I love it when the loading manuals show an overall length. For what gun?? This number varies with each and every gun in existence, except their test gun.
With my Encore, I made up a long dummy round and chambered it, If the rifle didn't close gently, I removed the round gently(maybe with the help of a cleaning rod), and turned the seater down a 1/4 turn at a time until the gun closes easily, then maybe shorten the round 5 thou or so. The good thing is if you have any loads left, you can seat them down a little..harder to lengthen them!! In fact, this weekend, I have to use this technique to find out overall length for some new 100 gr bullets for my 6.5-06 AI barrel. Good Luck!!