The main advantage of the rebated boat tail is for the manufacturer. The punch used for extracting the bullets from the point forming die can be quite a bit thicker on the edge which keeps it from breaking. b.c. is a wash as well as accuracy. There are claims that the rebate acts more like a flat base keeping the pressure equal on the bullet base as it leaves the barrel but that assumes the standard boat tail is flawed..........Rich
Looking at the Alco site and the bullet pics, I feel pretty comfortable in saying that we have some more hoaky bc.'s!
Rich: Lets try to be nice to each other here we all know figuring BC'S are a educated guess the same round in 5 rifles off the shelf will not shoot the same. The proof is in the reloader & shooter. I use a program to figure bc's I am not a math teacher so I'm not doing the calcs in my head so lets see some results and then see if I am hoaky.