Hi everyone my name is Tom. I recently bought a browning x-bolt max Target varmint. I was wondering what everyone thinks about barrel break in and what steps I should take. Thanks
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Someone recommended to post in the bolt action section.2 same threads???
Clean it. Shoot 20. Clean again. Shoot till groups open up (200-800 depending on caliber and barrel quality)
Sensible.This. Unless it’s copper fouling bad then I’ll go to 100 until another cleaning. If it’s coppering a lot I’ll clean every 20 until fouling goes away.
While you’re at it...Can you also start a “I’m looking for advice for a sub $1,000 optic for use at 1,000yds that will help me get sub MOA results on my kitchen-built AR while shooting wolf FMJ ammo” thread?I was going to read what everyone had to say... but I’ll just wait until tomorrow and start up a fresh barrel break in thread. This information goes stale quick.
Just bought a Barrett MRAD with barrels in 300-WM and 338-L ... broke in the 300-WM with 1-clean (3x), then 2-clean-3-clean-5-clean and it was fine, but a pain in the butt to do at a range bench. On all cleanings, no fouling and clean swabs within a few patches. At $5,000 for the rifle and $1,300 for each additional barrel, I should expect a bore that's smoother than a baby's behind. I've noticed this is the case on all my high-quality rifles where I've used this process (MPA 300-WM, LWRCI REPR MKII 6.5, Tikka T3x 6.5, etc.). The cleanings at the range all just seemed to be "non-events".I don't think it makes sense in theory or practice to "break-in" a barrel as a prophylactic against problems that may not even exist and aren't likely to be corrected by a "break-in" if they do.
Consider this gross over simplification of what sort of barrel you might have:
1. Dimensionally accurate, beautifully machined - should shoot well, foul little
2. Dimensionally accurate, "OK" machine work - should shoot well, might give some trouble with fouling, might get better as you shoot
3. Dimensionally inaccurate, "who cares" machine work - might be able to foul it enough to shoot decently if it's "close," but generally slag
What will "break in" accomplish? For that first group of barrels, nothing. Same for the third. For the second group, the normal answer given is to remove all traces of fouling between shots to ensure the bullet is traveling down a clean bore so that it can essentially polish out rough spots in the rifling. If that's what you're after, why not just lap it? However, should that be your first course of action?
I'd argue no - see how it shoots. Where's the harm? If you want to follow a near religious, zen approved break-in procedure, you can do so at round 1 or round 100. Might as well see if the darn thing merits the attention before you invest hours of your life and the life of your bore that you cannot get back.
Nobody is saying nothing happens. They’re just saying that what happens is going to happen whether you have fun your first day out, or waste the day with shoot-n-clean.I think it's hard to believe that nothing happens during a break-in session. At least two things are happening; one good, and one bad.
First the good. Throat erosion will reduce some machining confluences where the rifling and throat leade intersect. This is a positive, but it's also minimal.
The not so good. Throat erosion is taking place in the first place. Bore life is measured in increments of throat erosion, and whenever that's happening, remaining round count is counting down.
Between the two, I'll settle for skipping the process.
Greg
1 shot, clean x 5
3 shot, clean x 3
5 shot, clean x 2
See what the barrel cleaning patches look like.
Been doing it this was since ‘92. People say, “it’s a waste of ammo.” It’s only a “waste” if you don’t learn anything from it
One of these days give it a try. You’ll find that you end up at the exact same place you do now. Break-ins are a giant waste of time.
1 shot, clean x 5
3 shot, clean x 3
5 shot, clean x 2
See what the barrel cleaning patches look like.
Been doing it this was since ‘92. People say, “it’s a waste of ammo.” It’s only a “waste” if you don’t learn anything from it
Clean it. Shoot 20. Clean again. Shoot till groups open up (200-800 depending on caliber and barrel quality)
oh i'm with you there. carbon rings or other things causing issuesI don’t subscribe to this anymore. For a couple reasons:
Have had problems not accuracy related show up from not cleaning (heavy bolt, but groups still good for example)
And, if I don’t wait for groups to open up to clean, guess what......they never open up. Would be like waiting for engine wear to begin before changing oil. Change it before it’s a problem and it never gets to the problem point.
How many barrels have you not done that to and seen a different result? If not a lot, your technique means little.
It would be like saying, every time I’m about to pull out of the driveway for the last 20 years, I tap my roof 3 times and I haven’t had and accident. Did you not have an accident because of them taps, or did you not have an accident and coincidentally performed the taps?
It could absolutely be a waste of ammo and you wouldn’t know it unless you have data ri back it up.