Im am sorry to say but being how fast quail are and 100 yards is alot of distance for any shot gun using 7 and a half shot maybe try 30 yards tops with winchester universal rounds or federal 7 and a half or 8 shot

yeah i think 100 yards may even be pushin it with slugs

I'd recommend a double in a 20 or a 16 gauge,7 1/2 or 8 shot, and 30-35 yards max. A 28 if you're really sporting, and have one, and can find shells.

A 12 gauge will make quail hamburger if you connect with one very close. If you are able to, try to borrow or use something smaller. If 12 is all you have maybe use the most open choke you have , or let the bird get a little distance before you take the shot.

Be aware of where you are, where the dog is, and where your partner and/or guide is at all times. Quail do not play fair sometimes and when you are lining up on one don't swing your arc of fire onto anyone else. It can happen fast, so watch out. And watch out for the other person.

Don't shoot the dog. That costs big bucks and you go home early and sad. I am only joking a little about this. I have seen it happen too many times. Once is too many times.

Be safe and have fun!

Maybe you meant to say 100 foot. Use 8 shot.

don't worry about tearing up the quail if you use the right choke... improved cylinder or improved modified. And I also hope you meant 100 feet, but if you didnt the learning curve will kick in fast

You don't want to take a shot at 100 yards. Never going to hit it. If you do mean 100 feet, I would recomend high brass 6 shot and get a full choke in your gun.

Normally, you can expect quail to jump up within 20 yards of you or less. You should have plenty of time for a nice shot in the 30-35 yard range where #7 shot is about right. You want the widest pattern you can get though so an improved cylindar is nice for quail. You can shoot up to a modified choke if you need to. I have often hunted quail on the prairie in South Dakota where late in the season, they will jump at about 40 yards ahead of you. There, I have used #4 shot with a full choke. It will knock them dead out to about 60 yards. You shouldn't be shooting at them much further than that. Your #7 shot will be limited to about 35-40 yards... it is like throwing pepper into the wind... it slows down real fast... that is why you can't shoot very far with it.

again at a 100 yards ude be wasting the shells u bought dont worry about tearing it up with a 12 gauge ive never had a problem