I only did it because quickload suggested I'd get a similar burn rate with less powder and lower pressures.
My 336 has an 18inch barrel.
29gr 2206h. 90% fill. 34797psi. 1972fps. 88% burn
To get the same speed (1974fps) with 2208, I'd have to go with 30gr, 96% fill, 36085psi, 87% burn.
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