Is there a cheat sheet on barrel nomenclature. Looking at barrels. I understand 20 gauge but not sure about C weight. Thanks so much as I am a smooth bore newbie.
20 gauge; C weight barrel - barrel nomenclature
- Thread starter oldhunter1954
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I thinking the C or a,b,d are measurements for swamped barrels, and mostly rifles
Here's the Colerain barrel diagrams with the a, b, c, d descriptions for each of the barrels they make. The last three barrels are the fowler barrels.
Barrel Diagrams | Colerain Barrel Co.
Barrel Diagrams | Colerain Barrel Co.
That is what it is, A-B-C-D weight which refers to how robust the barrel is. An A weight barrel is a wispy little thing, 3/4" or so at the waist (narrowest section) or smaller and would be used for up to a .45 cal rifle.
On the other hand a D weight barrel as used in a 12 ga fowler is big enough to be bored to .72 cal with metal to spare.
Here is the profile of a C weight Colerain 20ga fowler barrel;
On the other hand a D weight barrel as used in a 12 ga fowler is big enough to be bored to .72 cal with metal to spare.
Here is the profile of a C weight Colerain 20ga fowler barrel;
plmeek
40 Cal.
This is a similar question to one that was asked a couple of months ago.
The A,B,C, and D designations pertain to the diameter of the barrel at the breech. In that sense, they relate to the overall barrel size and its weight. That's why the terms "A weight (wt.)", "B wt.", "C wt.", etc. are used.
An "A wt." barrel generally has a breech diameter of 0.937" or 15/16".
The "B wt." barrel generally has a breech diameter of 1.000".
The "C wt." barrel generally has a breech diameter of 1.062" or 1-1/16".
The "D wt." barrel generally has a breech diameter of 1.125" or 1-1/8".
The profile and length of the barrel will be different depending on the particular barrel pattern, "Lancaster or Dickert", "Golden Age/York", "Jaeger", but the diameter at the breech will be the same for the each letter designation in each pattern.
These barrel profiles have been somewhat standardized among barrel makers so they fit the pre-carved stocks and kits sold by the various suppliers.
There are exceptions when a barrel maker offers a barrel that more closely replicates a historic barrel type rather than the more common generic type.
The A,B,C, and D designations pertain to the diameter of the barrel at the breech. In that sense, they relate to the overall barrel size and its weight. That's why the terms "A weight (wt.)", "B wt.", "C wt.", etc. are used.
An "A wt." barrel generally has a breech diameter of 0.937" or 15/16".
The "B wt." barrel generally has a breech diameter of 1.000".
The "C wt." barrel generally has a breech diameter of 1.062" or 1-1/16".
The "D wt." barrel generally has a breech diameter of 1.125" or 1-1/8".
The profile and length of the barrel will be different depending on the particular barrel pattern, "Lancaster or Dickert", "Golden Age/York", "Jaeger", but the diameter at the breech will be the same for the each letter designation in each pattern.
These barrel profiles have been somewhat standardized among barrel makers so they fit the pre-carved stocks and kits sold by the various suppliers.
There are exceptions when a barrel maker offers a barrel that more closely replicates a historic barrel type rather than the more common generic type.
