It is my understanding that both will shoot any powder except Black Horn reliably. From experience i know both are accurate.

I shoot Black Horn reliably in both the Accura, and the V2, but i did do some drilling, and machining.

To me the choice is simple. If you don't shoot BH, either of these rifles will work for you. If you wish to shoot BH, then both of these rifles need work done on their breech plugs, or as you say 'drilling'.

If you wish to shoot BH, but don't want any 'drilling' done, then you should purchase a TC. Here is an example of an Omega.

Getting the 'drilling' done is no big deal. Also, it is a one time thing. Which ever CVA you choose, you can easily be ready to use it by January. The TC will be ready to shoot BH, when you open the box.