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Hunting
Long Range Hunting & Shooting
6.5-7mm prc
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<blockquote data-quote="tracybartlein" data-source="post: 2812310" data-attributes="member: 12065"><p>A 6.5CM on a ammunition pressure test barrel will only go about 1700 rounds. When they see the pressure swing and a velocity loss at the same time then they know they are on borrowed time with the barrel and will pull it. Remember they are loading a spec bullet at a spec velocity for box ammo. </p><p></p><p>Shooting a accuracy test barrel or you or I running a gun in a match in 6.5CM we can chase the tune and I'll say tops your looking at 3k rounds. That's it. </p><p></p><p>6.5PRC on ammunition pressure test barrels....if they are nice to the barrel (that's how it was put to me) the most they get out of them is 900 rounds. They've burnt those barrels up in a little over 400 rounds. I'll say an average is around 600ish rounds for barrel life (peak accuracy). </p><p></p><p>Guys shooting a 6.5WSM in F class ( my buddy ran one and we made him 3 barrels at one time)...each barrel died right around 550 rounds. Peak accuracy was gone and or the barrel wouldn't hold accuracy long enough to put 60-80 rounds on it in a day for a match. Had to pull the barrel. Now on a hunting rifle...yes you could get more out of it. </p><p></p><p>I've seen 26 Nosler test barrels only make it to 449 rounds for barrel life before they started having issues and had to throw the barrel away. I've got pictures and round count data from the company that did the work for reloading data. When they sent me pictures of the throat area of the chamber they asked me to guess the caliber and round count. I said 300wm and 800 rounds. They said nope...26 Nosler at around 110 or 140ish rounds. I forget which it was. </p><p></p><p>Yes sometimes it's the guy overloading / hot rodding it as you/we say that doesn't help anything. </p><p></p><p>Not taking care of it (properly cleaning it or intervals between cleanings or getting it too hot) also works against you. </p><p></p><p>Watch the powder you load...double based powders will burn the barrel faster as well. I only load single based powders. The trade of with double based powders is yes you can get a higher velocity at a normal pressure but the trade off is the powder typically burns at a higher flame temperature....that will work against you as well. </p><p></p><p>About a year ago a bullet/ammo maker working on a new reloading manual told me they omitted 26 Nosler from they're loading manual. They couldn't get enough rounds on the barrel with it to come up with reliable loading data to put it in the book. So they just left it out. When you hear stuff like that...makes you take a step back at times and take a hard look at things.</p></blockquote><p></p>
[QUOTE="tracybartlein, post: 2812310, member: 12065"] A 6.5CM on a ammunition pressure test barrel will only go about 1700 rounds. When they see the pressure swing and a velocity loss at the same time then they know they are on borrowed time with the barrel and will pull it. Remember they are loading a spec bullet at a spec velocity for box ammo. Shooting a accuracy test barrel or you or I running a gun in a match in 6.5CM we can chase the tune and I'll say tops your looking at 3k rounds. That's it. 6.5PRC on ammunition pressure test barrels....if they are nice to the barrel (that's how it was put to me) the most they get out of them is 900 rounds. They've burnt those barrels up in a little over 400 rounds. I'll say an average is around 600ish rounds for barrel life (peak accuracy). Guys shooting a 6.5WSM in F class ( my buddy ran one and we made him 3 barrels at one time)...each barrel died right around 550 rounds. Peak accuracy was gone and or the barrel wouldn't hold accuracy long enough to put 60-80 rounds on it in a day for a match. Had to pull the barrel. Now on a hunting rifle...yes you could get more out of it. I've seen 26 Nosler test barrels only make it to 449 rounds for barrel life before they started having issues and had to throw the barrel away. I've got pictures and round count data from the company that did the work for reloading data. When they sent me pictures of the throat area of the chamber they asked me to guess the caliber and round count. I said 300wm and 800 rounds. They said nope...26 Nosler at around 110 or 140ish rounds. I forget which it was. Yes sometimes it's the guy overloading / hot rodding it as you/we say that doesn't help anything. Not taking care of it (properly cleaning it or intervals between cleanings or getting it too hot) also works against you. Watch the powder you load...double based powders will burn the barrel faster as well. I only load single based powders. The trade of with double based powders is yes you can get a higher velocity at a normal pressure but the trade off is the powder typically burns at a higher flame temperature....that will work against you as well. About a year ago a bullet/ammo maker working on a new reloading manual told me they omitted 26 Nosler from they're loading manual. They couldn't get enough rounds on the barrel with it to come up with reliable loading data to put it in the book. So they just left it out. When you hear stuff like that...makes you take a step back at times and take a hard look at things. [/QUOTE]
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