300 wsm out of a stevens 200 ????

i was just wondering if it can be done with a short action 200 or not and if so what all would i need and what cal to start with?

Yep you can do it. Not sure cal is going to matter a whole lot. You'll need to replace the bolt head no matter what as you'll need a magnum bolt head if you use a short action. Of course you could build it off a long action in a mag cal and this should work just fine. Might even give you a little extra room in the mag to seat those bullets out a little longer. Is this a newer centerfeed model you are working with? You'll also have to order a barrel since I doubt you'll find a small shank in 300wsm off the shelf. I'm sure others will chime in before long with lots more info. Several guys have gone down this road. I looked at doing the same thing for a while until I came across a 300wsm used in a shop with accutrigger that looked like it had never been shot for $290.

You'll also need a short action magnum firing pin.

so bolt head, firing pin, barrel, and do i have to get the mag for the 300wsm as well?

i plan on using a shaw 26" mag contor barrel,and timney trigger

You would have to change the mag depending on the model stephens you get. If you get a stephens in a magnum caliber you might not have to change the mag.

if i build one it will be on a short action so i think ill have to get the mag thank youall

Just did one of these myself on a model 10 tactical that started life as a 308 barrel that I had rechambered to 300 WSM. Do yourself a favor and call Sharp Shooter Supply. They will send you everything you need (push feed ultra mag bolt head and firing pin) for very little money.
John