Suppressed bolt guns... and accuracy

garandman

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How many rounds can your suppressed bolt gun fire accurately before Accuracy starts to degrade due to a dirty barrel ?

Thx.

Wasn't sure if this should go in this forum or the suppressor forum.
 
As many rounds as were brought for the day’s outing ?
Can’t say I’ve seen issues with bolt... Now if you want to talk about pistols (22/45 or 9 Glock) different story... Not so much accuracy as reliability then...
 
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I am testing a theory of just pushing a dry patch through the barrel a couple times rather than doing a full cleaning with solvent that strips All the carbon and copper out that then requires 5 to 10 fouling shots.
 
It’s a bolt gun, not a gas gun. It’s (for the most part) a sealed system, and when fired it doesn’t get a bunch of carbon saturated gases pushing the bolt back into the same receiver the next round is coming from. I personally don’t see a suppressor negatively affecting accuracy in a bolt gun.
 
It’s a bolt gun, not a gas gun. It’s (for the most part) a sealed system, and when fired it doesn’t get a bunch of carbon saturated gases pushing the bolt back into the same receiver the next round is coming from. I personally don’t see a suppressor negatively affecting accuracy in a bolt gun.

The barrel does. The barrel is a primary factor in accuracy.
 
I run my AT for about 500 rounds in either .260 or .308 and clean it with a nylon brush and a good solvent then run several wet patches till they come out pretty clean followed by a couple dry ones. That usually does the job and I haven't seen accuracy fall off.
 
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I clen mine when accuracy degrades, usually about 4-600 rounds, depending on caliber and powder used. These are ThunderBeast cans on various Bart, Krieger, Proof, etc. barrels.
 
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I clen mine when accuracy degrades, usually about 4-600 rounds, depending on caliber and powder used. These are ThunderBeast cans on various Bart, Krieger, Proof, etc. barrels.

By "clean".... Do you mean a full cleaning with bore solvent stripping out all the carbon and copper?



Do you ever just run a dry patch down the bore to get the carbon out?
 
By "clean".... Do you mean a full cleaning with bore solvent stripping out all the carbon and copper?



Do you ever just run a dry patch down the bore to get the carbon out?
By clean I mean 5-6 patches with Hoppe's let soak a few minutes, then a couple dry patches, by then the patches are clean. That's it, never have had a need for anything more.

Cleaning guns is for squares and I hate doing it, so I do it as little as possible.
 
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Over 1 k suppressed rounds on my axmc 6.5... Haven't run a patch through it yet still hammering .5 moa...I may shoot out this barrel with never putting a patch through it
 
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By "clean".... Do you mean a full cleaning with bore solvent stripping out all the carbon and copper?



Do you ever just run a dry patch down the bore to get the carbon out?

Pushing a dry patch isn't doing a damn thing. I use hoppes to get the carbon out, then switch to sweets 762 for the copper. Hoppes barely touched copper without a long soak.

I don't use any brushes, just push a wet, wait, push dry, etc. I don't bother cleaning until accuracy degrades so when I do clean I fully strip it.

I haven't seen any change in fouling with my can on. That's not part of the equation I'd worry about.
 
Pushing a dry patch isn't doing a damn thing. I use hoppes to get the carbon out, then switch to sweets 762 for the copper. Hoppes barely touched copper without a long soak.

I don't use any brushes, just push a wet, wait, push dry, etc. I don't bother cleaning until accuracy degrades so when I do clean I fully strip it.

I haven't seen any change in fouling with my can on. That's not part of the equation I'd worry about.


After a good cleaning, how many rounds to "foul" the barrel again? Or does it shoot same PoI, w/ tight groups without fouling shots?
 
I am testing a theory of just pushing a dry patch through the barrel a couple times rather than doing a full cleaning with solvent that strips All the carbon and copper out that then requires 5 to 10 fouling shots.

Dan Flowers, The Ballistic Edge, (after a successful military career) did and published a study on cleaning levels, and leaving fouling in a barrel, relative to sniper accuracy in both military and police weapons systems.

A number of people have followed his study lines, and boresnaking only, fired 8-10,000 762 rounds with no appreciable loss of accuracy in combat zones and competitions, until the barrel wear rendered it unserviceable.

Battlelab at Ft. Benning also did a comparable study, as did a contractor group from building 4.

The results were comparable in each study, however, all are barrel dependent on the quality of the barrel to begin with. Good barrel, good result, mediocre barrel, mediocre results, crap barrel, crap results.

Any barrel requiring 5-10 rounds to settle after cleaning, was considered a below sub-standard barrel, and would be replaced asap.

Combat zone weapons during a tour, that could not be immediately replaced, had acceptable fouling levels that held work standards until tours end, when they were replaced.

Your theory has been examined before and found very barrel quality dependent with equally varied results, great barrel, great results, shit barrel, shit result.

100 Hide posting answers will vary depending on barrel quality.

Below is a screen shot from an earlier training venue featuring Dan Flowers as an instructor, from 2013 Snipershide.
Screenshot_20190622-210606_Chrome.jpg


Every generation it seems has to rediscover fire, and recreate the wheel.
 
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Dan Flowers, The Ballistic Edge, (after a successful military career) did and published a study on cleaning levels, and leaving fouling in a barrel, relative to sniper accuracy in both military and police weapons systems.

A number of people have followed his study lines, and boresnaking only, fired 8-10,000 762 rounds with no appreciable loss of accuracy in combat zones and competitions, until the barrel wear rendered it unserviceable.


Every generation it seems has to rediscover fire, and recreate the wheel.


Thanx. Helpful. So basically I am hearing my theory has some merit and may work out… if I'm working with a quality barrel...

Any idea of # of rounds fired btwn bore-snakings?

Mine is an aftermarket barrel from Southern Precision Rifle.
 
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Most boresnaked daily in work zones to remove any loose fouling, dust, dirt, junk,
Or in high humidity zones, to remove daily moisture seep,
Generally after each range training session, and the day after, if there was to be a non use period.
In extreme temperature change scenarios, 40° in a day, where moisture beaded on the metal, twice daily.

Several rifles went a whole year boresnaked only and never notably lost accuracy.
Again, it was barrel dependent. We lost some barrels at 3500-3800 rounds, some 5-6000, and some 7-8000, one barrel went 12,000. One factory hammer forged steyr barrel (Austrian WEGA - federal police), went 28,000 rounds. None of us wanted to believe that, but they had accurate records and the same guy had it issued to him new and used it most of his career.
Again, it is very barrel dependent.

Personally, the longest I went was 1200 rounds on a test rifle. The general average was 300 rounds with m118 ball or m852 match. Some of the longevity can depend on the powders fouling capabilities for example, the early m16 ball powder problems in 1965-66 Vietnam.

There are many variables. But, you will know when you hit that point, your sub moa system becomes moa plus during a shooting session.
 
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There are many variables. But, you will know when you hit that point, your sub moa system becomes moa plus during a shooting session.

Gotcha. Thats whats happenned twice now. At about 50 rounds of 41~ gr of H4350 fired.

Ran coupla dry patches today. Will check it next range session.

U been really helpful. Thx.
 
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I find a little carbon lock on QD suppressors help with accuracy. I usually only ever clean the chamber regularly and punch the bore once or twice a year if I’m shooting regularly. Or if I’m know I’m not going to shoot for a while to prevent corrosion