6 BR Lapua brass hard to seat primers ?

[carl1575]

Just taking my first fling with 6 BR , new Lapua brass from Midway. Old CCI 450 primers, I am 77 and the price on the box is 77 cents, I have used hundreds of them in my 223s. I got the first 4 or 5 to seat ok, this is with a Lee hand tool (thought I was going to break the leaver off it though) Switch to my rock chucker and new Federal 205s and they took what I think is to much force. I have used a lot of Lapua brass in other rifles and yes they seated very firmly, but not lifting the bench firmly. Anyone else run in to this problem? Carl in Yakima

 

[carl1575]

Solved my own problem, went to Cables this morning and low & behold on the shelf were a carton of CCI small rifle primers BR-4. Been looking for them for months, didn't like the price $60.00, but my lee primer tool and new Lapua brass like them-happy camper. Carl in Yakima

 

[Dusty Stevens]

Maybe humidity finally swelled the old ones out? I bet theyll work fine in older brass

 

[bobcat93]

I had the same problem with new lapua 221 fireball cases..primer pockets were extremely tight. I am thinking the primer pocket will losen up after a few loadings..I never tried to run a primer pocket uniform tool through them..kind of odd..I also use CCI BR-4 primers.the remington 7 1/2 BR primers were just as tight.

 

[Longtrain]

I found that Lapua 6BR, which became 6 Dasher, had tight pockets with Wolf primers, which I believe are a bit larger then the run of the mill SR primers. When loading 223 brass, as pockets loosened, a switch to Wolf made for a tighter fit.

 

[jlow]

Did you happen to clean your brass with SS-media? That can give you that tight primer pocket feel.