Loading for my R700 LTR, I've noticed data for 52-53gr bullets, using H335 is quite a bit higher with Sierras data, compared to Lee's Second edition, and Speer #12. I am loading Sierra 52gr Match Kings, so I feel the Data should be good, but Sierras max is 27.6gr compared to Lee's 26.0gr, and Speer's 26.5gr max loads. They all start near 24gr. Sierra has specific bolt action, and AR15 data, where the others don't specify, I figure this is the reason for the higher max. Other powders seem to match the other manuals numbers however, what gives with the H335? Any one with other manuals care to look up this bullet, powder combo, I'd welcome the info