I've just started playing with youth loads for 260 and 7mm08. Got some data off a US website from a chap that had disassembled the factory Rem reduced recoil loads. The factory used 30 gr of imr4198 in both 260 and 708 with 120gr bullets. For around 2400 fps.
Hodgdon says that you can download 4895 (2206H) to 60% of max loads for that powder in that cartridge. But my testing thus far shows much better accuracy with the imr4198.
I'm thinking young ones are unlikely to take shots at animals beyond 200 yards, so as long as your load hold 1000 ft lbs to that distance it'll be sweet.
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