100g partition shot 1/2" groups in my 257 Wea, 71.5g of R#22, fed 215.
I SHot a lot of deer with the 100g Hornady Flat base, 100g Speer BTSp is tougher than you would ever think. Killed everything with 100g nosler ballistic tips also.
Never shot any TTSX, but I bet they are fantastic.