up comming review; 2 rifles in 6.5 creed

[backwoods83]

Its ok to use the finer grit on newer barrels but still won't remove all the imperfections and I'd only use the coarser on really worn barrels. Then follow up with a very thorough cleaning.

[Jinx-)]

I thought major difference between factory vs custom, is that custom are polished, bore lapped to remove those imperfections, so theoretically JB should perform some of the polishing...

[backwoods83]

You are correct for the most part but there is still no such thing as a perfect barrel, Clay Spencer is top notch and that's as close as you will get.

[Jinx-)]

I also have KG-2 bore polish, recently I read, that it can be used in combination with jacketed bullets to perform bore lapping... KG-2 Bore Restore, Fire lapping instructions, Rifle, Pistol, Shotgun

[hammertyme]

Originally Posted by Jinx-)

I thought major difference between factory vs custom, is that custom are polished, bore lapped to remove those imperfections, so theoretically JB should perform some of the polishing...

Right on: I know someone that for years figured his Heart barrels had something wrong with them if he wasn't shearing lots of copper off the bullets the first 50 rounds or so.

Personally I have been shooting Benchmark barrels for some years now and to date I have yet to find copper in the bore. In speaking with Ron @ Benchmark I think they feel that with their system the barrel being glass smooth is pretty much broke in when the consumer gets it. Put a Nice hard Nitride finish on that bore and one is going to be very hard pressed to shear copper.

However this is about Jim's research on factory barrels and personally If I spend money on a new gun the gun/barrel better not require my attention regardless of who's factory it came from. I did not make the purchase to spend days wondering or using special tools or lapping compounds to fix something that should have been right from the factory.

Neal

[Jinx-)]

From preliminary experience, this Savage LRP 260 REM does shoot good, my main purpose yesterday was to break-in new barrel, sight scope and fire-form brass which hand-stamped Lapua 308. So I set bullets 0.010 off the lands loaded with 4 different powders and drove to the range. The wind was gusting 25+ mph and my worst group at 100 yards was 1.4" 5 shots, the best 5 shot group measured 0.59". So even with no load development this riffle very capable to shoot long range. The only complain is the copper buildup, which I believe can effect accuracy, specially from cold barrel. I think bore lapping with KG-2 which I mentioned in my previous reply, seems like most effective and time-efficient solution.

[Coyboy]

I would avoid abrasive paste, or use very sparingly. You can over do it and ruin a barrel with excessive use.

A custom barrel is hand lapped with 120-150 abrasive on a lead lap, so that it works evenly along the entire bore. Creating a dimensionally uniform bore.

Pushing patches with 800-1000 grit is not going to dimensionally uniform anything. It will create a highly polished surface that will gall more copper off the bullets.