Proof Research - 6.5 CM Barrel CAMGAS
- Thread starter ChuckP65
- Start date
I bought a 22” 6.5 camgas Proof and was really happy with the initial accuracy with factory Hornady 120 and 140 ELDm. I plan to hand load and get it even better. I’d buy another one for sure.
I do not have any experience with Proofs 6.5 Camgas barrels. But I have several 223 Wylde Proof barrels and there are shooters for sure. But the idea and intent is worth it. Adding length to the gas system help with the reliability and smoothness of the system. I would not hesitate to recommend Proof. But, whichever company you go with try and get an extended gas system when running semiautos in 6.5CM or similar.
So any barrel for example 22 inch will have the same type of reduced gas impulse? They - Proof - make it sound like their system is different. I've been researching a lot and they are they only barrel maker I've come across that provides an extended gas tube with the barrel to fit which makes total sense to me. Go beyond typical rifle length and move the point further out to do the same thing as if you went from carbine to mid length like I did on my 15 with an Odin works mid length on my M4. The thing is companies like Criterion and Wilson Combat don't seem to sell or mention longer tubes on for example 22 or 24 inch barrels. Am I thinking this through properly or missing something? Rifle is standard longer. Right?
With the amount of gas adjustable products out there I wouldn’t say it’s earth shattering but what I will say is that Proof AR barrels always seem to shoot phenomenally well. I’ve had a couple and each one got the eyebrow raise with the, “How?”
Biggest problem with Proof is finding an all steel right now as they are on a 5 to 8 week backorder so far everywhere I've looked. I suspect that's because a 22 inch 6.5 carbon is 3.0 pounds. All steel is 3 lbs 14 ounces. Really hard to justify an additional $300 for 14 ounces!
Going to call Wilson tomorrow. I like that super sniper especially since they will coat it black. They sell them in 22 and 24 but I may be looking and not seeing an extended gas tube. I wonder if they place it at rifle length. I know I can go adjustable. Just looking to gas it right to eliminate premature part wear.
I gotta say though there is something to their claim about heat buildup. I have no science to back it up but I find it a pleasant feature on an AR. Rapid fire is fun regardless of use. It also looks sick on a black rifle or any rifle...
You might have luck finding a take off on one of the more AR focused sites or Tacswap and getting a deal that may make the gap closer to negligible.
Yes. They are still very much being considered. I think Proof mostly just created a longer than rifle gas system. Now to find out if true and if any of these other makers have comperable solutions. No offense Charnicus but not real interested in rapid 6.5 fire. Looking for a hyper accurate setup. What about blocks? I may need a low profile - fits in a 1.3 ID handguard -adjustable. Looks like there is a bit more room if my calipers not lying but not a ton. May be a tall order. No pun intended. This is why the CAMGAS is so appealing as an alternative.
Mine have fit just fine under a DPMS low with SLR adjustable gas block. .925 and .875.
So I talked to techs at Criterion and Wilson. Criterion said they use a rifle length gas tube and recommend not using an adjustable gas block. Wilson said the opposite. They also use a rifle length tube in a 22 inch 6.5 CM AR barrel and highly suggest the SLR adjustable. Clear as mud. Neither has an elongated gas tube like Proof and Ranier. Guess I'll just order and wait on the Proof. Wilson told me they are 'working' on a new gas block but don't know when it will be ready. It is apparently non-adjustable but made for this application.
I have a 20" Proof steel barrel in 6.5 with the camgas system. I've been chasing a problem with it not locking back on an empty mag.
I'm running a JP LMOS BCG and silent captured spring with an Odin Works adjustable gas block. I was hoping ro set it up similarly to my 3gun AR with a low impulse recoil feel to it.
I tried my hand loads first then 3 different factory loads. I ran the gas block from fully closed to full open on each type of ammo without any luck.
After talking with my LGS owner, he said my setup was too light. So he gave me a heavy silent capture spring to try, no luck. I had a standard heavy carbine buffer and spring and that didn't work either so I put my suppressor on it and it finally locked back.
So with that I thought I was under gassed so I wrote to Proof and they said that with the camgas system, I needed a heavier buffer and BCG or I could open up the gas port .003". That still didn't make sense to me but I tried a buddy's standard BCG and heavy buffer and spring and it adjusted perfectly.
So short story long, if you're running a 6.5cm camgas under 22" then the JP LMOS and captured spring probably won't work.
But as far as accuracy goes, so far it shoots around 3/4" 5 shot groups. Hopefully it'll come down a bit once I get the gas system naled down.
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