Since Howa makes the barreled actions for Weatherby Vanguards, you might want to try this yourself before you go out and drop $115 on one of these
http://www.midwayusa.com/viewproduct/?productnumber=552716
The Howa trigger is adjustable:
1. Make sure the weapon is unloaded and remove the barreled action from the stock.
2. There are three screws on the Howa trigger assembly, all three are RTV'd. Remove the RTV from the front and back screws.
3. The front screw is the return spring adjustment (Pull weight): Back this screw all the way out, then install to at MINIMUM 1.5 threads. This is the lowest trigger pull setting that is recomended by Howa. It will give you around 2.5 lbs. Re-RTV the screw.
4. The rear screw is for Sear engagement. Adjusting this screw in will give you a finer engagement and less creep (there is NO creep in my factory Howa trigger), adjusting it out will give you creep. RE-RTV the screw.
5. Reinstall the barreled action into the stock, place a stap cap (or
expended shell) into the chamber, cock the weapon and smake the rifle butt HARD a time or two to see if you have gone too light on the sear engagement. If you don't have any 'slap fire', your good to go.