The 1100, as already stated, is perfectly suitable to shoot trap, the add-ons of a monte carlo stock or a stepped rib are to facilitate ease of shooting. And even though I'm no mossberg fan between it and the 870 you will be well served in the price range you specified.
As XTbabe suggested lifting weights is a great way to build strength, simply doing reps with the gun in front of a mirror will help with developing muscle memory.
A simple item to add to the gun is an adjustable comb, this will allow you to not feel like you are craning your neck to the stock.
Gamaliel's has these and they aren't much money. http://www.gamaliel.com/accessories/Gun ... /index.htm
As XTbabe suggested lifting weights is a great way to build strength, simply doing reps with the gun in front of a mirror will help with developing muscle memory.
A simple item to add to the gun is an adjustable comb, this will allow you to not feel like you are craning your neck to the stock.
Gamaliel's has these and they aren't much money. http://www.gamaliel.com/accessories/Gun ... /index.htm
