Thinking of buying Tikka T3 Lite in .243. I have no interest in re-loading and was curious as to what is generally considered the 'best' factory ammo and bullet weight to shoot thru' same? I hunt all species of deer in UK and would rather use just one round and not 'chop and change' between species. I use .308 for red/sika, so hunting all others with .243 ! Thanks in advance for your thoughts.