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Posted: 10/31/2007 11:14:34 AM EDT
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I know the procedure for a barrel break in, but the point of the break in is that the chamber is not lapped, and when the round is fired, any small imperfections in the chamber will shave small pieces of copper off. At the high pressures in the chamber, the copper becomes liquid and gets distributed throughout the bore. This is the reason for the shoot once, clean theory. I have broken in barrels using EEZOX and Hoppes #9 but i just purchased a higher end noveske ss barrel and wanted to make sure I was doing it right. Do I NEED an ammonia based cleaner to remove the copper? If so what should I use and how can I make sure there is no ammonia residue in the bore before I take the next shot? Thanks :D |
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Lots of theories on the whole break in period, you may open up a can of worms with that question. I assume you do not have a chrome lined barrel, they don't need broken in. I imagine if you are shooting and cleaning, you don't need ammonia based cleaner for the barrel. You will not have much copper accumulating in the barrel when scrubbing between shots. If you think that a lot of copper is building up, You could try Sweets 7.62. It has 5% ammonia and turns colors when it hits the copper then doesn't when it is clean. I am not buying the whole barrel break in thing, so I just shot a round or two and cleaned it while at the same time getting the rifle sighted in. After I was hitting the spot I wanted, maybe 6-8 rounds, I just fired a few more rounds to test the groups. Then, I cleaned it for the day. Next time I shot a few more rounds in the back yard and cleaned it again. After that I fired a 30 round magazine and cleaned it. I figure I half followed the break in period. I just don't think you need to fire 1 shot for like 20 rounds and 2 shots for 20 more and so on until you have wasted 100 rounds. There was a post awhile ago explaining this. |
JB Bore Paste is what I've used with a wrap around jag & patch. 
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