Budget? What type of stock is on it now? And what do you expect to gain by changing stocks?
My normal advice is to either keep what you have, or go all the way and get a quality synthetic like McMillan, MPI, Brown Precision etc. Most of the time folks just spend money for what is at best a lateral move, often a step down compared to factory.
It would be extremely rare for a different stock to be any more accurate. If it is then your current stock has fit issues that could be corrected. Most folks want to change because they don't like the looks or fit of the factory stock. Some want a heavier stock to make it easier to shoot, others want lighter to carry in the mountains.
The laminated stocks from
www.boydsgunstocks.com are well regarded and among the cheapest options. They are HEAVY. Weatherby rifles are the heaviest rifles made so the combination is going to be very heavy. If that is what you want, a good choice.
The B&C Medalist stocks are a decent synthetic alternative for around $260. They will be about the same weight as a factory stock, but much lighter than laminated wood. If I weren't going to go big and get a McMIllan, I'd choose this over Laminated wood.
http://www.stockysstocks.com/servlet/the-460/Bell-&-Carlson-Medalist™/Detail
McMillan probably offers the most options in a better quality stock
www.mcmfamily.com They are much better than the other options, but much more expensive. The standard weight stocks will be a bit over $500, the lightweight Kevlar stocks (Edge) just over $600.
When ordering you need to know several things. Is it a Weatherby Vanguard or one of the MK-V's? They use a different stock. Long action or short action? Most 22-250's are short. Barrel contour? Is it a standard weight sporter barrel or a heavy varmit barrel.