to be honest there is a trend to overgun on everything (I think it makes up for lack of size in their "Johnson").
Im comfortable with my 243 for everything from Foxes to Roe Doe and Boar to Stags, its what you do with it that counts.
I must admit though, my Estate rifle is a .270, this was purchased to comply with Night Authorisation shooting when it was a requirement.
i do understand that the bigger calibres have more stopping power incase you drop it in the wrong place and people get comfort from this.
i also understand that a Volvo is a safe car but I don't buy one just incase I crash.
I have a Volvo XC90 and a Merkel Helix 270, sorted.