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Centerfire Rifles - Manually Operated Lever action, bolt action or other non gas operated centerfire rifles. |
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#1
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Anyone running a Proof Research barrel?
Anyone have any actually hands-on experience with the Proof Research carbon barrels?
Pros-Cons? Tons of reviews online but most of them seem to be sponsored and trying to get sponsored by Proof. |
#2
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Pros: Much lighter than comparable steel barrel, relatively precise; in my experience, POI stable cold bore through 10 rds rapid fire; some excellent smiths are confident in working with them.
Cons: ~3X the cost of comparable steel barrel; some smiths are hesitant to guarantee their work on this barrel. |
#3
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But apparently Proof has it all together now I have a Hardy Rifle Engineering carbon fiber wrapped barrel on my PRS rifle but I stil need to shoot it
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WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#4
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I have put a few proof barrels on receivers for people.
I have gotten several comments that they wander just like a skinny barrel as soon as they heat up. On a hunting rifle, this is not a concern. I would not recommend them for a target rifle. It's interesting to note that proof sponsored shooters usually do not use the carbon wrapped barrels on their match guns. There is probably a reason for that.
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Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#5
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Correct Randal !
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WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#6
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Any recommendations on a prefit?Or can you do a custom barrel for a RPR? |
#7
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Good to know. Was considering a proof barrel for a 6.5 creed more build. Time to lift more weights. |
#8
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That's interesting, because I've seen the opposite. My sample size is small, 3 Sendero-Light contour barrels, but they have all hammered out decent 10 shot groups, anywhere from sub-MOA to about 2". OK, 2" isn't super impressive, but that gun has a 26" barrel chambered in .300 Mag, and those 10 shot groups were consecutive shots with no cooling in between.
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#9
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here's just one more instance where a nicely contoured, button rifled and hand lapped chrome-moly barrel outshoots a PROOF: (the CMV barrel is onle 3.5 ounces heavier...and 1/3 the price)
https://www.gunsamerica.com/blog/b-m...s-full-review/ |
#13
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Let people experiment and if it works . . . good for all of us Or at least for the ones who want to spent the money
__________________
WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#14
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And this was my concern. They claim no POI shift after shooting strings and that the carbon helps distribute the heat more evenly to allow for less POI shift and faster cool down. Interesting your customers are saying the opposite of what Proof states.
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#15
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#16
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I was looking at the Hardy as well. Those things aren't cheap either. I'm looking to build for a PRS rifle too. Let me know if you do any testing with it soon.
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#17
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Mine shoots great even after getting the barrel hot. Must of gotten lucky! Randall built mine as a hunting rifle and couldn't be happier.
Last edited by shooter1975; 08-23-2017 at 9:24 AM.. |
#18
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Sent from my SM-G930T using Tapatalk
__________________
WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#19
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How many PRS shooters are finishing in the top 20% while using a carbon wrapped barrel?
Light weight is NOT an attribute you want in a target rifle. Proper balance is FAR more important than the total weight. A 14lb gun that's tail heavy is harder to shoot well than a 18lb gun that balances properly.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#20
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Quote:
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#21
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I think it's a case-by-case basis kind of deal.
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Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#22
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Nice
Sent from my SM-G930T using Tapatalk
__________________
WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#25
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How old is the barrel? Apparently they've gotten better in the last few years.
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#29
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Weight is NOT my major concern with this build. I'm looking for accuracy and least amount of POI shift. Proof seems to be the only one advertising no POI shift from rapid fire due to the construction of their carbon wrap and heat distribution. Plus it's light weight. If I can get both, thats a win. |
#30
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Sweet rifle! I've read nothing but good things about Randall's work You mind taking it to the range and fire 30 rounds through and letting me know if it drifts? LOL |
#31
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At $3.50 a round! No problem bud! Im on it!!!!
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#32
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That's cheap ammo !
Just kidding Randall just finished a 375 CheyTac for me Sent from my SM-G930T using Tapatalk
__________________
WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#33
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Compared to yours it is!!!! LOL!!! Beautiful rifle bud!
