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AR15.COM
12/1/2008 3:08:02 PM EDT
Do you have recommendations on how to "break in" a new barrel? I am not looking for pro's and con's etc, etc...Just Del-ton's recommended procedure....if there is one.

Thanks!
12/1/2008 3:47:58 PM EDT
[#1]
Insert loaded magazine into magwell.
Pull charging handle and release.
Aim firearm at target.
Pull trigger until magazine is empty.
Repeat.
12/2/2008 12:51:58 PM EDT
[#2]
Hope this is more helpfull.
From Bushmaster on a non chrome lined barrel.

"A new barrel will shoot best if careful attention is given to proper break-in. Differing opinions exist as to what constitutes proper break-in, however, we recommend that no more than 20 rounds be fired at one time before cleaning the barrel - for the first 60 rounds. Each time the barrel is cleaned for the first 120 rounds, it must be thoroughly cleaned, removing all traces of copper and fouling. Recommended procedure for thorough cleaning: In all cases it is vital that cleaning tools (brushes, patches, etc.) be pushed from the breech toward the muzzle and then removed from the rod at the muzzle end. DO NOT drag anything back through the muzzle. Clean the bore with a good bore cleaner. Decopper the bore with a copper solvent. Clean the bore again with JB Bore Cleaner paste as follows; 1. Work the JB paste into a new patch. 2. Wrap the patch around a worn bore brush. 3. Push it through the bore for ten strokes. Replace the patch every five strokes. 4. Run a dry patch then an oil patch if storing the rifle. After the barrel is broken in , clean the bore immediately after each shooting session. Decopper the barrel every 300-400 rounds. Clean the bore every 1,000 rounds with JB Bore Cleaner."
12/2/2008 2:44:44 PM EDT
[#3]
There's a lot of controversy on using JB paste.  Some of the higher end makers say it will change the dimensions of the barrel.  

I say just shoot it and clean it thoroughly after your done with your fun.

12/3/2008 4:42:08 AM EDT
[#4]
Thanks, that is helpful. I also heard bad things about JB's. Apparently it works too well and can remove material.  Hopefully someone from Delton will chime in.