Originally Posted by X-man
Factory rifle...why bother?
With a precision match barrel..why not?
I shoot one clean one for the first two or 3 rounds.
The first round always jacket fouls heavily.
The second round usually fouls less and on the 3rd round there is no fouling to be had.
Does it matter? I don't know. I think my barrels come up to peak accuracy quicker this way, but I admit it is hard to tell.
My precision barrels never jacket foul, but I know guys that say the same thing that just shoot their rifles.
I recently bought a Brand New Factory Remington 5R Rifle in .300 Winchester Magnum. I bore sighted it and went to the range. At 100m (we're in meters over here in New Zealand, however, when it comes to ballistics I work in both imperial and metric measurements) it straight away hit the bull! The next three shots I fired dropped 6" to just clip the bottom of the A4 piece of paper I was shooting at. My mate, who was with me, claimed that was the "Fouling Shot"!
My goodness, "Fouling Shot" 6" away from the other shots at only 100 meters! I was working on a rifle that I hoped would shoot out to 600m and beyond. 6" linear out to 600m, that's 36" 'out' at that range, 3 FEET, that's one heck of a big animal I'd have to be shooting at to hit it on the first shot at that range, and then there's the other dilemma, whereby, if it was that big I'd be hopelessly "Under Gunned!"
I started researching this "Fouling Shot" and learnt that if your barrel is prone to copper build-up, due to it being new and not broken in, then that will throw the first shot on a clean barrel until it fouls and the consecutive shots will tend to group together better!
The secret is to break the barrel in by firing a shot, then cleaning "ALL" the copper out, then firing another and cleaning etc. until the barrel fouls less and less until, hopefully, doesn't really foul at all!
I rammed the borescope up my barrel and learnt that the first "third" of my barrel, immediately ahead of the chamber, was relatively clean and un fouled, same as the last third just before the muzzle, however, the middle third gets caked heavily with copper and I'm trying to desperately get that to clean with Bore Paste and shot, clean, shot etc.
So, bottom line is, I'm up to 4 shots/cleans now and I'm desperately hoping it will matter, "IF" I ever get it to stop fouling! (I say IF because there's no sign yet of the copper build-up abating!)
The alternate (Heaven Forbid) is to fire a fouling shot into the ground, immediately upon exiting my truck, as soon as I reach my hunting ground and risk scaring everything away... Beggar That!!!