I used your dime test and it dropped all the way through and stopped about 3/8" from the muzzle. I couldn`t push it any farther and since it was so close to the muzzle I broke out the dial calipers and and measured it at the muzzle. I came up with 7.92 and 7.93
Burch
Burch,
I think you better check your dial calipers, do you mean .792"? I would say they may be proud by close to .100", or you read it that way. Nominal bore on most 12 ga guns is around .730 + or -. Most dimes measure between .700" and .710", depending on the wear. With the 30" barrel and the dime not passing through, I would say you have a full choked (CHOKE) barrel.
You may or may not get rifled slugs to shoot through it OK.
Rifled slugs for deer and hogs out to about 75 yards, you could use 00 Buck for close shots if it patterns well out to about 25 yards effectively.
#4 or #6 shot (birdshot) for the turkeys.