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Re: Reloading 7mm Rem mag
If you are getting new brass, I would recommend Norma for the 7mm Rem Mag, that is what I use.
I usually resize new brass just enough to make the necks round. I'll lightly chamfer the neck to ease the bullet seating process. I uniform the flash hole and the primer pocket.
Then after it's fired once, I'll trim the lot to a common size (will trim them all to the length of the shortest piece of brass). I'll then chamfer lightly the inside and outside of the necks and polish the inside of the neck and the chamfer area with some steel wool (wrapped around a bronze brush chucked in my drill press for the inside of the neck and some steel wool stuffed inside a socket that is chucked into my drillpress for the chamfer area).
Then reload as normal. I always measure the headspace of my once fired brass and try to match that with my full length resizing. I use the Hornady cartridge comparator kit (headspace case gauge kit) and my calipers to measure and document the once fired length.
I always work my loads up over a chronograph, so I know everything about ever shot I take.
Hope this helps.
The 162gr bullets and the H4831 will work just fine to get you started. Do a search for 7mm Rem Mag in the reloading section for tons of additional info.
Good luck,
AJ
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