HollowPoint,
Great idea! Very Inventive!
Reminds me of an elderly gentleman who had a B&M 193 Boat Tailed mold. He shot cast bullet silhouette wih us up until the mid 1990's until he passed on. He used that bullet in his 30-06 with slow burning powder and corn meal to act as a gas check. He did pretty well with it. As I recall the boat tail seemed to be patterned after the 173 gr service bullet which I believe had a 9 degree boat tail.
Best of luck with your future experiments.....
w30wcf