TMK/TGK info needed.

Looks to me that you have enough bullet in the case as it is. I wouldn't worry about that old wives tale of needing a full bullet diameter in the case. I'd be more concerned in how they shoot and seat them accordingly. The 77 TMKs in a 22-250 are Bad *sses!
I have some of the 90s for my 240 but haven't shot them yet.
 
2.276" max. That don't leave much in the neck. View attachment 604455
The illustration below (.338 Thor) shows where the farthest out "I" wanted my bullet to be seated.
.338 Thor cut-out 300 Berger 3.7 COAL.jpg


 
As far as the TGK goes..
I really wanted to get the 165 .30 cal projectile to shoot in a 300 WSM. No go. So I then tried them in a .308 that's a known accurate rifle and I couldn't get them to shoot in that rifle either.

My dad had a Savage 110 Ultralite that wadded up the 130 6.5 variant.

I run 155 TMKs in one of my .308s and they shoot awesome.
 
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