RE: Reloadable brass
This will all depend on how hot your chosen load happens to be. You said a "mid-range" .30/06 load, so I expect that you will see some case stretching (trim every 3-4 firings ?). If you are only shooting one particular rifle with these loads, you can neck-size only, after "fireforming" new brass...and never have to full-length resize again. This will greatly prolong the life of your cases. It's impossible to say HOW many firings you will get, but it is not inconceivable to get 10-15 firings out of a fairly mildly-loaded, bottleneck rifle case. Sometimes, you could get more than 15 firings.
I shoot an 8mm Mauser, for which I reload. I use a rather mild load, well below the maximum. This load happens to work very well for me (quite accurate and plenty of power for the relatively short-range hunting I do). With this load, I have 8 firings on some cases, 9 on others, with no sign of problems. I do as I outlined above - "fireform" on the first firing (after full-length resizing & trimming the new cases, to be sure they are uniform). I do not use a reduced charge for this, though. Thereafter, I neck-size only. I have only had to trim my current cases (two batches of 50 each) ONCE, so far. Who knows, I may get 15 or more firings from these. I will probably discard them at 15 firings (if not before) though - for safety.
But, you see, much depends on the exact characteristics of your load. As well, some rifles (with "loose" chambers), can be harder on brass, than others. It's really very, very difficult to predict.
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