I find this thread entertaining.
Here's the BCA equipment specs:
Corner Pocket: Mouth 4 7/8” minimum to 5 1/8” maximum
Side Pocket: Mouth 5 3/8” minimum to 5 5/8” maximum
The angle at the corner pocket entrance on each side of the pocket is 142º (± 1º).
The angle at the side pocket entrance on each side of the pocket is 103º (± 2º).
Vertical Pocket Angle: 12º minimum to 15º maximum
My Gold Crown I, which I believe has the original sub-rails and original rubber, measures out at 5" corner pocket opening and 141º. Note that that's the average, there's slight variation in the opening, none in the angle.
I think this is IDEAL for a home table that's shared with family members who are not serious players. And, it's fine for a serious player. (Side pockets are 1/2" wider at the tits.)
Note that anything below 4 7/8" is out of spec for BCA.
Incidentally, WPA Tour specs are:
Corner Pocket Mouth: between 4.5 [11.43 cm] and 4.625 inches [11.75 cm]