I've used large pistol, small pistol, and small rifle. On the micrometer all of them measure one or two thousandths of an inch larger than Winchester primers (but still within maximum spec) so they fit nice and snug in the primer pocket. You'll feel the extra little pull on the handle, and you'll feel them bottom out in the pocket very nicely. This makes about 10,000 so far and every one fired.
The slightly larger diameter is handy in cases with loose primer pockets. At the last IPSC shoot I picked up a bunch of range brass 9mm that a shooter in our squad used for 9mm Major. Winchester and Remington primers were loose, but Wolf snugged right in.
Just make sure you ream or swage your crimped pockets.