I see the SST's looks like they have a cannelure..
I haven't tried them but I have an unopened box of Hornady 85 grain BTHP. Have you tried those?My preferred bullet for the 243 Win for all applications is the 85 Sierra BTHP but if you can't find it, I've used the 90 Nosler BT on deer and it does fine, just avoid shoulder shots.
Not only have I tried them - they are my all around go to bullet for the 243 Win. I've used them on varmints, predators, and white tail deer. Match grade accuracy with excellent terminal performance.I haven't tried them but I have an unopened box of Hornady 85 grain BTHP. Have you tried those?
Now that you mention those bullets, Blue Collar Reloading has some.https://www.bluecollarreloading.com/collections/hornady/products/hornady-6mm-90gr-eld-x-2441May have some 90gr eldx, will have to check.