Just curiosity question. Even when bullets are tested at a match to my knowledge it is out of the longest barrel allowed in the class. This would give you your pf.

So as long as your rounds chrono good from a 5 inch gun you should be fine. Though I do agree with ken, give your self a cushion of 5k over.. This should ensure you never have a problem.

Jeff H.
4 Gun - SS
SSP - EX
SO - A47095