Re: Neck up 243 or Neck down 7mm-08 for 260win brass
I neck down 7mm/08 as well, a couple of things to consider though, when necking down with a Redding FL sizing die WITH bushing you will not get the complete neck sized to the shoulder it will leave a slight bulge near the shoulder,(may or may not cause a problem but could cause a headspace issue ) therefore, for the first neck down you should use a FL die with no bushing,or better yet a custom honed FL die to meet your O.D. specs you want for your neck.
I personally like Remington Brass, except for the fact of getting loose primer pockets too quick, I usually end up throwing it away when i feel no bite when seating primers with the hand tool.