Over the holidays I used a wine box to check 3 22oz and 3 750 ml bottles of beer for the family.
This is the box that we get mail order wine in so they have the pressed paper forms to hold and protect the bottles. I just double bagged the beers and then taped up the box and put my name and address on the box. I also had a luggage strap that I put around the box in case TSA decided to cut open the box to inspect. At check in American Airlines asked what was in the box and I told them 6 bottles of beer. No problems.
Coming home, I filled up the box with local beer, did not bother taping the box just used the luggage strap. Same thing, they asked what was in the box, I told them Beer and there was no problem.
A couple of weeks ago I flew to Northern California. I used the pressed paper wine bottle forms in my luggage to bring home some Pliny and other Russian River beers.
My wife is a Gold Member with American Airlines so I never have to worry about paying luggage fees. If you are trying to take 12 bombers it may be cheaper to use UPS if you have to pay luggage fees.