I realize you’re looking for a weatherby. However, since they are hard to come by, don’t discount the Tristar viper g2. They’re essentially the same exact gun(both Turkish imports) Buddy has a weatherby, I have the Tristar. I hand load tss as well, and depending on the choke, I’m getting 230-280 in - 10” circle at 40 yards. With ~200 in the 10”-20”. Trigger in mine wasn’t terrible, mcarbo springs made it decent.
I have no experience with it, but the mossberg sa-20 turkey is also essentially the same. Another Turkish import. I don’t think you can go wrong with any of the 3, and two of them will be a lot easier to find.