Hello Guys I am new to reloading and have purchased a kit
http://www.cabelas.ca/index.cfm?pageID=71&ID=22998&skusearch=7417
I will be reloading .223 caliber first, with winchester new brass, do you have to resize new brass or is it good from the factory? I am also assuming that you don't have to run it through the resizing die? Any other tips or tricks would be greatly appreciated.
I would put it far enough into the resizing die to pass the expander ball through the neck. That is all you should need to do. It will make sure any dents are removed, and the neck ID is uniform.
A tip if you are reloading for accuracy would be to use Lapua brass. It is the best, and Winchester probably the worst. Brass can last 40 loads or more if you neck size only, and anneal every 5-7 loads. You could square up the neck face with your trimmer, but try not to remove any significant amount, as they are likely too short already. Also chamfer the edges slightly after squaring up.
Again assuming you have a bolt gun and are shooting for accuracy you will want to measure the distance to the lands in your gun, so you know how much jam or jump you have in your loads. I would avoid trying to just kiss the lands. Here is a tool set up to do it.
Measuring to the Lands
Here is a good link to read up on your cartridge, and what generally works and does not. Part way down you will see a pic of two boxes of Sierra bullets. Click to get Sierra load data. One is for bolts and the other for AR's.
.223 Cartridge Guide
Also here is a good link from on of the GunNutz sponsors, Jerry at Mystic Precision. Has some really good tips on how to load for accuracy.
Reloading for Benchrest and Varmint Rifles
About the only thing I would take issue with at the link is the annealing temperature mentioned (475F). I believe you have to get up to 800F to anneal properly.
Again if you are looking for accuracy, I think Berger sets the standard for bullets (at least of the readily available ones). Here is a good reference sheet. Make sure you stay within your barrel twist for bullets.
Berger Bullet Data Sheet
If you have not bought dies yet, I would suggest Forster. And again if for a bolt gun and accuracy, I would go with a Bushing/Bump sizer, and Ultra Micrometer seater. Here is a thread discussing the pros and cons of Forster vs Redding. My opinion is that Forster is less expensive and at least as good, if not better. The history is that Forster used to be Bonanza. When the original patents by Bonanza expired, Redding started to try making copies.
Redding vs Forster
You can get them from Hirsch Precision and I believe Mystic Precision as well.
Hope that helps in getting started,