I have been reloading for 48 years. I currently load and shoot 43 cartridges ranging from 204 Ruger up to and including 375 HH, 416 Rigby, and 458 WM
The only cartridge I refuse to load for is 300 Win Mag. A totally unnecessary mistake of 1963. Every time i take one on trade, I immediately flog it off so that the rest of collection is not infected by it.
I love all 277 and 338 bores.
Never thought much of the 308 until about 15 years ago i started competing in F Class. I shoot about 3500 rounds of 308 a year now. Got to tell you, i was pleasantly surprised of how capable it really is. Didnt your US Military use it as their sniper rifle cartridge and considered it capable to 800 metres for that purpose.
On another topic, if you think primers are hard to find in the USA,, none at all are getting to Canada.
Long live the 270 Win!!