Jerry,
I found your concerns about driving the Barnes TTSX too fast and blowing the petals off interesting and insightful. I have a 1/8 twist 220 swift and I tried the ttsx55gr at 3950 fps and found it an unreliable killer because I believe it was blowing the petals off.
If I remember correctly Dirt Farmer had the same problem with the ttsx in a 240 Weatherby... thinkin the 100 gr Swift a frame may be your huckleberry... good luck on your safari buddy...
