I cut a few 11 degree crowns, at the request of customers. but never bought into the idea that it did anything. I used the same recessed flat crown, with a 60 degree chamfer, from the day I started to shoot BR to the present.
Regarding the performance of flat base vs BT bullets for short range, it is difficult for me to give any definite opinion. I can only say that my best BR rifles shot better with boat tails. I have to admit, my aggregates, back in the day, were not nearly as small as are being shot today. Might be that BT bullets could not compete today. GD
