Making Chopper Lump Barrels

Beretta will make up barrels with lugs made to your general specs and leave it to you to finish up to final size. Part 61 in a 65 part series of the manufacture process of a side by side double barrel chopper lump side lock shotgun. 4th september 2019 general gun posts in june 2018 we posted on our grulla site a short piece around shotgun barrel manufacturing.

tutorial guitarra vodafone red entertainment plan india twin bed porch swing plans tutorial knife handles website frame template toolbox talk template printable use wood putty tutorial tech deck español

Wood Plans Woodworking Carpentry Download

Do You Know Your Chopper Lump From Your Dovetail Barrels Grulla

Sxs Shotgun Barrel Mfg Part 26 Filing Up Lumps Youtube

The Difference Between Demibloc And Monobloc Barrels Sporting

Shotgun Design

Sxs Shotgun Barrel Mfg Part 15 Making The Top Rib Youtube

Sxs Shotgun Barrel Mfg Part 2 Deep Hole Drilling Bore 1 Youtube

Why are chopperlump barrels seen in old english spanish and german sidelocks and boxlocks so much preferred to say the monoblock system used in say a new zoli or chapuis.

Making chopper lump barrels. Chris made the first ten pairs of 410 barrels we used in 1990 when we started building the hand detachable lock guns the same time as he started his business and he has supplied us with superb quality chopper lump tubes ever since in a range of sizes up to 8g. The best italian doubles also use chopper lump barrels. Chopper lump barrels can be recognized by the fine joint line running longitudinally down the center of each lump. Chopper lump barrels can be identified by a very fine longitudinal line where the lumps are joined usually visible in the polished bottom of the lumps.

Each barrel is formed from a single piece of steel which gives additional strength as the steels grain flows through the entire barrel. A demi bloc is often referred to as a chopper lump barrel and from the top and left picture below it should be evident why. Finishing the stock with two part epoxy. Chopper lump barrels are found in virtually all london best and spanish best guns.

Barrel types what is a chopper lump vs a monoblock. Chopper lump barrels tend to be machined honed which means the tubes have to be soft soldered together as extreme temperatures from brazing can warp ripple the bore. They quoted a project for me but it was around 1700 pr in any ga. I believe one is in germany.

The picture above shows the assembled demi bloc. Each barrel tube is forged to leave half a lump integrally at the breach two lumps are then braised together to create a set of double barrels. Chopper lump barrels called demi bloc barrels in italy a method of joining the two separate tubes of a set of barrels where the right hand half of the pair of lumps under the barrels are forged integrally with the right barrel and the left hand half of the pair of lumps under the barrels are forged integrally with the left barrel. There are firms which make barrel blanks.

Or length to 32 if i recall.