If you are using Clark, and one of their barrels, consider using a ramped model if you ever have any desire to play with 45 super or possibly 460 Rowland. It's a much stronger design, and having the that cut in your frame makes hot loads almost worry free.
It does limit "drop-in" barrel choices if you want to change later, but a ramp can be pinned into the frame and you would never know the cut is there. I have one caspian with a ramped clark, now about to get fit for a 460 Rowland, and another with the cut but pinned-up at the moment.
If you have no desire for "more" power, it might not apply to you. But since you are going to them, it's worth discussing.