Bore rust/corrosion removal?

[Peter Laidler]

What you should ALWAYS remember Andy is that removal of any corrosion WILL mean the removal of material. And in this case, it WILL mean the removal of material from the structure of the bore.

As JBS says - and it's 1000% correct, just because a bore is like a sewer pipe don't mean that it can't shoot straight. If the bullet twists and gas can't escape past it as it's winding its way up the bore, you're halfway home. Some sniper rifles would be shot-out, looked crap and barely pass the gauge testing criteria but would shoot like little dreams while others looked and gauged up good but wouldn't hit a cows arse with a cricket bat.

The final arbiter should always be an accuracy test