Bring back the .303 I say!
I can still remember my first time firing it....there was a batch of us who had never fired it before...but had been told horror stories of the vicious kick!
..On the words 'In you own time carry on'.....Silence...as we all waited for the first one to pull the trigger!
The most accurate weapon in our CCF armoury was a beautifully preserved No1 Lee-Enfield from the Great War period. I fitted it with a Parker-Hale competition (variable aperture) rear sight, snuggled down on the Hythe ranges at the 200 yard point, took the first pressure, regulated my breathing and with the foresight exactly in the centre of the aperture - squeezed the trigger. Resulting recoil resulted in me seeing a large number of stars, followed by something warm running down my right cheek. I still have the scar above my right eye over 60 years later.
It was in the 10-ring though!