I'll have to agree with your advice that the .243 isn't the best choice for the beginning hunter but add that with good shot placement it will take even larger whitetails very nicely with the right bullet. Although not the ideal caliber in terms of bullet weight, it is nevertheless lethal if care and skill are exercised with shot selection. I will third the above two posts that the Remington 100grain core-lokt is the best choice for factory ammo in the .243. I swear by the core-lokt bullet; IMHO it is far and away the best choice of any non-premium type of bullet. It my experience, it expands to a decent diameter fairly rapidly, but rarely fragments or separates from its jacket, allowing for nearly maximum penetration, with usually a good exit hole for trailing the wounded animal. It provides the best compromise between trauma and penetration on medium-sized light-skinned game.