Re: 6.5x284 throat length
I just spent some time determining that my new Savage LRH in 6.5-284 norma hits the lands at 3.190" with the Berger 140VLD. I loaded some ammo at 3.2" but it is too crappy outside to shoot. 3.158" to the lands with a Hornady 129gSST.
BTW, My loaded necked down 284 Winchester brass is .294" neck diameter.