redding dies would be my first purchase
-The S series nk die is nice but its a bit of a pain and a lot of extra cash that only comes into play far down the line when precision loading (S series allows you to size very precisely for neck tension) Its good to have but a standard redding nk/FL is fine
-The bullet Seating die, buy a competition seating die with the micrometer. It makes a world of diferance, it practicaly eliminates run out because the entire case is supported when you insert the projectile.
this would be my #1 recomended piece of kit
-wilson/sinclair case trimmer.... I've literally tried them all; RCBS, lyman, lee, Redding. I realy like the redding one its very precise in compared to the rest, but the sinclair one is far better and easier to use. the way the sinclair case trimmer holds the case does not allow it to move at all making for a perfectly straight rim, and does not allow for misalignment of the rim that can happen on other brands (resulting in longer and shorter cases) .
-hornady concentricity gauge, the other brands are fine, but the hornady one lets you fix the problem on the tool... very handy and time saving.
-Case measurement tools:
-prescription MIC set from RBS is incredibly handy to have;it lets you headspace cases, find your land seating depth, and measure land seating distance on finished rounds.
-Head space gauges, lets you check your gun and check your tools
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Calipers; measuring everything, you need to have these
Case prep....
I don't like the case prep centers, I sold mine, I find it was faster and less of a hand work out using a 1/4 cordless driver and the lee case holder. I can zip through 100's of cases in no time and get nice perfect burless rims.