LTLR,
The 265 gr AT RBBT is 0.230" longer then the 300 gr SMK. Add to that the ogive design which is much more aggressive then the SMK which also adds to the BC. The meplat is also a pin point, sharp enough to put one through your hand, trust me I know!!! **** near did it.
As mentioned, the Aluminum tip is very large which increases bullet length dramatically without adding weight.
Also, bullet baring surface area is nearly identical to the 300 gr SMK so even though its a longer bullet, it does not contact any more of the bore.
Compared to the Henson AT RBBTs, the Wildcat prototype is MUCH more aggressive as far as BC is concerned. THe 265 gr Henson has basically the same BC as the 300 gr SMK but with the lighter weight it offers a velocity advantage so in the end it still has a ballistic advantage.
The Wildcat just has a much higher BC because of a more aggressive design and the velocity advantage because of the higher BC. If Richard could get those jackets in it would be a very good thing but there is no sign of that happening. THey tell him they will sell him any jacket he wants or needs but then when he orders then, he is told they are not available and they do not know when they will be making a run.........