I've loaded up several bullets w/ H335 (=surplus 844)and it can make very accurate ammunition. Don't have any of the data with me atm, but according to my information the military used 24.7 gr of it w/ that bullet. I'll post a link to the page below. Sierra lists it with their 60 (23.5-25.6) and 63 gr bullet (22.8- 25.6)- so I'd say it checks out. Just don't start high and you'll be fine.click here for "Duplicating Nato charges" I've not loaded that particular bullet, but have loaded the 193 and 855. You may want to take into consideration that a lower burn temp powder, like W748, may not light those off. That could be good/bad.