Hi, I'm building an AR308 and am interested in your pencil barrels or big gunner barrels.

When shooting multiple shots, does the pencil barrel heat up faster in a way that influences accuracy, when compared to the big gunner series?

There is around a 2oz difference between the two, correct?  I'm looking at the 16" models.

Thank you for your time.

Originally Posted By bravo5two:
Perhaps this will give an indication, I just finished this year's He Man National 3 Gun match in Raton NM last weekend, using the new Faxon 18" pencil barrel.  From all of the range testing and practices, it is an moa barrel using Fed GM 168.  At match condition, as quick as we burned through rounds in relatively short period of 2 to 5 minutes per stage, I didn't notice any appreciable shift in POI.  It hit where I aimed.  Targets were 4 moa and placed from 130 yds out to 600 yds.

Originally Posted By breastroker:
I have had the 16" pencil 308 barrel since it first came out. Now shooting it in my 3.9 pound (without scope) AR308.

My first ultra light AR308 used the Faxon 18" mid weight back in 2015, got that rifle down to 5.1 pounds, that barrel also shot under 1 MOA but POI did shift some compared to the pencil barrel. Pretty amazing the 28.35 ounce pencil barrel can be so accurate at 16 inches. I only shoot factory ammo.

I have been able to get sub MOA at 100 yards from 175 SMKs, 168 SMKs, 130 Mk 319s, and lately the 110 grain Varmageddon's. Some 5 shot groups have been half MOA!

I usually shoot for accuracy using a Leupold AR 6-18 power scope.

But even when I shoot fast, the POI doesn't shift much, although the group size opens up to 1.5 to 2 MOA.

Just got a Faxon 18" Match 6.5 Creedmoor barrel @ 39.20 ounces, my goal is building a sub MOA rifle @ 400 yards with rifle weight under 7 pounds. Actually I am shooting for under 6 pounds as I like my rifles about 5.5 pounds before scope.

Originally Posted By breastroker:
I have had the 16" pencil 308 barrel since it first came out. Now shooting it in my 3.9 pound (without scope) AR308.

My first ultra light AR308 used the Faxon 18" mid weight back in 2015, got that rifle down to 5.1 pounds, that barrel also shot under 1 MOA but POI did shift some compared to the pencil barrel. Pretty amazing the 28.35 ounce pencil barrel can be so accurate at 16 inches. I only shoot factory ammo.

I have been able to get sub MOA at 100 yards from 175 SMKs, 168 SMKs, 130 Mk 319s, and lately the 110 grain Varmageddon's. Some 5 shot groups have been half MOA!

I usually shoot for accuracy using a Leupold AR 6-18 power scope.

But even when I shoot fast, the POI doesn't shift much, although the group size opens up to 1.5 to 2 MOA.

Just got a Faxon 18" Match 6.5 Creedmoor barrel @ 39.20 ounces, my goal is building a sub MOA rifle @ 400 yards with rifle weight under 7 pounds. Actually I am shooting for under 6 pounds as I like my rifles about 5.5 pounds before scope.

Originally Posted By olds442tyguy:

Are you shooting 308 I'm assuming? Faxon's website says they chamber to 7.62x51 NATO and 308 isn't guaranteed to work. Really curious about these barrels but to say it as nicely as possible, chambering for 7.62N instead of 308 is just outright dumb.