OG SP AA glued two piece question- bore sizes

[Chappy]

I seem to remember that the glued two piece AAs cam in three bore sizes notes by the colors of the backs. There were 3, black , silver , and grey iirc. Anyone know if I’m correct and if so, what the bore options were?

[lew]

Never seen a silver back for the glued barrels, but all my black ones are .689" and my 18" Big Daddy with a gray back is .684".

[scottieb]

I'll try and get the old SP catalogs out and get some pics. I used to know. Black is the middle bore size for sure. I'm thinking the darker grey was the biggest bore and lighter grey the smallest. I can confirm this weekend.

[Jordan]

Zdspb.com to the rescue.

Bore sizes were 0.686 (light gray), 0.689 (black), 0.691 (dark gray).

[lew]

Zdspb.com to the rescue.

Bore sizes were 0.686 (light gray), 0.689 (black), 0.691 (dark gray).

My 18" light gray-backed Big Daddy barrel is marked .684", and it's been twenty years since I've seen another light gray back, but I remember it being the same.

[Jordan]

I have no first hand experience with them, just quoting what Andy put on his site. Could be that he made a typo, or measured wrong.

[lew]

I'm thinking it's a typo, cuz this barrel both states and measure .684".