The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

I guess you could always ask Diogenes for an opinion... :lol:

I just came across this thread, so here's what I was told by the UK importer when I took delivery of the new Blaser LRS (heavy cold forged chrom-moly match barrel)

There is no need to shoot it in. Put 50 rounds through it, then just patch it through a couple of times after each session and oil lightly.

What I have noticed, is that compared to my Swing, there's hardly any powder residue visible if I look up the bore after firing, and the first patch is almost clean. I was surprised at this and I rang and asked the Blaser guy if there was some special surface treatment to the bore, He said no, it's manufactured to be free from any surface imperfection...........................which, I guess, is why replacement barrels are £1300 a pop.

I bought a Truflite barrel and ran it in with 1 shot and clean for the first 3 shots, then just put 5 through it and cleaned with Butches Boreshine and a phosphor bronze brush and checked it with a borescope. If there was any copper in I just cleaned it again until clear. Then just shot the thing for whatever competitions I was in and cleaned it at the end of the shoot.
The purpose of doing one shot and clean etc, is to keep the copper to a minimum and is easier to clean after one shot than five/ten etc, but also to smooth the 'rough' spots that tooling makes when the chamber is cut and the bullet will eventually smooth any machine marks down and as a result you get less copper in the barrel.
If there is a lot of copper after removing the carbon I have used Sweets 7.62 and 50BMG Copper Killer (which was the best for me) but I ran out and now just use Butches Boreshine and check with my borescope.
In factory barrels they make take a little longer to break in as they may possibly be a lot 'rougher' than barrels such as Krieger, Bartlein, Truflite, Border etc. So if you have a borescope that is the only way you will know how your barrel is being cleaned properly.
That is my view anyway.