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Posted: 4/11/2014 11:38:58 AM EDT
| I have some 5.56 LC 09 brass (200) and fiocchi sm rifle primers, when seating the primers they are flush, I cant get them to seat any lower .05, crimp has been removed so I checked pocket dept reads between .112 and 119 so I check the primers and they read 120, do I need to uniform the pocket to .122 and if so what's is the easy way of doing this , I have a Lyman pocket uniformer but it wont go deep enough to do the job, not even in a drill, any help appreciated. |
| I'd first check the priming tool and make certain that the plunger of the priming tool goes 0.003" above the bottom of the shellholder, such that when the shell holder is holding the case tightly, the plunger will go almost 0.003" into the primer pocket. In the Sinclair Priming tool, you can adjust that height by playing with the shims they provide. |
First i would seat the primer, turn the brass 180 degrees and seat again. If that fails, seat using this tool.  http://www.midwayusa.com/product/416519/rcbs-ram-priming-unit Lee makes one also, but i use the RCBS.
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I have never seen a uniformed pocket that didn't seat the primer below flush. Foreign brass seems to be more problematic.
At a minimum I would clean the primer pocket, that should gain a .001" or two. Sinclair International sells a good primer pocket uniformer as do several other makers. Chuck it in drill and go to town if it bothers you. Slightly below flush is fine and will not cause problems. Dead flush is bad, protruding above the case head is a no go. Slam fires are likely in that situation. |
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Quoted: I have never seen a uniformed pocket that didn't seat the primer below flush. Foreign brass seems to be more problematic. At a minimum I would clean the primer pocket, that should gain a .001" or two. Sinclair International sells a good primer pocket uniformer as do several other makers. Chuck it in drill and go to town if it bothers you. Slightly below flush is fine and will not cause problems. Dead flush is bad, protruding above the case head is a no go. Slam fires are likely in that situation. |
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Good advice here. Quoted:
Quoted:
I have never seen a uniformed pocket that didn't seat the primer below flush. Foreign brass seems to be more problematic. At a minimum I would clean the primer pocket, that should gain a .001" or two. Sinclair International sells a good primer pocket uniformer as do several other makers. Chuck it in drill and go to town if it bothers you. Slightly below flush is fine and will not cause problems. Dead flush is bad, protruding above the case head is a no go. Slam fires are likely in that situation. If a particular variety of brass continues to be problematical about causing primers to protrude above the case head, I crush the case mouths and turn it into "recycle brass." Sometimes, I use it instead of brass rod for brazing if it pissed me off enough. High primers are not worth the risk. |
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Quoted:
First i would seat the primer, turn the brass 180 degrees and seat again. If that fails, seat using this tool. http://media.midwayusa.com/productimages/880x660/Primary/416/416519.jpg http://www.midwayusa.com/product/416519/rcbs-ram-priming-unit Lee makes one also, but i use the RCBS. It is MHO that the above RCBS is the best priming tool there is. I use my Lee 4 hole turret and the feel is better than anything else, and I have tried everything, even a 21stcenturyshooting one. I was never impressed by any of them. The only one I haven't tried yet is the Sinclair, but that will probably never happen as I'm too chicken shit to spend $ on anything else since I have been disappointed so many times with other brands. This is just MHO, so don't bother trying to correct me as it will fall on deaf ears anyway. |
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