If this looks good to you

http://2.bp.blogspot.com/_NLo6sXVHd3o/TMo3XA3hZ4I/AAAAAAAAAtA/dZuvbDSyGWg/s1600/ult_italian_sub4.jpg

Here is the recipe.

1 large round loaf, about 10" in diameter
1/2 lb. mortadella
1/2 lb. capicola
1/2 lb. genoa salami
1/2 lb. prosciutto di parma
1/3 lb. provolone
1 jar (16 oz) olive salad (I use Boscoli)
1 jar (7 oz) roasted red peppers, sliced
1 jar (12 oz) marinated artichoke hearts, drained & chopped
1 jar (12 oz) mild banana peppers, sliced
1 cup balsamic vinegar

Carefully slice the loaf in half to form a large bun. Scoop out the insides (top and bottom) to make a large cavity for the filling. Begin layering the various meats, cheese, and condiments. It helps to lay everything out assembly line style and layer in order, making sure to get everything evenly distributed. Be sure to use all the meat and cheese, you'll likely have extra condiments (these can be served on the side if you like). Once the loaf has been filled and topped off wrap it tightly in plastic wrap. Put a heavy pan over the top to weigh it down and chill the sandwich for at least 4 hours to let the flavors come together. Unwrap, slice in wedges, and drizzle with balsamic vinegar.

Feeds four with big appetites or six with medium appetites.

Have not tried it yet but it looks great. Going to try it as soon as we get all the ingredients.