Thanks for the comments. I have done very little shooting with any fast cartridges; I had a 22-250 Win but the accuracy was much less than what I should have gotten. So, rather than get it reworked, I sold it off.

Search engines pull up info on shooters with WSSM's in kind of a convoluted manner... but after seeing what is reported, between feeding problems and barrel recalls, I will have to set it aside as a prospective buy. Looks like Winchester and Browing put these rifles out way too fast. Problems like that could end whatever chance these have of becoming a viable market item.