

Many possibilities. But 3 out of 4 times this is a bedding problem.

Push a match book cover under the barrel at the end of the stock and see f it still does it. If the problem is "cured" ya got a bedding problem.


__________________
For those who have fought for it, freedom has a taste the protected will never know!

Or at least they did before political correctness
locutus is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Which Forend/Vertical Grip Would You Choose? ryevick General Shotgun Discussion 2 07-05-2012 09:39 PM
C ar15 vertical grip alexander_car15 AR-15 Discussion 11 03-18-2011 12:17 AM
C ar15 vertical grip alexander_car15 Auto & Semi-Auto Discussion 0 03-15-2011 02:18 PM
Cold bore shot vs. rest of group killerclowns General Rifle Discussion 2 07-09-2007 09:07 PM



Newest Threads