Have seen some 127 LRX loads for the 6.5 Creed and RL26 with impressive numbers .Any one here have any experience with this combo ? And if so did you use mag primers?
In the 6.5x55, 25-06, 280AI the magnum primers did better. In the 243 standard were better. Now I start my load work up with magnum primers as it is safer to drop back to a standard primer than the other way around. Completely agree on the +85 degree temperature sensitivity. Not a problem most of the time but you need to be aware that a hot barrel will have the same affect. Use the Berger data as a velocity ceiling and you should be fine.
If you don't have R26 already, it is hard to get, and due to the stability question I would go to R23 or R16. These are not that far behind velocity wise and they perform better in hot weather.
