Thanks guys, you are right. That loss of speed is really nothing at the end of the day. For some reason I hate the thought of being so close to 2000fps. I'll get over it.
The old buffalo really won't know the difference as you say.

.500grains, I agree that four to six shots is perfect to check your grouping to at least hopefully rule out shooters error or luck, and give you a more realistic group.

wadeb