Fixing to get a new barrel for my 6.5cm
- Thread starter phillip61
- Start date
i currently shoot a proof carbon barrel in 6.5 and agree with this. I've never seen the proof heat up like my steel barrels do.
Barrel life is not any shorter than a steel barrel in the same caliber. One could argue the better heat management might extend the life as well, but I have no data to back that up other than knowing heat is the enemy.
well, I can get a Bartlien Barrel for about $360.00. The carbon fiber is $729.00. I had them on the phone, they have a 24" 6.5CM with a 1:8 twist in stock, I hung up before I ordered it so I could think about it a little more. I don't know that I'm worried about the weight of the rifle, I'm just trying to figure out are they "worth" twice what a regular barrel sells for?
- Feb 16, 2017
- 478
- 427
+1, from now on if carbon fits the application the extra coin is worth it and they look legit!
If you don't need the weight savings then no, there's nothing the proof is going to do that a normal steel barrel won't do except maybe last longer but there's no proof Im aware of so I t's just theoretical.
I went with the proof becaue I use my 6.5 creedmoor as my go to hunting rifle and that weight I saved over the previous barrel was well welcomed trudging around 9,000+ ft asl. Plus they are pretty sexy.
I shoot PRS currently with my proof, it’s nice to carry around matches all day, but my rifle is already on the heavy side even with the proof. That said, I do plan to go back to a steel barrel for some help with recoil reduction. With a steel barrel it will be around 21lbs.
I think the proof only offers an advantage if for some reason your rig ends up heavier than you’d like. Which was my initial reason to buy one, but I’ve found I really don’t mind the weight when it comes to everything but carrying it around.
I’m not sure I understand the logic behind POI shift when shooting off of those things. I shoot off them regularly and don’t experience any POI shift. Why would the contour of your barrel cause a poi shift depending on the surface your rifle is shot off of?
This. Shoot a series of dots at 100 yards from different positions. It will reveal a lot.
The heat mitigation and weight seems to be the real benefits of the proof barrels.
Taking all the weight out of the front of the gun makes it very enjoyable to carry (although there is an argument to make about ease of shooting a rifle with more weight at the front)
And the heat mitigation is very impressive. I’ve shot a 308 ar all day, and then put 20 rounds though it in under 90 seconds and the barrel was completely comfortable to hold.
Taking all the weight out of the front of the gun makes it very enjoyable to carry (although there is an argument to make about ease of shooting a rifle with more weight at the front)
And the heat mitigation is very impressive. I’ve shot a 308 ar all day, and then put 20 rounds though it in under 90 seconds and the barrel was completely comfortable to hold.
I own 3 proof carbon barrel rifles on hunting rifles and very happy with them. Verry very accurate rifles. We just re barreled my wife's Bartlien med palma match rifle to a proof carbon barrel and she likes it and accuracy is superb. My gun smith just spun a Proof stainless barrel similar to a heavy palma barrel and his groups at 950 yards are insane. I'm sold on Proof no matter what barrel you order from them.
Carbon fiber is a poor conductor of heat, at least across the horizontal dimensions of the fibers (the way they are wrapped around barrels). I bet that the internal steel barrel core is every bit as hot (if not hotter) than a normal steel barrel would be. It's thinner, and it's basically wrapped in a layer of insulation that prevents the dissipation of heat.
from proof
"The aerospace-grade carbon fiber we use has a specific strength up to 30 times that of stainless steel and a specific stiffness up to 7 times greater than steel. But strength and stiffness are only part of the equation. Heat conductivity and thermal expansion are also of paramount importance when developing a match-grade carbon fiber barrel. Our helical wrapping pattern favors the longitudinal thermal diffusivity of the carbon fibers (along the length of the barrel) allowing them to more efficiently dissipate heat emanating from the barrel rather than insulating it.
Because our barrels are engineered for thermal performance, they also move heat very effectively through the wall (thickness) of the barrel, greatly increasing heat transport and resulting in barrels that cool faster and maintain accuracy over longer sessions of fire."
"The aerospace-grade carbon fiber we use has a specific strength up to 30 times that of stainless steel and a specific stiffness up to 7 times greater than steel. But strength and stiffness are only part of the equation. Heat conductivity and thermal expansion are also of paramount importance when developing a match-grade carbon fiber barrel. Our helical wrapping pattern favors the longitudinal thermal diffusivity of the carbon fibers (along the length of the barrel) allowing them to more efficiently dissipate heat emanating from the barrel rather than insulating it.
Because our barrels are engineered for thermal performance, they also move heat very effectively through the wall (thickness) of the barrel, greatly increasing heat transport and resulting in barrels that cool faster and maintain accuracy over longer sessions of fire."
I too was a little skeptical of the heat dissapation of carbon fiber , basically thinking it was insulating the heat from coming to the surface of the barrel. After a little research I learned that carbon fibers situated right has excellent heat dissapating characteristics, one article claimed twice as effective as a aluminum heat sink. Now this is all just internet searching, but I was very surprised to hear this. And the science behind these explanations seem believable. At least I can say I'm less of a skeptic now, that's the only fact that I know for sure.
