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Join the contest SubscribeYou had less than 0.001” throat erosion per 100 rds? That’s nuts. Is it your powder? Long neck of the BRA? Only shoot 1 round then water cool the barrel? Loli dont check or adjust anything until theres a problem...im at 1100 rounds in my 6BRA and am going to play with some 109s so i checked this morning....ive lost .008 off the lands sense new...i started at .005 off the lands with a 105 hybrid now im at .013 off now and shoots just as good as when i started.
You had less than 0.001” throat erosion per 100 rds? That’s nuts. Is it your powder? Long neck of the BRA? Only shoot 1 round then water cool the barrel? Lol
Now that´s a good one.
So you are always on track with the ongoing erosion and don´t have to worry to much about false measurements.
Because that´s what happened to me yesterday, I had a hard time finding the lands with my bullet.
But now my thinking is how to prevent erosion if possible.
Running heavier bullets at a lower velocity and with powder that won´t burn very hot.
How do I find out the temperature a load produces?
interesting. I just hit 1000 on my xcal 65CM MTU and remeasured. I was .195 when it was new. and Im only .198/9 now. either im not measuring correctly (most likely) or my hot high pressure rounds are something magical.
for most people its a measuring issue or cleanliness issue
the barrel needs to be pretty clean because carbon in areas will cause short measurements, and most "gun cleaners" suck something fierce at actually getting carbon out...ive seen really dirty barrels deep cleaned and the lands be found .050"+ further away than the owner thought they were
also depends heavily on the users rate of fire, and how much he torches the barrel...really hot loads fired slowly wont wear as much as light loads fired rapidly, etc
ive measured before leaving for a 2 day match on a clean barrel, then fired 250-300 rounds, pushed a couple wet then a couple dry patches (what a lot of people consider "cleaning"), remeasured and gotten a shorter measurement than original...re-clean the barrel good, checked with a scope, and then the measurement is .008 longer than original
couple nights ago, i wetted this chamber w/ 75-100 rounds to clean the neck out...with wipe out + accelerator for 45 min, probably 5-6 wet patches over that time, then pushed a nylon brush for 10 strokes, spun it for ~60sec ...and looked with a scope...
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then i wetted a felt patch with vinegar+h2o2, spun it in the throat for 30 seconds...this isn’t uncommon for what I’ve seen in others either
View attachment 7374121
of course you will always have barrel to barrel variation in caliber, loads, and steel...so its possible you scored a great one and it lasts for forever lol win win
The other problem with this discussion is a lot of folks that tell you they don't change their seating depth for the life of the barrel don't do any periodic diagnostic testing. And a lot them are middle of the pack shooters. So who knows what their load is actually doing?
Kinda reminds me of the 6.5 saum shenanigans.Does he load his bullets backwards too?
I remember hanging out at the hotel the night before a regional finale a couple of years ago. We were all sitting around talking. One of the guys from our area was thinking about switching to a different cartridge. One of the shooters from the next state over, an extremely good shooter, was telling him about his 6XC. My buddy was getting really excited about it. He was telling him how he was getting 3000 to 2500rds out of his barrels. And he's doing it on Xcaliber barrels too. Like they're the hidden secret. I was telling him, "dude, you always hear shit like this. Assuming it's going to work out like that for you, then you try it and it never does." But my buddy is all primed for the 6XC.
And then after the match we find out ol boy got a lathe in his shop. And he's setting the barrel back every 500 rounds. Flash forward three years later this guy no longer shoots XC.
There's always some some information that doesn't come with the hype that guys like to spread. Swag'ing a load on your 10th BRA barrel doesn't mean that's how you actually do load development. And this is just the type of big talk that guys like to tell someone while they're standing around the back of the truck. Kernal of truth to it, in specific cases, but then don't provide that context while you crack another sunflower seed with your teeth, staring off into the distance, while trying to wear your best nonchalant, cavalier face
Does he load his bullets backwards too?
I remember hanging out at the hotel the night before a regional finale a couple of years ago. We were all sitting around talking. One of the guys from our area was thinking about switching to a different cartridge. One of the shooters from the next state over, an extremely good shooter, was telling him about his 6XC. My buddy was getting really excited about it. He was telling him how he was getting 3000 to 2500rds out of his barrels. And he's doing it on Xcaliber barrels too. Like they're the hidden secret. I was telling him, "dude, you always hear shit like this. Assuming it's going to work out like that for you, then you try it and it never does." But my buddy is all primed for the 6XC.
And then after the match we find out ol boy got a lathe in his shop. And he's setting the barrel back every 500 rounds. Flash forward three years later this guy no longer shoots XC.
There's always some some information that doesn't come with the hype that guys like to spread. Swag'ing a load on your 10th BRA barrel doesn't mean that's how you actually do load development. And this is just the type of big talk that guys like to tell someone while they're standing around the back of the truck. Kernal of truth to it, in specific cases, but then don't provide that context while you crack another sunflower seed with your teeth, staring off into the distance, while trying to wear your best nonchalant, cavalier face. "Yeah man, I just set it n' forget it"
He could probably load them backwards and still outshoot most of us ! I think he knows how to win a match or two and not get lost down a rabbit hole.
I think the point is you don't need to do seating depth tests every few hundred rounds to win national level matches and doing seating depth testing won't on its own move you from middle of the pack to the podium.
He cleans his chamber/throat. He also arrives at matches sometimes with barely a 1MOA gun.Jake Vibbert uses the same load on every barrel, he doesn't load to a seating depth and doesn't change his load at all over the life of a barrel. I also believe he doesn't even clean his barrel during its life. He seems to do pretty well.