3245 is about all I can run my 300 wby ul at with a 180 grainer. A partition or accubond will lose about 40% of it's wt soon after impact. A tsx most likely about 10%. So, here you have a saum that runs 3245 with a retained wt of 150 grains and a wby with a wt of 108 grains at the same speed. I realize it's not apples to apples exactly but I think I can say without blinking that the saum can now possible excede the performance that made the wby famous 20 years ago before all the new bullets. Pretty cool. Now lets see a powder that will do the same for my 30-378....I'd kind of like to run 150's at about 3900 fps instead of that pokey old 3700!!
