Bill - I checked around and couldn't find any loaded Lapua in the US for the 6.5 X 284. The loaded ammo you mentioned was for the 6BR
Mazzy - From Normas web site: For technical information from Norma try e-mailing Ã…ke Nilsson [ake.nilsson@norma.cc] at Norma and he should be able to give you exact specs and maybe even suggest a distributer in the states for Norma ammo. His phone numbers are also listed on Normas web site Tel: +46,0)571-315 16 Fax: +46,0)571-315 40. I've exchanged e-mails with him in the past and he usually answers fairly quickly, usually next work day.
To be honest, you would probably be happier with the results if you just waited for your Lapua brass and dies to come in and roll your own. The Norma loaded ammo, if there is any to be found, would run $35-$40 per box of 20 plus shipping and hazmat fee and the brass quality wouldn't even begin to compare to Lapua.
On the issues with the 6.5 X 284. I have found it better to use a full length sizing die set up to just bump the shoulder about .0015" or so. So that the fired case will just chamber with very little extra force required to close the bolt. This works the brass a bit more than using the carbide insert dies where you can select an insert diameter to size for the amount of bullet pull you want but they only size about 2/3 of the neck. The best solution is to have a full length die honed to exact diameter in the neck for the amount of neck sizing desired. Helps prevent donuts.
Otherwise pick a bullet and stick with it, 139 Lapua Scenar or 142 SMK for a 1-9 twist. 123 Scenar for 1-10 twist. Barrel life will be too short to play with to many things. Most serious match shooter end up changing barrels at 1000 rounds or so. Decent accuracy should last until 1600 or so.
Lets see, depending on twist 123 Scenar, 139 Scenar or 142 Sierra, CCI primer, H4350 or H4831, Lapua brass. Some combination of those components should get you shooting very well.