Question about some small Rifle primers

[Hidehunter]

Well i loaded up a 150 rds of 9mm and used small rifle bench primers. I know you can use small rifle primers and my Ruger RS 9 shoots them great. All i had was the bench primers and never really thought about havin any problems. Well i was getting 3 out of 5 missfires. Have any of you tried bench primers or do I have a bad batch of primers? Ive had them for a couple years but just havent used any of them. Guess Im gonna go start pulling bullets 

[riverboss]

Im no expert but it sounds like youve got some bad primers, If regular small rifle will work they should be fine to use.

[CCP]

  Rifle BR primers are thicker and may be  your problem in the pistol. I have shot BR rifle primers in revolvers with no problems but had trouble with them in a P08 I had and haven't tried them in any auto loader again. It was only like 2 out of 50 that didn't go bang but that was enough for me.

I use small magnum pistol primers in my AR and have been told I could have a possible slam fire because of the thinner cup but no issues so far.

[Hidehunter]

  Rifle BR primers are thicker

I believe thats my problem right there