I think the following is the ultimate rifle looney do it all combo:

-.224 Weatherby, only in 1:6.5 twist. Modify a suppressed AR to fire the round if you desire a tactical gun.
-7x57 on an old German Mauser with claw mounts that are impossible to find and about a foot tall. Rifle should be re-marked .275 Rigby to make headstamped brass more of a problem.
-.404 Jeffery. Rifle should be built on a highly modified 1917 Enfield stamped Winchester and marked 10.75x73 to make headstamped brass more of a challenge. It should then be sent to half a dozen renowned gunsmiths at the cost of a small fortune to get it to feed. The third time you send it out for repair, USPS will shatter the stock. The stock maker you paid $22,000 to build the stock will have pity on you and agree to build a new one on a discounted basis for $24,000 (inflation you know) and will deliver in eight years instead of his usual 12 because you are a good customer.

Honorable mention: 7mm Mashburn Super Magnum because a 7mm Rem, Weatherby, STW or .28 Nosler ain't good enough. For extra cool points, get an original built by Art Mashburn.

Once you have bought and messed with the above and are now a thoroughly frustrated old man that has tired of dealing with grumpy gunsmiths that require seven years to execute minor repairs, sell them all at a huge loss and get a .223 Kimber Montana, a Remington KS in .300 Weatherby and a Kimber Montana or whatever Kimber calls it in .375 and go hunt.

Last edited by DesertMuleDeer; 06/17/16. Reason: Add'l info added