.308 Lapua Brass ….Tight primer pockets!

Mario1961

Private
Minuteman
Aug 21, 2020
36
9
I had some real problems with an order of LAPUA brass in .308 . The brass was small primer pocket. It was a bitch seating the Primers. Out of a 100 only 20 sat where they were supposed to the rest seated high in the pockets. Got them to seat only after treating them like crimped military brass . And then that didn’t work on a few. I contacted LAPUA and they were not much help. They told me to use a Sinclair hand held primer . I used one and my Redding press but a considerable amount of force was necessary to seat them. Before this order I had an order of 6.5 Creedmoor small pocket with absolutely no issues seating the primers. I tried CCI and Winchester primers too see if that was the issue. Both were equally difficult to seat. I talked to a few people I know who ran into this issue. Anyone else run into this?
 

Jayhawkhuntclub

Sergeant of the Hide
Full Member
Minuteman
Jan 26, 2019
428
199
I'd use a swager and a primer pocket uniforming tool. Shouldn't have to, but...
 
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Ocean_Dweller

Private
Minuteman
Jun 30, 2020
88
45
Try a different priming system and see if that helps. I always find it hard to seat primers in Lapua brass the first few firings also but they always seat.
 

high right

Sergeant
Full Member
Minuteman
Feb 24, 2013
461
168
Colorado
New BR brass can have very tight pockets too. I use a Q tip and spray one shot on it. A quick swirl in the pocket, wait a minute, and it makes a world of difference. Usually much easier on the second firing.
 

Temper

Gunny Sergeant
Full Member
Minuteman
May 29, 2011
769
301
FL
My 308 Lapua Palma brass seats a little too easy for 1x fired Lapua brass. Kinda nervous they won't last long.