I have the Wylde chamber in my RRA Varmint 24 and have used several 223 FL dies, and even a few neck dies, with no problems. Small base is definately not needed for the Wylde chambering. Redding, Hornady, Forster, RCBS, and Dillon are my favorites. RCBS has the best customer service and Forster has the most innovating dies. Hornady has come a long way in recent years and they are priced right. There are some custom die makers out there if your into benchrest competition, and can hack the high prices.