Originally Posted by boomtube
"If there is a better die please let me know."
Nothing is better, few are as good. It isn't a seating die that makes varying OAL, it's varying bullets and varying press operation.
Some of what you're experiencing is variance in bullet manufacturing. I noticed it when loading both Berger VLDs and SMK bullets. The variance in OAL (base of case to tip of bullet) was great enough that I wonder how much is allowable tolerance in the manufacuring process.
I started to use a Hornady Comparator (which measures at the ogive rather than the tip of the bullet). Then I found that although there was variance in the OAL, the measurement to the ogive was within .002
My response is predicated on the fact that the set-up issues others raise are not a problem.