Have not tried in a TT, feeds fine in my CZ52 if that helps.
The 31-087T is a proven reliable feeder in pistols and SMGs which don't run flatnosed bullets.
There is now a 93-grain bevel-based version http://www.accuratemolds.com/bullet_...=31-093T-D.png
for the .30 Luger and 7.63 Mauser or 7.62x25 Tokarev