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GAP talked my buddy out of a 300 RUM

 
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  #50  
Old 12-20-2011, 06:18 PM
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Re: GAP talked my buddy out of a 300 RUM

Quote:
Originally Posted by WildRose View Post
The primary source of heat is the same for semis, full auto, and bolt action rifles.

There is a far greater and more rapid build up/increase in heat however due to rate of fire as there's practicaly no time for the barrel to cool between shots with rapid firing in semi or on full auto at least in comparison to a bolt action rifle.

It's very hard under the best of circumstances to get off more than 30 rounds in a single minute with a BA, whereas 200rp min is easy with a semi, and can be done in 10 seconds or less on full auto.

With so much greater and rapid heat build up in the semis and machine guns you just can't make any sort of realistic comparison between them and bolt action sporting rifles.

Not an Exact Comparison Correct, but there cartridges are 53,000 PSI max, Not the higher pressures of the WSM's, RUM's, and Wildcats were talking about here which run up to 69,000 in some instances.

Im merely stating that if they were finding an Improvement then we could expect to also find one. They are not so Its up to Shooters to Come to their own conclusions. And frankly most of us dont keep track of shots fired well enough to make the comparison. If it was 20% more life your talking the difference of 800 and 960 in a RUM ??? worth it???????
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  #51  
Old 12-20-2011, 08:04 PM
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Re: GAP talked my buddy out of a 300 RUM

There are people on this Forum in the know that contend that the wear and tear on a throat is much more dependent on the rate of repetitive fire without allowing the barrel to cool between shots, than it is on the cartridge's chamber pressure at 50,000 versus 65,000psi. Fiftydriver has sounded in on this topic a number of times while discussing barrel life with his Allen Magnums and other cartridges.

One of the links I provided in a prior post includes the statement of a competition shooter who has doubled the life of his melonite-treated barrel and is still using that barrel in competition with 1/4 moa accuracy after ~5000 rounds.

So I'm curious; how many rifle owners do you know that have had their barrel melonite treated and then shot their hunting rifle enough times to wear the bore out? You've hinted that you've not heard of experiences of increased bore life coming from melonite treated bores, but have you really had exposure to a number of clients or acquaintances who've melonite treated barrels on their bolt action rifles and then shot them to the point of needing to re-barrel. As recently as melonite treatment has become available to individual firearm owners, I'm trying to understand if your comments are based on intuition or gut feelings about the matter - or if you've been informed by others who've been disappointed with the life of their melonite treated barrels.

I hadn't even heard of the option of melonite treating my barrels until about 18 months ago.

One of the guys with Krieger barrels spoke with Rich (user name elkaholic) within the past month, and told him he thought that if done correctly, melonite treatment was good/worthwhile. Custom rifle barrel manufacturers ought to know a little about the melonite treatment process and the associated benefits.

So are your comments as to the lack of merit in melonite treatment based on gut feelings, or are they due to some negative feedback from owners of melonite treated barrels? I'd like to know, because I'm planning on spending the $100 in the relatively near future, but would rather spend the money on gas if you have substantial factual evidence that melonite treatment of the barrel results in no meaningful increase in barrel life.

Last edited by phorwath; 12-20-2011 at 10:37 PM.
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  #52  
Old 12-20-2011, 09:35 PM
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Re: GAP talked my buddy out of a 300 RUM

Quote:
Originally Posted by a10xrifle View Post
Not an Exact Comparison Correct, but there cartridges are 53,000 PSI max, Not the higher pressures of the WSM's, RUM's, and Wildcats were talking about here which run up to 69,000 in some instances.

Im merely stating that if they were finding an Improvement then we could expect to also find one. They are not so Its up to Shooters to Come to their own conclusions. And frankly most of us dont keep track of shots fired well enough to make the comparison. If it was 20% more life your talking the difference of 800 and 960 in a RUM ??? worth it???????
You continue comparing flame throwers to a single match.

Heat is the killer of barrels. The more rapidly that heat is built up and the longer it is maintained the shorter the life of the barrel.

There is no comparison of a bolt action sporting rifle to rapid fire semis or full autos in this regard. None.
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  #53  
Old 12-20-2011, 10:20 PM
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Re: GAP talked my buddy out of a 300 RUM

Great,great discussion,love it. Learning more and more!
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  #54  
Old 12-21-2011, 12:02 AM
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Location: New Castle colorado
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Re: GAP talked my buddy out of a 300 RUM

I'm curious about melonite treatment of barrels as well. I spoke with one of the guys at BAT actions today. He was telling me of the benefits of this treatment for actions, and suggested it would extend the life of barrels, but that you wanted to have the barrel broken in first-100 rounds.
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  #55  
Old 12-21-2011, 01:01 AM
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Join Date: Dec 2002
Location: N.Kansas City, MO
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Re: GAP talked my buddy out of a 300 RUM

Love the Internet, Im not bashing Melonite, Id love to have a barrel that lasted longer, the longer the better especially if its $100. Its great on bolts and recievers as its hardness makes them smoothe as glass.

Melonite is still surface hardness the heat is still there and the metal will still make the thermal changes. Some of you may know that FN hard Chromes the bores of its SPR rifles and Winchester tried it with there super short mags intended for Varmit shooting. Ive had the opurtunity to replace alot of those barrels and they all were wore out in the same fashion Heat erosion but with the added twist of flaking chrome. While this is different and not the same as Melonite it was done for the same reasons. The Military and the Fed Goverment has alot of gentlemen on the payroll that test everything. Why would they not be jumping all over the melonite barrel gig for their long range rifles if they were going to last alot longer. Evrn iff it didnt work out for the Bulet Hoses???

I do shoot close to 8,000 rounds a year, this year will be extra heavy with the PRS in full swing and practice for the F Class Worlds, Ill spin up a practice barrel and give her hell. I know that my barrels crap out between 2300-2800 if this one goes past 3000 I will be the first to jump for joy.

I know to some of you Im just a Tacticool Police Paper Puncher, ( I think thats what someone here called me) but thats really not the case at all. I despize shooting at anything less than 400 yards and I actully cannot remember the last time I shot a 308 that was not work related.

All of you guys have a Merry Christmas, Im flying out west for the Holidays and will be without the CPU so you guys have fun. Ill check back in in a week or so.

ScenarShooter, See you in the Spring.
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  #56  
Old 12-21-2011, 01:44 AM
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Re: GAP talked my buddy out of a 300 RUM

I appreciate your feedback friend.
Happy Holidays to all.
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