I'm not loading any .308's at this point... but did a quick check of my 7mm components... Again I'm wondering about the semantics... This time between the Manual writers, and the Bullet manufacturers.

My Barnes Triple Shocks don't actually say "caliber" just 7mm (.284) They're at least 5 years old so can't say about today's packaging. But... My Nosler Accubonds do list the caliber as 7mm (.284).

I don't own a Barnes manual ( I called them and they were good enough to snail mail me the data I was looking for... Thought that was pretty cool) I would be interested in how your Barnes manual classifies the .308 Winchester vs. how the current Barnes packaging classifies the .308 bullets... Semantics Manufacture designation

Either way, again, I hope that the OP is catching on to what we're discussing here.

When buying a new rifle, many offer different "caliber" options, but in the end you are actually buying a "cartridge" offering. Two of the offerings he mentions are designated as .22 calibers, but are different cartridges. We're currently having the discussion about his 3'rd option.

Hopefully as the OP reads this it prompts him to do some further research, rather than just take some random online advice, even if that advice in this case has been overwhelmingly for the .308... I know that it has prompted me to do some digging myself. Tho for other reasons.