CAUTION! The 7mm Remington Magnum is sometimes a little tricky to load for. First of all, it requires a SLOW POWDER. I have loaded ammo for mine ,a Ruger No. 1B, since 1968. Back then, the original military surplus H4831, H870, and Norma N205 powders were close to being ideal powders for it. But these powders are no longer available. I have found that the best current powders for my particular7mm Rem. Mag. are Re22, IMR 7828SSC, and, if you can find some, Norma MRP1. You might also try these powders in yours.

One factor complicating the loading of the 7mm Rem. Mag. is that in some (but NOT ALL) guns, for some reason, high pressures are reachedbefore it reachesdecent ballistic levels. For example, when it first came out, the factory loaded the 175-grain bulletto 3070 FPS;today, that same bullet is listed in factory charts as achieving only 2870 FPS, or about the same as a good .280 Rem/7X64mm load! The reason for this seems to be that a number of 7 Magsdevelop too-high pressures with the originalloads.

If you look at today's reloading manuals, most seem to also show relatively low-velocity maximum loads for the 7mm Rem. Mag. There has to be some reason for this other than lawyer-itis, I suspect.

So when you start developing loads for your particular 7mm Remington Magnum rifles, it is doubly important to start with the recommended starting loads and work up very slowly and carefully, and to know enough about signs of too much pressure so you can quit increasing powder charges before things get dangerous! That said, if you know what to look for, it MIGHT BE possible to develop a good load for yourspecific 7mm Rem. Mags. that out-perform the maximum loads shown in a given loading manual - but you have to be able to read pressure indications!

I don't use any of the loading data shown in any current manual, because my particular 7mm Rem. Mag. shoots much better with heavier loads than shown in the manuals, both as regards ballistic performance and accuracy as well. (When I want 7X57mm Mauser ballistics, I use a 7X57mm!)

If you want some good load data for the 7mm Rem. Mag., I recommend that you go to your local library and see if they can locate a copy of Bob Hagel's book, GAME LOADS & PRACTICAL BALLISTICS FOR THE AMERICAN HUNTER. You can substitute Re22 powder or IMR 7828SSC for N205 or MRP in STARTING LOADS. Re22 is about like N205/MRP, and IMR 7828 is even slower than N205.....