Barrel wear and bullet berring length

[Grimstod]

Does a longer bullet wear out a barrel faster? You get more resistance with a longer berring surface right?

 

[CatShooter]

Does a longer bullet wear out a barrel faster? You get more resistance with a longer berring surface right?

Barrels do not ware out - they burn out at the throat.

Longer bullets mean slower velocities, which means longer exposure to flame, which means higher hear transfer, which means faster burning out of throats.

 

[Joe Salt]

Catshooter Depending On which powder you are using, could mean less heat plus how dirty it is. Like RL- 22 compared to H-4350. I think a good clean slow burning cleaner powder would be the answer. If you are shooting hot powder, I'd worry more about that than slow and clean!

Joe Salt

 

[CatShooter]

Catshooter Depending On which powder you are using, could mean less heat plus how dirty it is. Like RL- 22 compared to H-4350. I think a good clean slow burning cleaner powder would be the answer. If you are shooting hot powder, I'd worry more about that than slow and clean!

Joe Salt

When a question like that is asked, and answered, there is an assumption that other conditions are equal - max pressure, etcetera.

The difference in burning temperatures of powders has been speculated on for years, and it keeps on changing, first ball was cooler, then ball was warmer, then cooler, then warmer...

... I don't think there is a tinker's damn of diference between them, cuz no one has ever shown any difference that meet research standards.

It is all anecdotal, "My friend uses ball and I use stick, and we shoot (fill in the blank) together, and his barrel "burned out faster", (or "lasted longer"), then mine.

There is no better information than that.

Phooey on it!

 

[Shynloco]

Catshooter Depending On which powder you are using, could mean less heat plus how dirty it is. Like RL- 22 compared to H-4350. I think a good clean slow burning cleaner powder would be the answer. If you are shooting hot powder, I'd worry more about that than slow and clean!

Joe Salt

Joe,
Not sure exactly what you are referring too...the throat burn or entire barrel wear. Throat erosion occurs in every barrel, but the rifling remains virtually unscathed. Which is why some folks have their barrels rechambered very successfully, though a few inches shorter. I doubt the length of the bullet used has any effect on how long it takes a barrel throat to erode. Just my .02!

Alex

 

[Joe Salt]

shynloco I don't think a longer bullet has anything to do with wear. Its heat in the throat, I agree, so if you are using something hot you're going to get more wear. like Map Gas to propane. I've had a lot of Barrels rechambered that just keep on shooting.

joe salt

 

[chkunz]

Does a longer bullet wear out a barrel faster? You get more resistance with a longer berring surface right?

I think others have answered your question at this point but I will add one piece of info. I recently put ~6000 rounds thru an AR 223 barrel just to see how a shot or barrel looked on the target. I then had the barrel sectioned so I could look at the throat and the first couple of inches of the barrel. The lead and the initial refilling were completely gone and there were just bright streaks where the rifling had been. But within a couple of inches the rifling looked new. It was obvious why some folks rechamber a barrel. When the barrel was new I could shoot 600 yard scores in the high 190s with lots of Xs on the conventional (sling) target but by the end of the experiment the scores were about eight points lower with fewer Xs. But I was amazed at how well it shot considering how it looked. There was no seating the bullet ten thousandths of the lands because there were no lands. I do not recommend putting this many rounds thru a barrel but sometime when you remove a barrel take a look, I think it is educational.