I'd cast a vote for the RCBS Rockchucker Supreme Master Kit and a set of Redding Deluxe .223Rem dies (the 3-die set with both the neck and full length size dies is a good value and makes great ammo).

If you're shooting your new varmint rifle at varmints, then I'd look into either Nosler Ballistic Tips or Hornady V-Max bullets. I've found that my Ruger .22-250 really likes the Nosler 50gr Bal. Tip BT.(I've got several targets with <.5 MOA groups at 200 yards), and shoots 55gr Hornady V-Max's OK (.75 MOA). The Noslers are a couple dollars more, but I've found that they are much more consistant than the Hornady's.

If you just want to punch paper exclusively, then you might try Sierra Match Kings.

Just remember to take the twist rate of your rifle into consideration when selecting your bullet weights. I'm not sure what the twist rate of your Sako is, but the twist rate of .223 rifles vary a lot these days.

Mike