Lake City 5.56 brass
- Thread starter rebs
- Start date
I've had that happen with some 5.56 cases, too. It's as if the primer crimp was less pronounced than it is on cases using large primers. Part of it may be the narrower small primers are more rigid and do a better job of helping to push the crimp out during decapping than the large ones do. The primers that are able to seat this way usually feel like they are going in fairly stiffly, though, and not with the same effort in every case. So, I would expect it's going to be conducive to irregular ignition and wider velocity ES.
Marco Califo
New member
I have experienced this. When it happened, I tried to go with it and load them. But it was not every case in the group that primed easily, and enough were difficult or problematic that I ended up stopping my priming, and processing all the crimps in that group. It is not worth it to save a couple of minutes, then waste time fixing it later.
The only crimped cases I've been able to seat primers in are a batch of 9mm cases . I bought 1k WCC-11 and 1k WCC-12 once fired cases , I don't remember which ones but one batch I had to remove every crimp while the other primed like new virgin cases with out touching the crimp .
That is what I do because there's been times I find some cases in a lot that don't need the crimp removed but some did . Running across those that need it just got to frustrating when wanting to move quickly through the priming process . Running them all through the crimp removal process is just less hassle in the long run for me . Or what Marco said
Are these the LC-16 I sent you . I ask because my LC-16 all have the crimp removed but I still get a primer hanging up a tad from time to time . Likely because just enough of the crimp is left to catch the edge of the primer . The primers still seat but there is definitely a resistance that's not there with the rest .
I should add that I prime all my cases by hand so I have a good feel when priming as apposed to priming on a press where you might not feel that slight hang up right before it seats .
That is what I do because there's been times I find some cases in a lot that don't need the crimp removed but some did . Running across those that need it just got to frustrating when wanting to move quickly through the priming process . Running them all through the crimp removal process is just less hassle in the long run for me . Or what Marco said
Are these the LC-16 I sent you . I ask because my LC-16 all have the crimp removed but I still get a primer hanging up a tad from time to time . Likely because just enough of the crimp is left to catch the edge of the primer . The primers still seat but there is definitely a resistance that's not there with the rest .
I should add that I prime all my cases by hand so I have a good feel when priming as apposed to priming on a press where you might not feel that slight hang up right before it seats .
Last edited: