Not much of a dog in this, but we have built a few Model 70's, using SAAMI spec'ed reamers with 3.625" mag boxes and haven't ever had a dog. We have used 1-8 Kriegers, usually 24-25". All of them have been very easy to work with, allowing bullets like the 210 ABLR's and 200 Accubonds to touch the lands from the 3.6 mag box which in turn has made finding accurate nodes pretty easy for me. Speeds for the 200 and 210's have been easily in the 2950-3000 range. We do use ADG brass for the guns, but they are about as easy it gets in my opinion. I love the RUM, a close buddy just built the same blueprint, but in a 30 Nosler. The Nosler is a bit faster, but has turned out to be just as easy, also using ADG brass. My advice to fella building an easy rifle he can use for anything is a 300 Win Mag, 1-8 barrel of their choice and make sure it has the mag space for the bullets they wanna use. Usually they end up being bored, since load work is done quick and they just have to shoot them to practice or gather data with them.