i bet Hybrid 100V is a decent choice, without consulting my guides
For pure performance, no consideration of temp sensitivity, H100V is about the best performer for the Roberts, like 3,200 fps with the 100 TTSX. And in my Brux barrel, sub half inch. And that load is a real killer...
DF
10-4 , ive heard good stuff about it in the Roberts. I just picked some up and started using it in my 375 for practice loads, just using Hodgdons start load and a sierra 300 GK. 70 cents or so a shot ill take it.
havent put it in any 25 calibers yet , but have read about its temp / velocity fluctuation.
Im in hot louisiana as well as you, so thats a deal.
