thru 2k, zero failures with Wolf LPP
thru 1k, 1 failure with Tula 223
thru 3k, 15ish failures with Tula SPP (silver color)
So, I saved about 30-40 bucks on Russian primers but had quite a few failures.
I gather some sketchy SPP were sold under the Tula banner a year or two ago, that were silver in color. The current production is brass colored, and I haven't heard too many complaints about them as of late.
But I don't buy 'em anymore, unless I have to.
thru 9k of CCI/WIN/REM primers, zero failures. Kinda explains it.