bore, polishing?

so, ive had 2 x 270 remmys, that were meticulously scrubbed by me to remove all copper etc every time shot, which grouped unbelievably with fact ammo at 100m.

ive now got a used ss remmy 700 in 308, and ive scrubbed the bore and it keeps showing copper= blue tinge to patches, will this be from the brass? tipped thingees that hold the patches or not ? ive run out of barnes cr10 or whatever its called, so will go to get some more. but have read some ppls use autosol? to polish the bore so i dont have to go thru the 1 shot, then clean then 1 shot then clean drama, not that im lazy, i just dont wanna :) im sure there are ppls out there that dont believe in any of these processes, and some that do, im just trying to find out who "does" polish their bore when barrel is new, and what do they use?

when i shot both my 270s,after the first few super duper cleans they always cleaned up a beaut with no copper left in there very quickly....

IMHO you should clean a rifle bore as few times as possible. Adverse conditions aside if your happy with the rifles accuracy keep shooting it till is looses it a bit remember how many rnds it took to taper off, then clean the barrel. I hardly touch my stainless centrefire barrels, I coat my slugs with HBN which means my barrels require a couple of patches every 100-150 rounds. There is something wrong with the barrel if it fouls too easy and a shiny bore doesnt mean its clean.
I wouldnt get too hung up on it at all as long as it shoots. The fastest way to ruin a military weapon was the over cleaning regime that used to be common place.

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Originally Posted by R93

IMHO you should clean a rifle bore as few times as possible. Adverse conditions aside if your happy with the rifles accuracy keep shooting it till is looses it a bit remember how many rnds it took to taper off, then clean the barrel. I hardly touch my stainless centrefire barrels, I coat my slugs with HBN which means my barrels require a couple of patches every 100-150 rounds. There is something wrong with the barrel if it fouls too easy and a shiny bore doesnt mean its clean.
I wouldnt get too hung up on it at all as long as it shoots. The fastest way to ruin a military weapon was the over cleaning regime that used to be common place.

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Working on the theory that the carbon build up in the bore is protecting it from wear?
Blued barrels that require constant cleaning(or rather protecting) dont seem to wear out excessively fast

I dont get much of either, carbon or copper. I run a brush a couple times after I have run a wet patch of kroil. It then takes around 3-4 patches on a jag till clean. After that, if I see any anomalies or high points I may use something stronger.

Just re read the original post and think Antsman is on about running in a barrel?
If so I dont believe in it, never done it. Hand lapped a few but, running in a steel barrel by firing softer metal down it is IMO a myth. Have a look at a machine marked barrel with a bore scope prior to and after firing a heap of rounds. Marks are still there, they're just camouflaged slightly. Even lapping will not save some barrels.

I only really use autosol if I want to clean up a sewer pipe bore (read old Lee Enfield, Mosin Nagant). My other barrels, I just shoot and run an oily patch through the barrel when I get home. I don't believe in going full retard with copper removal, I only do a copper run when accuracy turns to shit big time. Shoot more clean less. I used to spend hours upon hours obsessing over getting my bores absolutely spotless and it is a pointless exercise as it will shoot like shit till it fouls up again. Barrel break in is rubbish to, just shoot it.

I'm a firm believer of autosol on a new bore.
Shoot 1 clean 1, has got to be the most retarded process around. I BET it was dreamed up by a factory ammo maker :)

Scrub the fuck out of the bore with autosol, clean it all out, then shoot the shit out it.
Autosol is also required to remove the carbon ring that some bigger cals will form down past the throat.

Would you do this on a good match barrel that has been lapped?

Autosol in a barrel is doing exactly that - lapping
So if it was a prelapped barrel, I would personally say NO as its been done already

If its just on a cloth patch it isnt a decent lap. Got to be on a plug to be done properly in my experience, especially to remove tight spots. Heaps quicker at least.

I use a spike jag with a large section of patch roll on it.
If it was dry, 'may' get stuck - pretty tight

I must give it a go sometime. Be easier than making a plug if you want a quick polish

what about autosole on a bronze bore brush every hundred or so rounds to clean it out thats not gona hurt it is it?

Never used it before Smiddy but if people put it on a jag and cloth I seriously doubt it would be a problem.

Im not sure that autosol on a brush would do anythign to be honest?

Speaking of lapping. I have a new MAB barrel and I heard they aren't lapped. Does anyone know if this is true? If so how should I lap it? Autosol and tight jag like Spanners has suggested?

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Originally Posted by Normie

Speaking of lapping. I have a new MAB barrel and I heard they aren't lapped. Does anyone know if this is true? If so how should I lap it? Autosol and tight jag like Spanners has suggested?

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I would shoot it first. If it shoots and doesnt copper up then it will be sweet. A barrel does not have to be lapped to perform. Otherwise give the jag and rag a go.

Thanks will do.

I have had 2-3 MAB barrels and they all shot really well. Still got one on a remmy .308. I never lapped any of them.

That's good to know. Thanks

Probably not lapping as such but I got a new 303 barrel and i could see the burr at the start of the lands from chamber reaming.
It was very tight on a patch at that spot and you could see where it was tearing the patch.
Half an hour with JBs on a tight patch short stroking the first few inches smoothed it right up.
Haven't got around to fitting the barrel yet cant make up my mind which one to put it on.

JB's every 200 odd rounds gets rid of carbon build up. I've got to clean mine after 20+ rounds otherwise accuracy = rubbish. That is with a 22-250 doing around 3600fps

I have a marine industrial product I'm going to try for carbon removal. By all accounts it whips it off cylinder heads and injector nozzles pretty good without damaging metals.

That sounds interesting spanners, crc carb cleaner was great for that also.

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Originally Posted by 7mmsaum

That sounds interesting spanners, crc carb cleaner was great for that also.

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This stuff makes carb cleaner look like water :D
Need to do some testing on barrel off cuts long term to see if it does any damage

There is 'something' in brake clean and carb clean which can fuck some finishes on guns - i know of a pistol that it started to remove what is normally a hard coating.
Little bit wary of it myself

It contains carbon tetrachloride that is very agressive, I finished my heavy trade diesel apprenticeship in 1987 and can still remember the msd sheets info on it. Then went on to get qualified in petrol as well and they hardly used the stuff.