Originally Posted by southtexas
Hey guys Never tried the 100TTSX in my Bobs. But the 80gr TTSX at 3400 FPS is very accurate and seems to kill well out to about 300. Any reason to believe that the 100gr would perform better?

The 100 gr. .257 TTSX has a higher S.D.(.216), vs. the 80 gr TTSX (.173). May be OK at 3,400 fps.

BUT, out of my .240, an 80 gr TTSX with S.D of .194 at 3,600 fps, had suprisingly poor terminal performance on a WT doe. Huge blast effect on the chest wall, very little destruction inside the chest cavity, just a pencil thru. Deer ran 100 yds in the woods at night. Took a while to find her with flashlights.

And, the .243, 80 gr. TTSX has a better S.D. than the .257, 80 gr TTSX, (.173). Too fast with low S.D on deer sized game can be less than impressive, IMO. I went to 100 gr. NPT's in the .240 and have never looked back. No more 80 TTSX in that one.

The 100 TTSX at 3,260 fps out of my Roberts seems to transfer more destruction inside the animal with better terminal performance. Here's a link to my .257R project. It also did very well with the 115 NBT over 44 gr. H-4350. www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/10163944/5

DF