Our customers sometimes refer to this as the John Bivins style, since he often used this barrel profile on his extraordinary rifles. We offer Colerain 42" swamped barrels in three different profiles. The price includes the breech plug, installed, and match-marked.

Our 'A' profile small caliber Golden Age barrel has a .950" breech, .700" waist, .762" muzzle, and round bottom rifling.

Our 'B' profile mid caliber Golden Age barrel has a 1.000" breech, .750" waist, .812" muzzle, and round bottom rifling.

Our 'C' profile large caliber Golden Age barrel has a 1.062" breech, .812" waist, .875" muzzle, and round bottom rifling.

Colerain barrels are cut rifled with fancy radius groove rifling, in these correct twist rates for round balls:

1 turn in 48 inch twist, in calibers .36 or .40

1 turn in 56 inch twist, in calibers .45, .50 or .54

1 turn in 66 inch twist, in calibers .58 or .62

Colerain rifle barrels are the favorite choice of today's best muzzle loading gun makers, because knowledgeable shooters demand Colerain's accuracy, inside and outside.

Founded by two entrepreneurs, Scott Keller and Scott Kelly were tutored by Bob Paris, the famous rifle barrel maker who was first to perfect the technique for production of correct swamped barrels.

Colerain rifle barrels are drilled from solid steel, cut rifled .012" to .016" deep depending on caliber, with six "round bottom" grooves. Called "radius groove rifling", Colerain eliminates the sharp inside corner that accumulates fouling. Radius groove rifling cutters are a bit more expensive to make, but Colerain's customers agree that the accuracy, easy loading, and easy cleaning are worth the cost.

Colerain barrels are precisely profiled to fit our pre-inlet stocks, making the barrel a snap fit in our pre-inlet stock, after squaring the inside corners of our inletting, at the breech. This is a great labor saving advantage. Select a Colerain barrel, and our matching stock!

We sell every Colerain barrel made! Every caliber, length, and style will be found in our huge inventory. Click ADD TO CART to order.