You didn't say specifically which pulled military pulled bullets you have. If the bullet you say weighs 822 grains is the yellow-red tipped M48 Spotter-Tracer bullet normally 833 grains then it is not designed to be loaded to 50BMG velocity or pressure. It was designed for much lower velocity and pressure and HAS to be down-loaded in the 50 BMG to no more than 1800 fps and with a reduced powder charge. Normal load data for them is for 170 to a maximum of 180 grains of a powder such as IMR 5010.
Normal start charges for powders for 5010,870,860,872 military type powders are 647-650 grain bullets--start at 210 grains
----------- 700 grain bullets------start at 205 grains
------------750 grain bullets------start at 200 grain
------------800 grain bullets------start at 195 grains (NOT for the yellow-red tipped M48 Spotter Tracer bullet)
Really need to know what exact pulled bullets you have, what powder you intend to use, and possibly which gun you intend to shoot them in. Hornady has some data for their 750 A-Max bullet, Hodgdon has some data for their powders, Vihtavuori has data with their powders and Accurate Arms lists data for their powders. Also the start charges for 647-650 grain bullets would be ok for start loads for 630 approximate weight up to 643 approximate weight bullets.