check with the guys at er shaw barrels they hooked me up with a varmint contour for my 110 and it does .500 and less at 200 yds right now after some load development.
Those guys will put together anything you want they will even do the action work if you need them too and let you know what needs to be done if anything.
If you just order the barrel then they will send it to you in the white or stainless unless you have them do the bluing its an extra cost and I found that a good rattle can of wood stove paint holds up great and I have sent at least 100 to 150 rounds through mine since I put it on.
You can do the install yourself but keep in mind that you need to be really forceful with a hammer to break that barrel nut loose. drill out a piece of hard wood to fit the barrel put it in a vise, a strong vise and slide the lug wrench on and whack it good, its a bit scary the first time but do not fear they seat it well at the factory so this is necessary. I used a spent casing for head spacing but I have done this a couple of times so you might want to actually get the tool for setting head space and then you're done.
Good luck and good shooting!
