Barrel ID

[jmf]

Does somebody know what make this barrel is? Its .54 with a 1:66 twist and 34” long. 15/16 straight with square bottom rifling. The GR 8909 is the only marking on the barrel.

[t.caster]

I'd say it's a Green River barrel. I've used them in the previous century and they are very good shooters! I think they were made in the west somewhere like Montana. I had a .62 cal. on my first Jaeger rifle that I killed a 450lb. black bear and many, many whitetails with!

[rich pierce]

I dunno. My .45 GRRW barrel has narrow lands and wide grooves. From 1977.

[okawbow]

GRRW Green River rifle works. Excellent barrels.

[jmf]

Thank you Sirs, Green River was what I was told, but I couldn’t find anything online to substantiate that, so figured someone here would know.

[Daryl]

My GRRW barrel. Seems to me, it was originally stamped GRRW on the breech-end.

[jmf]

I did some more scratching around this afternoon on the grrw website and came across some good info. This wasn’t a grrw barrel, but a green river plumb center barrel which was made by the green river company which ended up with the barrel machinery following grrw’s bankruptcy in 1980.