The last few at Plum Creek Shooting Society have been 161 pistol rounds (23 mags) over 6 stages. And 7 to 10 rifle each stage, or maybe skip rifle on a stage. Shotgun 6 rounds on a few stages, 4 on others. Texican Rangers WB matches had less pistol, but their new president, Aesup Sleeve, is really big on WB and likely to up the round count. Personally, I'm hoping they will be lowering those numbers while we are in this situation.
When WB rules changed from 5 in the mag (which was great for sharing ranges with CAS) to 7 in the mag, I figured okay fine, now there will be less mag changes. So a stage that before had 4 mags for 20 rounds will now have 3 mags for 21 rounds. But noooo, now it's 4 mags for 28 rounds. Bottom line, round count for WB is considerably higher than CAS. But it sure are fun!