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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel contour
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<blockquote data-quote="jrock" data-source="post: 2399347" data-attributes="member: 78569"><p>Depends on heat input as well. I have a #1 Krieger barrel on a 6mm Dasher and I can put a 5 round clip through it as fast as I can shoot accurately and have zero POI change. I haven't tested it beyond 5 rounds. I have a Vanguard series 1 in .243 that would start to walk after 4 rounds. Barrel is probably .63" at muzzle. I had a Tikka T3x lite 300 win mag come through the shop for muzzle threading and it was .63" at the muzzle. I have a 338 Norma Mag with a Krieger #6 and it has no POI change after the 5 round mag is emptied. Other factory sorters I've shot appear be good for about 3 to 4 rounds before walking. I think quality of barrel helps out with this as mentioned above. </p><p></p><p>As for weight, the smaller steel shapes are lighter and they cost a whole lot less. I think CF barrels have another plus when it comes to hunting with a suppressor. </p><p></p><p>I think proper bedding and floating of the action and barrel helps with POI change.</p><p></p><p>I do have a good story about heat in a carbon barrel. I was at the range and a gentleman who I've seen several times showed up with his PRS gun sporting a new CF barrel. He proceeded to put about 50 rounds down range at some 500 yard targets. Only breaking to reload the 10 round mag. At the end, he was super impressed that his barrel was barely warm to the touch. He proceeded to walk down the line telling everyone about it. If CF barrels dissipate heat faster than steel, then I would have figured his barrel should have been boiling water, not warm to the touch after 50 rounds. That's my two cents</p><p></p><p>I feel everyone should own a barrel cooler. Use it after a 3 shot group of a minute or two and you'll never have to deal with POI shift due to heat.</p></blockquote><p></p>
[QUOTE="jrock, post: 2399347, member: 78569"] Depends on heat input as well. I have a #1 Krieger barrel on a 6mm Dasher and I can put a 5 round clip through it as fast as I can shoot accurately and have zero POI change. I haven't tested it beyond 5 rounds. I have a Vanguard series 1 in .243 that would start to walk after 4 rounds. Barrel is probably .63" at muzzle. I had a Tikka T3x lite 300 win mag come through the shop for muzzle threading and it was .63" at the muzzle. I have a 338 Norma Mag with a Krieger #6 and it has no POI change after the 5 round mag is emptied. Other factory sorters I've shot appear be good for about 3 to 4 rounds before walking. I think quality of barrel helps out with this as mentioned above. As for weight, the smaller steel shapes are lighter and they cost a whole lot less. I think CF barrels have another plus when it comes to hunting with a suppressor. I think proper bedding and floating of the action and barrel helps with POI change. I do have a good story about heat in a carbon barrel. I was at the range and a gentleman who I've seen several times showed up with his PRS gun sporting a new CF barrel. He proceeded to put about 50 rounds down range at some 500 yard targets. Only breaking to reload the 10 round mag. At the end, he was super impressed that his barrel was barely warm to the touch. He proceeded to walk down the line telling everyone about it. If CF barrels dissipate heat faster than steel, then I would have figured his barrel should have been boiling water, not warm to the touch after 50 rounds. That's my two cents I feel everyone should own a barrel cooler. Use it after a 3 shot group of a minute or two and you'll never have to deal with POI shift due to heat. [/QUOTE]
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