If shooting in the heat stay away from the 26 as it's not that stable in the hotter temps. Living in Az I gave up on my 26 loads due to pressure spikes in the heat. Just sold all my RL26 this past month.
What is your recipe with the 280 Ackley with 4831sc??I've had great luck with 139 LRX and 168 VLD-H with 4831sc in my 280ai. I've tried RL23 with both fed210 and CCI250 primers with the 168 VLDs. It gave great speed but I couldn't get the accuracy everyone else seems to get.
62 gn with the 139 LRX .05 off the lands works great in my rifle.What is your recipe with the 280 Ackley with 4831sc??