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24 Jul 2017
@ 07:10 pm (GMT)

Peter Bjerregaard

Hi all,
On the topic of break-in several Swedish gun writers swear to their old nickel plated steel jacketed FMJ (m/41). The reasoning being to use the hardest available projectile 'to rip irregularities off instead of covering them with soft copper'. Does this have merit? I mean, bullets are still softer than barrel material obviously.



24 Jul 2017
@ 08:51 pm (GMT)

Andrew Murray

Re: Break-in
It sounds a bit like fire lapping to some degree. Albeit a little more straight forward and perhaps less calculated.

Eventually thought any form of abrasion will wear things down. Water on stone is a great example.

I used he methods in the Accurizing book. Fortunately my barrel didn't need anything further but I'd be willing to give anything a go if the barrel had exhausted all other methods and replacement was the only other option.

25 Jul 2017
@ 01:34 pm (GMT)

Nathan Foster

Re: Break-in
What you are describing is a forming process rather than a cutting process. It does have merit. I talked about forming in the Tikka break in video.
25 Jul 2017
@ 02:11 pm (GMT)

mark whiteley

Re: Break-in
what I would advise to you Peter is to give the throat a polish before putting a couple of shots of standard ammo through and see what it does,
the rifle is going to tell you the truth about whether or not it has faults or is of a rough standard
I have heard that nickel plated projectiles can cause a fouling that is nearly impossible to remove, it can lump up near the muzzle apparently
good luck with it
regards Mark



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