Has anyone heard of this? I came across this looking at Triarc’s barrels. It sounds like it has the same benefits of 5r/ polygonal rifling. Basically, each land has a straight edge and then a smooth or polygonal edge . It like a mix between conventional and polygonal rifling. The benefits are it provides increased bullet accuracy, less deformation, less friction and a tighter gas seal with increased barrel life. I assume it would also have the benefit of less barrel fouling. The actual patent on this is fairly recent belonging to a guy with the last name of Feddersen who is a renowned competition shooter. Theoretically, does this offer a benefit over polygonal/5r rifling? This rifling setup seems really interesting and not too common.
I would be shocked if people realized a benefit in an AR barrel.
Having never shot out an AR barrel, im curious how rifling extends barrel life.
Its an interesting concept, and would try it out, but I wouldnt pay much extra for it.
I’m surprised that is patentable. That’s just a minor rehash of ratchet rifling that has been around since the 1800s. I doubt it has any advantage over ratchet rifling where the root of one land starts at the terminus of the preceding. I don’t think it is bad, just not of advantage.
I personally like ratchet rifling. I think it exposes fewer land corners to potentially chip off in the throat, prematurely destroying accuracy.
Rev arms was doing this 2-3 years ago but went under. They had stupid accurate barrels and they were getting better muzzle velocities. It’s similar to having a noveske stainless barrel.i have a buddy that got a 12.5 from them and he says it’s lights out accurate and has muzzle velocity of a 14.5
I got a Triarc 12.5 on a pistol setup. Still need to run chrony on it. Anyone have specific ammo they are curious about velocities?
Fusion MSR, please. Also M855, MK262, and M855a1 if you have it. I’ll be happy if you just test Fusion MSR.
I have none of those except for black hills 77gr otm
M193 imi, magtech 62gr, Speer gold dot , wolf gold 55gr, sb 55gr
I think a Gold Dot test would be good info. 77 and 62 perhaps? I’m also interested in the Wolf Gold velocity from that barrel.
Pm me your address. I’ll send you some ammo, if you’ll chrono it. Might be a week or so for me to get to the UPS Store. We are talking about a Triarc Track 2.0, correct?
Yes I have a 12.5 triarc track 2.0 barrel
Built on a San tan billet set
I purchased this in June
I don’t see a 12.5 on their site anymore?
I never could get a reply to my emails from them
I just put together an AR using a midlenth gas system 12.5" Triarc 2.0 and am very pleased with the results. It seems to prefer 69gr, 75gr, and 77gr and I shot several 10 shot groups that hovered between .5" and .75" at 50 yards (where it is zeroed). I had planned on chronographing it when I went to shoot 100 and 200, but the rain came in and put a stop to that for the time being. From what I have heard the Triarc barrels are pretty fast and will shoot around the same speeds as some traditional 14.5" barrels. If they are not on the website they may be out of stock. They have been busy building rifles for several PD’s and SWAT teams. You may have better luck just calling them during business hours.
I’ll be interested to see how velocities in this barrel compares to others with familiar ammo. I’ve been eyeing Triarc for a couple months, completely unaware of them before that.
GarandThumb did a review of their 1911 9mm recently. Given the purported quality of that pistol, I’d be interested to see how one of their barrels performed. I’ll have to ask if they do do a lighter contour though. I’ll report back what they say on that contour. I’m intrigued about the possible rifling accuracy benefits. Their barrel is reasonable as it’s leff than a BCM BFH barrel and on par with other high quality barrels.
GarandThumb also did a review on one of their rifles. If memory serves, he said he shot very accurately with it.
Correct. I don’t remember hearing him say how many rounds he had through it though. And I wish he would actually shoot a few groups like MrG&G.
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I missed that. I’ll have to go look for it.
I looked at the Triarc barrels. Now I have a question…which would be better, a BCM BFH 11.5 or a Triarc 11.5 suppressed only SEP barrel? No real dog in the fight here. The BCM is more expensive but is that better? I have it built but haven’t printed it yet. The Triarc guy claim their barrel is 1MOA and the most other CHF barrels are good but 2MOA all day long. Experience? Thoughts?
If you plan on an 11.5" to be run suppressed you should take a look at the Sionics Reduced Gas Port and Extreme Reduced Gas Port barrels.
I have a BCM BFH. I’ve looked at the Sionics. It’s a very nice barrel. My comparison was more about the SEP rifling as a new concept vs “the best suppressed only barrel”. I’m not looking for a new barrel per se. I’m moreover asking a comparative question of those with experience.
There has been much discussion and it has been well established that the Sionics RGP is an excellent barrel. It’s not the topic of discussion in this thread that’s why I didn’t mention it or put up a poll. I appreciate your recommendation of the Sionics barrel.
My question still stands for those with experience with SEP barrels.
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