450 Rigby
AH senior member
I have also been considering the 180gr TTSXs in my 300 H&H. I'm currently shooting 180gr Accubonds & 180gr Trophy Bonded Tips at 3050 fps. I did have a few 180gr trophy bonded tips blow straight through a cow elk a few seasons ago with minimal expansion....so I've been considering a different bullet for plains game next year. I also have 200gr Swift A-Frames & 180gr Swift Sciroccos. The 180gr Swift Sciroccos are shooting 3/4" with 70.5gr H-4831 however they're only going 2895 fps average.The 300 was shooting 3/4" groups with 165(?) grain Speers. I'm hoping to have a minor trigger issue fixed in the next day or two, and see what it will do with 180gr TTSX.
Unless I can get the mag box on the 8x68 machined out in a timely manner, it looks like the H&H is the winner!