9mm ftf due to light primer strike
Quote from Reloader on April 22, 2012, 9:15 pmI just got my dillon 650 xl this week and after taking the time to mount it and set it up properly I have run into one issue so far I can't seem to find an answer for. I created 50 9 mm rounds using Federal cases I had shot once from new, cci small pistol primers, bullseye powder and X-treme 124 grain Plated HP bullets. On 5 of the rounds I had ftf due to light primer strikes. I am using a S&W MP9 Pro and have no other issues what so ever with it. The other 45 rounds fired fine, I did not notice the primer seated differently and did look before hand. Any help would be greatly appreciated.
I just got my dillon 650 xl this week and after taking the time to mount it and set it up properly I have run into one issue so far I can't seem to find an answer for. I created 50 9 mm rounds using Federal cases I had shot once from new, cci small pistol primers, bullseye powder and X-treme 124 grain Plated HP bullets. On 5 of the rounds I had ftf due to light primer strikes. I am using a S&W MP9 Pro and have no other issues what so ever with it. The other 45 rounds fired fine, I did not notice the primer seated differently and did look before hand. Any help would be greatly appreciated.
Quote from Reloader on April 23, 2012, 2:48 pmDid the primers go off on a second strike? If yes, then the primer was not seated deep enough. Primers should seat to slightly below flush, typically .002-.009".
CCI primers typically require a slightly harder impact to ignite than Winchester or Federal primers. Since the M&P is a striker-fired pistol with a lightened trigger, a different primer might enhance reliability.
Did the primers go off on a second strike? If yes, then the primer was not seated deep enough. Primers should seat to slightly below flush, typically .002-.009".
CCI primers typically require a slightly harder impact to ignite than Winchester or Federal primers. Since the M&P is a striker-fired pistol with a lightened trigger, a different primer might enhance reliability.
Quote from Reloader on March 25, 2014, 1:01 amMayor,
I use the CCI primers as well and found that my M&P 9 Pro was light striking due to some brass flakes and other junk building up behind the face (small but noticeable). The particles had gotten between the firing pin and the slide face. Preventing the firing pin from full travel. Once the firing pin was removed, de-burred, and slide socket thoroughly cleaned; I had no more light strikes. I also checked how far the firing pin was able to protrude thru the face once reassembled. Hope that helps.
Jack
Mayor,
I use the CCI primers as well and found that my M&P 9 Pro was light striking due to some brass flakes and other junk building up behind the face (small but noticeable). The particles had gotten between the firing pin and the slide face. Preventing the firing pin from full travel. Once the firing pin was removed, de-burred, and slide socket thoroughly cleaned; I had no more light strikes. I also checked how far the firing pin was able to protrude thru the face once reassembled. Hope that helps.
Jack