Mike,
All of the powder manufactures have web pages and you can down load loading data from them for free. Every time I pick-up a new round to load for I hit all the web pages and down load all the data I can get for that round.
I think that you will find that you will get better accuracy with 50 and 55 gn. bullets in your .223. The twist rate in most .223`s is to fast for good accuracy with a bullet that lite. Try the Serria Blitz Kings if you want the best accuracy you can get. If your happy with 1/2 to 1 in. groups at 100 yrds. the Serria Blitz will do that in my guns and they are cheaper.
Both are excellant varmint bullets.