Went out and was testing some 30-30 rounds I loaded 100 rounds 50 with 150 and 50 with 170 using sierra and hornady 25 of each. The load is with reloader 7 one that I have used for about 20 years but here is the rub out of 20 rounds 2 didn't go off I was using Rem primer's for the first time(CCI was my STD in this load) I bought some last year form midway 2000 to be exact (on sale) groups went from 1 1/4 to 1 3/4 inches with peep sight that about what I normally do with this marlin but havent had a misfire in more years than I can think of I still have 80 loaded Im going to take them apart. What should I do with 1900 other primers? This got me shook up a little? Any one have the same problem with Remington primers hope not!