I have 2 AG Privateers on RimX builds. just ordered them to fit the zermatt/bighorn TL-3......
You can see that the ejection port for a SA bighorn is too long for the rimx, but those don't bother me.....
I've never seen 17 grain bullets in the WSM, only 15.5, 20 and 25's
the 17 gr in the hummer is around 2550, the 20 is around 2350. in the wsm the 20 runs about 2900, the 15.5 around 3300.....