I have used Wolf small pistol, small pistol magnum, small rifle magnum, and large pistol with pretty good results, but some signs of poor QC. The problem being anvils falling out of the primers while they are loaded into the pick up tube.
Another problem was failure to ignite in my S&W 9mm M&Ps. Apparently they are a little too hard to ignite in these pistols (two or three FTFs per 100). This problem did not occur in my M&P 45. The problem did not surface in my 40 Glocks and the Wolf small rifle magnum primers have worked flawlessly in my Para .40 for over 10,000 rounds.
At this point I consider Wolf primers great for practice but would prefer good old WW for match use. The one exception would be the small rifle magnum primers in the .40 Para and 223. Also, I have seen no difference in results on my chrono; these primers give consistent results comparable to my favorite WWs.