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Posted: 10/29/2005 5:26:49 PM EDT
| I saw some reviews here and decided to get 500 M855 from Adcom. I inspected and found 9 bad cartridges, I expected that, 6 had split necks, 2 were bent, and 1 has a large dent. I took 100 to the range to shoot with an Ar15 20" (Stag lower/CMT upper, Del-Ton build). I shot 40 Lake City M193 with no problems. Seven of the M855 were missing primers after being fired. I had several non-feeds (bolt not picking them up) and a few ejection problems. I could not locate any of the missing primers, not in the weapon or on the ground, ???? Guess I will use the rest for plinking but I doubt I will buy any more. YMMV. |
| Your's is not the first post to report "missing" primers. I have had no problems with mine at all tho. What is interesting is your report of dents ding and splits. I have looked at a LOT of mine and I have seen nothing of the sort. The only thing I have seen was one round had a TINY ding and I mean tiny. All were shot out of Either a Colt A2 or a 6920. No issues at all with primer loss. I wonder if a certain lot number is causing problems? All mine is 99 dated. |
| AH HA! So I'm not the only one with blown Adcom primers. I'm sorry to hear about it and I feel your pain. I purchased a 500 rounds box and have most of it left. I wont shoot the rest thru my AR due to the problems the loose primers rolling around inside my gun caused. I did shoot some thru my bolt action Savage. It grouped OK at 100 yards, but Black Hills did better. |
| I did some more testing and took a closer look at the primers. I started with a mag of Adcom and experienced a blown primer. I then shot just XM193 and then just Black Hills. All the XM193 shot fine without a primer problem. All the BH shot fine also. The only time I had a primer problem was when shooting the Adcom. I took a file to the silvery finish of the primers that I found in the gun and they were all brass colored underneath. |
| AIM did me right today by taking back my remaining 350 rounds from the 500 round box I purchased early last month. I asked if they had heard any complaints and the said they had not. I explained my problem and Eric was very nice and told me to bring in what I had left for a refund. Now thats what I call customer service! |
AIM has always been more then polite whenever I have called. Has given me lot numbers and case head markings when I have asked. Can't get any better then that. Always prompt shipping but once and that was when they were waiting on some SKS strippers they had ran out of. |
| I inspected my primers and found 14 rounds out of the 500 that did not have the red stuff holding the primer in. I would suspect that the lack of this stuff is what is causing the primers to fall off, there was some boxes had one or two in them never any more. I have still not fired any and removed these rounds from the boxes. |
I have always dealt with Eric whenever I called. He has always been very helpful and courteous. Definately an asset to the company. |
I got my 1000 rounds the other day, and did a random inspection of some rounds from various boxes. They all seemed in good condition, although some had a little more red sealant than others. I will inspect each and every round before taking it from the box and putting it in the ammo can for the range, and discard or label as suspect any round which seems at all defective. I'll let you know how it fires for me once I get my SEBR  .
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The red stuff doesn't hold the primer in, it keeps the water out. It's a waterproof sealant. My guess as to the blown primers is the ammo is loaded a little hot, and in combination with tighter chambers (even 5.56 ones that may have been cut with a resharpened reamer) is causing elevated pressures. Some of the velocities that Hoosier_Buddy posted are 100 fps over normal velocity for a M855 load. |
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