shotgun cartridge sizes

[BWB 3]

Could somebody point me in the right direction I am looking for either a table or guide as to the actual size of the different cartridges avaliable

ie 20 bore = 20mm across diameter

12 bore = 25mm across diameter

 

this is just for a little project that i am looking at doing thanks in advance .

[hiho 5]

you need a hobby

[BWB 3]

this is going to be the hobby!!!!!!!!!!

[SportingShooter 0]

What information are you looking for and for what purpose?

 

Need a little more detail

[the Verminator 0]

the gauage is determined by how many balls of lead can be roled into equal sized balls and fitted into a shot gun barrel, i.e. 20 bore = 20 equal sized balls. hope this helps a bit

[markdog 18]

its not just how many can fit in the barrels because obviously shorter barrels would hold less, bore is determined by how many balls of lead equal to the barrels diameter could be rolled out of 1lb of lead,

[humperdingle 0]

Let's make it a bit simpler:

 

Take a 1lb chunk of lead.

 

Take 1/12th of it, roll it into a ball, and that's a 12 gauge.

Take 1/20th of it, roll it into a ball, and that's a 20 gauge.

 

And so on.

 

Filling up a shotgun barrel with balls of lead is nothing to do with it, neither is the length of the barrel...

 

 

 

10g 0.78" (19.7 mm)

12g 0.73" (18.5 mm)

16g 0.66" (16.8 mm)

20g 0.62" (15.6 mm)

28g 0.55" (14.0 mm)

Edited March 13, 2009 by humperdingle

[markdog 18]

thats basically what i said but you put it better i know the length of the barrels have nothing to do with it, was just saying others where wrong saying its how many balls of lead fit in barrels because barrel length would affect this formula. I said 12balls of lead out of 1lb of lead equals 12bore

[humperdingle 0]

Yeh I saw that after I re-read the post... thought it didn't look right lol.

[markdog 18]

Yeh I saw that after I re-read the post... thought it didn't look right lol.

no worries i could have put it better