Louisiana and several other states have adopted an attitude that limits what they term "Crossover hunting" which means that they want you to hunt one type of game at any given time rahter than shooting targets of opportunity. They also do not want you to shoot a deer with an undersized ball, but will permit you to shoot one with a .22 LR!!! I agree that the .40 is under powered for deer, but the hypocrisy annoys me.
On the other hand, there is a back door. By Louisiana state law the caliber of the gun is whatever is stamped on the barrel. No other testing is performed on the balls carried or the bore. :rotf:
As to people not making rifles in .40, Matt Avance of TVM, Mike Brooks or Tip Curtis could set you up if kit building is not your thing.
I have 3 rifles in .40 at the moment and like them all. I also cobbled them all together and will scrupulously comply with state law when I return to Louisiana! Yup, still got some stamps from Harbor Freight for just that purpose. :winking:
On the other hand, I also have a great .36 and plan to build another before long, so maybe I will just use those.
CS