I've fired probably 40K rnds using WSR primers thru my 11 yr old XM15A2 AR & finally had a firing pin spall on the end. I attribute the spall due to dry firing over the years. I've fired 10K WSR primers thru another varmint AR of mine with no problems. In all this I've had less than 50 primers not fail to light. I bought 1K Wolf SRP a year or so ago & they all went bang. Wolf primers were cheaper than WSR primers.
Crime Control. NOT Gun Control.