Hornady 100gr Interlock for hunting

[Rickhem]

I have a box of these from almost 20 years ago. Bought them for a .243 I had, but ended up shooting the Sierra 85 in that rifle. I've shot them in my 6ARC, and got just over 1 MOA, but have been trying to get other bullets to group better. I've been trying the Sierra 85, the Sierra 90 TGK, and the 95 SST with nothing staying under 1 MOA yet.
I just might go back to the 100 interlocks and see if that will respond to some tweaking. That bullet has been around for a long long time for a reason.