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Posted: 1/13/2009 2:26:14 AM EDT
| I finally got around to loading some 50bmg and now I have seating issues. Can't get the CCI 35 primers(brass colored flat style) to seat completely flush with the case. I measured the primer height and primer pocket depth and they are nearly exact. It looks as though the primer anvil is protruding some. loading on a Lee .50bmg press using the primer arm. The primer pockets have been reamed but I still have to knock off the crimped edge a little, primer installs very easily and then bottoms completely out but is still sticking past the case head a few thousandth's. Any ideas, thanks? Oh, and brass is LC 40's era once fired. |
Just measured a few more of the primer pockets again, all around .200", Crap! Can the cases be reamed? Due to the military crimp I'm sure these had a primer in them at some point and time.
Edit: Just talked to CCI, yep I'm fubared  . My primer pockets are too shallow for the standard CCI primer. Tech said there was never any exact specs for the 50bmg and you'll find variances, especially with military cases. Wondering if I can ream the pockets some. Got too much invested in the brass and primers. Wonder if Hirt primers are smaller. CCI's are .210 height.
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You should be able to use a uniformer to get to the maximum depth.
http://www.wideners.com/itemdetail.cfm?item_id=6949&dir=210|215|218 Unfortunately they don't have any in stock. I am starting to put my reloading list together. I uniform all my .223 and .308 to make sure the primers are seated to the maximum depth. Kind of a pain, but you can do it while you watch TV. |
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I suggest getting a K&M 50 BMG Primer pocket uniformer to cut your primer pockets deeper. It doesn't cut the holes in wider, just deeper.
Here's how you get one. K&M Services (Ken Markle) 5430 Salmon Run Road Dover, PA 17315 Phone: (717) 292-3175 He doesn't have a website. Just give him a call. His case length trimmer is also first rate, indexes on the case head, and can be easily converted to power with a low speed drill or power screwdriver. The trimmer trims, chamfers, & deburs all in one step. Probably about the most popular case trimmer in use with FCSA folks I know. Also, how are you seating primers with a LEE 50 Press and a "Primer Arm"? The kit doesn't include a primer arm for 50 BMG. The primer arm is for small and large primers, not CCI#35s. It has a priming stem that sits in the hole in the shellholder on the ram. -David Edgewood, NM |
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Quoted:
I suggest getting a K&M 50 BMG Primer pocket uniformer to cut your primer pockets deeper. It doesn't cut the holes in wider, just deeper. Here's how you get one. K&M Services (Ken Markle) 5430 Salmon Run Road Dover, PA 17315 Phone: (717) 292-3175 He doesn't have a website. Just give him a call. His case length trimmer is also first rate, indexes on the case head, and can be easily converted to power with a low speed drill or power screwdriver. The trimmer trims, chamfers, & deburs all in one step. Probably about the most popular case trimmer in use with FCSA folks I know. Also, how are you seating primers with a LEE 50 Press and a "Primer Arm"? The kit doesn't include a primer arm for 50 BMG. The primer arm is for small and large primers, not CCI#35s. It has a priming stem that sits in the hole in the shellholder on the ram. -David Edgewood, NM Thanks for the info and it was the priming stem. |
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Haydons has them for $35.
http://www.shooters-supply.com/reloading_equipment.html |
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I must be blind. I didn't see one for a 50 BMG. |
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