i have bought 3 REAL (hornady, nosler, and lee) hardbound relading books, and have 5 or 6 paperbacks. and still i have on occaision trouble finding a specific load for the powder/bullet combination i want to load. i think this would be ok, but i want to ask. would i be safe to use data from a heavier bullet, with all the rest of the components staying the same? meaning for example loading a 180 grain jsp in a .300 win mag, using imr 4831, my hornady book has no load data for this. so would it be safe to use the load data for a 190 grain jsp starting load ( 59.4 gr. imr 4831) as a place to start from for the 180 grain bullet?
also, i do not understand why the hornady loads are quite a bit lower loads than either the lee, nosler, or hodgedon manuals i have? why would they do that? (specificaly, in a 300 H&H magnum. their HOTTEST load is 63.5 gr of imr 4831 @ 2800 fps, while the lee, and hodgedon is73.0 gr (compressed) @ 3035 psi. i understand not loading the max load until you work up to it, but this is a HUGE difference. in fact, hornady's max load is less then lee's STARTING load (64.8 grains imr4831 @ 2733 fps). do you think this is just a typo? am i missing something?? the only thing i can think of is hornady uses their own brass. but even that shouldn't account for that big of a difference. heck, hornadys load is basicly a 30-06.
also, i do not understand why the hornady loads are quite a bit lower loads than either the lee, nosler, or hodgedon manuals i have? why would they do that? (specificaly, in a 300 H&H magnum. their HOTTEST load is 63.5 gr of imr 4831 @ 2800 fps, while the lee, and hodgedon is73.0 gr (compressed) @ 3035 psi. i understand not loading the max load until you work up to it, but this is a HUGE difference. in fact, hornady's max load is less then lee's STARTING load (64.8 grains imr4831 @ 2733 fps). do you think this is just a typo? am i missing something?? the only thing i can think of is hornady uses their own brass. but even that shouldn't account for that big of a difference. heck, hornadys load is basicly a 30-06.