I will not load SSTs in anything I'm gonna deer hunt with they are very frangible and seem to explode on impact. I'm not a fan of the 277 130gr NBTs either. That's just me personally, a lot of people love them and have great success with them the .277 NBTs 150grs seem to hold together better and usually exit but I'm gonna pull all the ones I have loaded and reset with Accubonds. I'm pushing these at 3060fps using RL26. The NBT, Accubonds and the Partitions all hit the same POI so if I ever get a chance to go after Elk I'll swap to a Partition
The Accubonds kill elk, too. No need to change to a Partition for elk, unless you just want to.