I'm with S1--go with the .290" nk. My 6.5-284 has a .290" nk. and I only use Lapua brass. You can turn one a minute with the Sinclair tool. I use the K&M tool, which is similar to the Sinclair.
Are you having your 'smith bush the boltface since you are using a magnum(.532" boltface) donor action? You shouldn't have a problem using it as a repeater, as the action is long enough, but the follower may have to be changed and tweaked a little.
I'm still working up loads, but my next powder will be H1000. A buddy of mine's 6.5-284 really likes 142 Sierra MKs and 57.0 gr.I hope mine is that easy to work with. I have tried H4831SC, but max velocity was about 2950 and accuracy was only so-so.
I'll try to do an update on it this spring, but I have 3 rifles to work up loads for, and work is keeping me pretty busy.
Good luck with your project, It will be a blast... [img]images/icons/wink.gif[/img]
[ 01-16-2003: Message edited by: Chris Jamison ]