ATHiker07 - just get one of the 40+cal nitros.

Rechambering a double is not that simple, i.e.: 458 to Lott. The barrels are regulated so that the bullets strike at relatively the same point of impact at a given distance.

Not only would the 458 be an inferior choice to one of the larger, lower-pressure cases, but even if you did rechamber it to the Lott, the increase in velocity would no doubt require re-regulating the barrels.

There are some affordable doubles out there... heck, given the eight or more months it takes to get one built - you put down a deposit with the order, then you've got several months of interest-free "financing" before delivery date!

Just get creative in your thinking... you'd be surprised how easy it is to justify the purchase of another gun!