UNIS GINEX PRIMER LARGE RIFLE 5000/CS

These are very similar to CCI-34. They are designed to meet the NATO spec for 7.62 ammunition. They can be tighter to seat than some US made primers, and may be unreliable in rifles with weaker firing pins (external hammer guns etc). They should probably be considered to be a "magnum" primer for load development purposes. Some people complain they are hard to seat, but I use a Lee Ram Prime and have had zero issues. I can also confirm that they perform well in below freezing conditions.

I started priming 7.62x39 cases with these and broke my Lee Auto Bench Priming tool. I was able to get them to seat fairly well with that until it snapped. That took quite a bit of force, but did not deform many of the primers. I do think that process was tough on the case rims. I tried my hand primer, but could only get the primers to seat 2/3 of the way in...then went to the single stage lyman, which also did not deform primers. It gets them in almost perfect...but not seated that 1 or 2 thousandths more that I wanted. I was trying to get these in good for the SKS, But, I am a little concerned about a possibility of a slam fire. These did go better into cases I suspect of being European, like S&B and PPU. The others that worked best appeared to have slightly worn primer pockets. I believe these are better than no primers at all, but I have relegated them to making the 30/30 or other bolt gun calibers, where I don't have to worry about a floating firing pin. (And, where going slow doesn't bother me.)

I found, upon testing, these primers (large rifle) using my accuracy load and three different cases (RWS< Lapua and R-P) that they gave consistant performance within their respective cases. They also performed more accurately than some of the other more popular and expensive primers. Yes, they are tighter than most primers but I didn't find the deformed or difficult to load. I'll stick with these for my match loads.