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Can shooting long bullet give more bbl life

 
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  #8  
Old 08-29-2011, 12:17 PM
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Re: Can shooting long bullet give more bbl life

The 3,000 round figure for this combo is right in line with the Easter Bunny, Santa Claus and an honest poliotician; a figment of someone's imagination. unless you're calling a two or three MOA barrel still viable, no, it'll be gone long before you get anywhere near that figure. I'd call it 1,000 rounds or thereabouts before losing the .5 MOA mark. Where you call a barrel "done" is up to the individual shooter, but there will be a noticable degradation in accuracy and a drastic increase in flyers by this point.

As the Ramshot, double based powders generally run higher flame temps than do single based propellants. This can equate to shorter barrel life in some cases, and in others there doesn't seem to be much difference. All depends on the individual comparison. All other things considered, you won't see as much difference in barrel life caused by powders as you will between those caused by bullet weight and other factors.
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Old 08-29-2011, 12:25 PM
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Re: Can shooting long bullet give more bbl life

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Originally Posted by Kevin Thomas View Post
The 3,000 round figure for this combo is right in line with the Easter Bunny, Santa Claus and an honest poliotician; a figment of someone's imagination. unless you're calling a two or three MOA barrel still viable, no, it'll be gone long before you get anywhere near that figure. I'd call it 1,000 rounds or thereabouts before losing the .5 MOA mark. Where you call a barrel "done" is up to the individual shooter, but there will be a noticable degradation in accuracy and a drastic increase in flyers by this point.

As the Ramshot, double based powders generally run higher flame temps than do single based propellants. This can equate to shorter barrel life in some cases, and in others there doesn't seem to be much difference. All depends on the individual comparison. All other things considered, you won't see as much difference in barrel life caused by powders as you will between those caused by bullet weight and other factors.
I kind of figured that was some hooey ! While waiting for this bbl I'm re-thinking having it chambered for 6x284. How much better bbl life with 243 AI ?
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Old 08-29-2011, 12:32 PM
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Re: Can shooting long bullet give more bbl life

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Originally Posted by Kevin Thomas View Post
The 3,000 round figure for this combo is right in line with the Easter Bunny, Santa Claus and an honest poliotician; a figment of someone's imagination....
^^^^ Now that made me laugh, thanks Kevin, & I fully agree, minute of watermellon is probably all that's going to be left after 3k rounds... I AM using Magnum (as well as other shooters), it is a wonderful powder for the 6-284, I recall my load testing from 54.5 up to 56.5 grains (5 loads) all grouping under .500 at 100 yds, thats pretty consistant in my book, in fact the last two 56.0 & 56.5 both going sub .300. As far as bbl life goes... honestly, they are a consumable item.... kinda comes with the territory.
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Old 08-29-2011, 12:50 PM
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Re: Can shooting long bullet give more bbl life

Iron worker,

Fairly simple set of tradeoffs here, and we have to start with the realization that there is no perfect cartrdige. They're all a seeries of tradeoffs, and we each have to decide where we want to put the priorities. Long barrel life means reduced performance in terms of velocity and and energy, higher levels of performance means you sacrifice some longevity. A 22 Long Rifle is easily the most efficient 22 caliber cartridge, while the 22-250 or 220 Swift are the least. Now if we want to whack a groundhog at 450+, which is the most effective? Efficiency and effectivness are not the same.

The 243AI would/should give better barrel life than a 6/284, but again it comes down to what you're using through it. I wouldn't expect to see much more than 1,500 rounds or so with this one, if we're still talking about the same weight bullets. Pick the level of performance you want, and then just accept the fact that as Outlaw says, barrels are perishable tooling.
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Old 08-29-2011, 01:06 PM
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Re: Can shooting long bullet give more bbl life

Outlaw,

I know a grand total of one guy at Sierra that I know has ever worked with a 6/284, and I seriously doubt he's ever worn out a barrel. Hey, I know what you mean. Barrels are threaded on at least one end, kind like they were meant to be replaced from time to time!

Can't get too worked up about the barrel heating issue, either. Had one of my 308s pretty damned hot four different times this past Sunday. Mid range match at St Louis Bench Rest club. Each of the four matches consisted of 22 shots in not more than 22 minutes, and I usually try to wrap it up in less that 10 to get away from too many wind changes. Clear blue sky, bright sunlight and very high temps all combined with the shooting to make the barrel waaaay too hot to touch. Only way to get around that one is to build it, put it in the safe and leave it there. Otherwise, it's gonna get hot from time to time. Oh well. Not the first barrel I've had on that particular action and it sure won't be the last.
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Old 08-29-2011, 01:06 PM
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Re: Can shooting long bullet give more bbl life

Got it. I already have the dies ,so 6x284 lives. Hey Outlaw what kind of velocities were you getting with those charges you listed ?
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Old 08-29-2011, 02:17 PM
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Re: Can shooting long bullet give more bbl life

You would have to ask me that!! I do know that at 54.5 you're looking at a measly 3150 (got to start somewhere), I cannot remember for some reason where the velocity is at 56.5 (Hey, it's Monday) i'll try to get that to you.

Kevin,

You're correct, not the first bbl for me either, next one will be 6-284 also... horse power is addicting! not what a fella would want in a tactical match for sure, but man 'o' man are they flat shootin..
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