QUOTE (TaosGlock @ May 13th 2009 11:16 PM)

I'm using 10.2 gr. PP for 1450 fps from my stock Kimber. PP meters superbly and works especially well with the lighter weight 10mm bullets. It is one of my favorites.
Blue Dot is a great powder too. Takes a bit more to get the same job done and does not meter quite as well.
16# might be a bit light for the Witness for handloads. Might want to check with Wolff to up that a bit.
I can't remember what weight recoil spring used in my full size steel Witness before I sold it, but it was about 20#.
Also do you own a chronograph? They are an extremely valuable and necessary tool for hand loading.
Good luck!
TG
I have another 20# Wolff spring to put into my witness full polymer if it doesn't do well with the 16#. I just thought I would try it first. The 20# is pretty difficult to cycle the slide, but I'm sure I will get used to it after awhile. I got a 22# as well, but don't think it'll be necessary after my last experience with the 20# in my steel.
Any idea on the difference in pressures between the two powders? Like I said earlier, I'm interested in the least amount of damage to my hardware and brass, but still have a decent 10mm round. I haven't ponied up for a chronograph yet. Just bought a CV-750 tumbler today to clean my brass. Almost have everything it takes to successfully reload, still need a bullet puller too. Only complaint I have about reloading is that I am using a single stage press. So it takes me a couple hours to turn out 200 rounds since I first have to decap/resize, expand, polish, clean, prime (hand prime), and then powder and seat, and then finally taper crimp. But it looks like I'm getting a lot better at it.
If I got the process wrong, let me know? Also, after sifting out the media after cleaning the rounds, what is the best way to get all the media dust out of the inside of the brass, or is that even something to worry about? I'm using Lyman media and some of it is getting lodged in the primer cap. Of course I haven't bought a media separator. Just using a plastic collander over a plastic catch bin. I did not add any additives to the Lyman media. Would that help?
Appreciate the info!