Indeed!!

However this doesn't always work. One of my Knight makes a perfect fit using W209, and as you describe has zero blow by, what i mean is zero blow by. The other Knight won't fit any primer made perfectly, and so far it is quite clean using the W209, but it isn't what one would say is zero blow by. Two of my Omega use W209 with a perfect fit; the other doesn't. For the odd Omega, i am using a modified breech plug that gives a nice crush to STS primer, but it cannot use W209 primer.

CVA rifle are made looser than Knight or TC, and to get a perfect fit with any primer, one needs to adjust the headspace by backing out the firing pin bushing, and shimming it.