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Posted: 5/10/2010 3:40:12 PM EDT
Thanks for reading! 
Wondering if anyone has any experience w/MagTech 7 1/2 Small Rifle Primers for AR-15 loads? I looked on the "Load List" stickied on this forum, and didnt see a single MagTech entry. Curious if they're considered "sensitive" and may heighten the possibility of a slam fire. On the flip side of that coin, I've heard that CCI primers are "sensitive" and may present higher slam fire risk - but that same "Load List" shows plenty of CCI-primed loads. Am I afraid of monsters under the bed, or is there valid concern about sensitive primers and slam fires? FWIW, I'm currently loading my AR loads with Remington 7 1/2 Small Rifle Bench Rest primers... |
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I just opened a 5k box today, gonna use them for blasting loads.
They have an O imprinted on the primer. Sure way to ID these. CCI's are good primers. I use the Rem 7 1/2's for my precision loads. The key to preventing slam fires is proper primer seating. Primers should be .002 to .008 below end of case. You should inspect each round. I like to uniform my primer pockets, makes primer seating a breeze. I chuck my uniformer in a cordless drill and it goes fast. 
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| I have gone through about 700 of these Magtech 7 1/2s now. They all have functioned flawlessly, and I have been able to shoot some pretty darn good groups with them too. The only complaint I have with them is that it can be difficult to get them started into the primer pocket straight with some cases, especially swaged primer pockets. |
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I have used several thousand of them and really like them. I have had a slam fire or two, but found it was my fault for not seating the primer completely. I just ran out and have moved to my CCI primers. These are noticably harder to seat as they are harder cups. I prefer the MagTech's if I can find more of them. |
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