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#34
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Thanks !
Randall did a real nice job on my custom barrel for my Desert Tech HTI 15 lbs of steel . . . spitting 375's . . . out to 2 miles . . . hopefully . . . on target !
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WTB : Bren Ten - WTB : Wildey 45 & 475 Magnum |
#35
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The key to eliminating POI shift is the barrel walls being even.
A straight bore is the biggest factor in that as the contouring is done in relation to the two ends of the bore. POI shift stems from differential thermal expansion of the barrel. If the walls are the same all the way around the barrel, they expand the same. ALL barrels have some amount of bore curvature. It could be just 0.0005" over the length of the barrel or it could be 0.050" over the length of the barrel. The longer the barrel blank, the more potential there is for curvature. Ordering your barrel blank just 1" longer than your final finish length ensures that the external contouring is more concentric than if you order a long blank and then chop 6" off of it. I have cut down factory 26" barrels to 18" and found 0.050" of barrel wall thickness differential. If one side of the barrel is thicker, that side will expand more than the thinner side. The expansion will cause the bore to deflect away from the thick side. Since the scope is mounted on the receiver, the POI will wander in relation to the receiver as the barrel deflects. The RATIO of the thickness differential is the factor that determines how much the barrel will deflect. If you take two barrels of different contour that both have a 0.025" difference in barrel wall thickness, the thinner barrel is going to deflect more. The thicker the barrel wall, the smaller the ratio will be and therefore the deflection will be lower. This is part of why benchrest guns use such heavy contoured barrels. Anything that imbalances the heating and cooling cycle will effect the thermal differential expansion as well. A barrel that fits closely in the stock will tend to stay warmer on the underside as the top side cools down. Additional clearance between the barrel and stock will improve the cooling of the underside of the barrel.
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Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. Last edited by ar15barrels; 08-23-2017 at 12:01 PM.. |
#36
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Randall Your giving away all my secrets? The barrel on my 338 Lapua Improved is 1.750 at the muzzle and the barrel channel is 2.125 inches in diameter.
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Lynn Dragoman, Jr. Southwest Regional Director Unlimited Range Shooters Association (URSA) www.unlimitedrange.org Not a commercial business. URSA - Competition starts at 2000 yards! Last edited by LynnJr; 10-15-2017 at 8:09 PM.. |
#38
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Sure. I typically use a 22" Bartlein Med Palma, 6.5 CM, and arrive at ~0.5-0.6MOA with handloads. I am not an exceptionally talented or experienced marksman. Chamber work by LRI. Barrel break in was fairly quick, ie less than 50 rounds. The Proof CF Sendero, also 22", with a Berger chamber by LRI, took ~70 rds to settle into 0.6moa with handloads.
Prime 6.5 130gr in the Bartlein shoots ~1moa. Same ammo in the Proof CF barrel shoots 0.6moa. (Probably due to the shorter throat) So far I have shot one string of 10rds with the Prime, as fast as I could work the bolt, cold bore through 10 with 0.3moa vertical and 0.75 horizontal dispersion. Load development continues with the goal of getting under 0.5moa. I can't really comment on the thermal dynamics of the Proof Sendero CF barrel, but so far it shoots as well as my Bartlein Med Palma, and weighs a couple of pounds less. Keep in mind, this is a sample of one. |
#39
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I run a Proof barrel on my 223AI I built for my son. Wanted to see if it was worth the money. He's only 12 and he has to pick up the rifle and fire it when we're not at the range.
Is it anymore accurate that my other rifles with a fat heavy barrel, I can't tell. It does shoot well even after firing 20 consecutive rounds and getting all of the into a nickel at 100 yards from a cold bore. But it is only a 223 AI. I personally wouldn't do it again. Like others have said, a regular heavy barrel for target, and the proof carbon for maybe a hunting/backpacking rifle for hunting where you have to hike. Next builds will have the regular varmint style in stainless. I could have bought 2 standard blanks and ammo. Just my opinion. Last edited by cocorador; 08-25-2017 at 9:12 AM.. |
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