TX35W
I have used CFE223 in both my Whelen and the sons 308. I use standard Remington 9 1/2 primers and don't have trouble with temperature sensitivity. I have use it in temps for -5C in our colder areas upto 38 degrees celcieus in Namibia and as high as 40 degrees celcieus in the Australian bush.
I have had no pressure excursions or problems in the hot weather or slow ignition in the cold. Pull trigger, gun goes bang, eject cartridge no problems.
If you go H4350 in the standard Whelen you get 59gn and that is a very compressed load with the 310s.
I use an 18 inch drop tube and can get 63gn of H 4350 in with minimal compression. This load is safe in my rifle only. All other should work up from minimum. That load gives me 2,455 fps chronoed with the 310gn Woodleigh RN. This is a very potent load and recoil is noticeable. Pressure is still mild in my rifle that has a standard Whelen chamber.
Bob
