I overheard momma is going to buy me a new rifle for Christmas. I have pistols, AR's, SKS's and all versions of 22's. I do have a family heirloom 30:06 bolt action. Disregarding commonality of parts and ammo, to add a new rifle,bolt action, what caliber would you add? Specifically for range and knockdown for deer and upwards. I don't have much choice but I can influence small hints regarding caliber without giving it away. Thanks!