Shabz, L&B or Strathclyde?L&B explained to me that they condition calibres for the largest quarry, should you choose to shoot rats or corws with your .243 that is up to you.the calibre has been issued with the "good reason" stated as deer and foxI do not think your interpretation of the expanding ammo is correct, you have authority to "posses, purchase or acquire" expanding ammo in relation to shooting deer. that is the good reason for you to have the ammo, not the limitation.It does not mean you cannot "humanely kill an animal" because is not listed as the reason you have expanding ammo.I know that sounds like a double negative but in law the statement must be in the negative rather than implied by omission of the negative.if you have authority to shoot rampaging dogs you can do so with expanding or non-expanding ammo.