"Boat Tail Hollow Point "BTHP" as made by Sierra"
I just looked through Sierra's online catalog of .30-caliber bullets, and at one time they offered true expanding hollowpoint bullets, suitable for hunting, that differed from the MatchKings in that as the jacket got closer to the tip of the bullet, it got progressively thinner. It appears that they no longer offer such bullets.
MatchKings are not suitable for hunting (something that the website also states) because they perform like a full metal jacket bullet and do not expand.
Wait, I found it. Item 2140, 165-gr. hollowpoint boattail expanding bullet suitable for use in hunting applications becase it expands due to the larger hollow point and the progressive thinning of the jacket towards the tip.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.