Well I've just done load development for my 17" barreled model 7 latte'o'8
44gn of 2209 was my starting load and was good for 2460fps
44gn of 2208 was max load well over book max and gave 2706fps
Not sure which is faster burning but the 2208 was definitely way better velocity per gn of powder in my short barreled rifle.
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