My kids and I have used the following (that I can remember):
.223 rem - k
.243 win - k
6.5G - k
.270 win - k
30-30 win
.308 win - k
.30-06 - k
.300 Roy - k
Underwhelmed by performance of .223 and .243, but the .243 was a small sample size. .223 left very little by way of blood trail with 62gr Barnes bullets even when perfect shots were administered. 65gr SGKs were better. I know that some have experienced different, but that was the case over several deer.
308 win has yielded a few bang flops with youth loads (125 NABs and NBTs, 110 TTSXs). 6.5G the same, but full house loads with 123 SSTs and Amaxes, 100 and 125 NPTs.
.270 win has killed with consistent authority (bang flops) when using 140gr Accubonds, but I have not experienced a single bang flop using 140gr Interlocks at similar or higher speeds (4-5 kills), but always get pass throughs and short tracking. Have also used 140 SGKs to similar effect as Interlocks. Blood trails are always impressive, and I have not used a 140gr Accubond in several years since they have been so hard to find.
30-06 has killed with consistent authority when using 165gr Accubonds, but like above with the .270 I have gotten very few bang flops out of Interlocks. Always get pass throughs and superb blood trails.
300 Roy was a sample of 1. 180gr Accubond, bang flop.