Thanks again for the replys,
Guys, i think that part of the problem is i may not be using the correct terms. I have a lee collet neck die along with a lee full length die. What got me looking into higher quality dies was a i purchased a RCBS case master, and i measured the consintrisity (my spelling sucks and its early please forgive) and most of the brass was between <.001 and .002. My dad had just bought a new sendero so his fired brass would not chamber in the new gun so I had to full length the brass. When the brass came out of the FL die it was no longer in thoes ranges, more like .005 to .008....I posted a question here and the opionon here was bent decapper/expander rod. There were a couple of people who suggested redding type s dies as i guess they will not cause this issue. I found the neck die and seater first and have ordered the type S FL die. The redding wep page is where i found the suggestion to turn the necks. so i guess that consitristy is not a measurment of neck thickness(but a major cause of bullet runout???)but how round the nech is? Like i said im a novice reloader and more like a sum what educated redneck than an engineer.
Some other info:my Dad,uncle and myself all have 300WM (since I was new to reloading and we were all new to long range shooting/hunting we thought this would simplify things for all of us. They both bought sendero's and i had a 700 action so i had Krieger build a gun for me(but i didn't do anything custom with the chamber just cut to min sammi specks)