RE: Do I have it covered ?
17, 204, 243, 7MM, 338
The only gaps/missing parts I could possibly see/imagine would be something in the .270-30.06 range, the 7mm Rem Mag is a magnum...so I see a slight jump between a .243 and the 7mm mag. Though i suppose if the .243 isn't enough the 7mm will be, you just might be carrying more gun than you have to. The .338 does have enough for all of NA, though I'd like a .375 or bigger to cap it off, though it's not essential.
My personal ideal battery would be...
.22LR, everyone needs a .22LR right? Have.
.204 Ruger or .22-250 Rem, not sure which. Don't have.
.243 Win. Have.
.270 Win. Have.
.300 Win. Mag. Have.
.340 Wby. Have.
.375H&H Don't have.
.416 Ruger Don't have.
.458 Lott Don't have.