The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

I always uniform new brass with a Sinclair International primer pocket uniformer which one of these things, it cuts the primer pocket to depth and squares off the internal corners. Usually with Lapua brass barely anything needs talking out but the last batch of Norma brass I have needs a lot taking out to get the primer to sit flush and I have resorted to a cordless drill to drive the uniformer. Does anyone else have this problem with any brass or use an alternative for uniforming? Also what do you use to clean the pocket when it has been shot, I use the uniformer again as the brass does seem to move slightly.

sam as you but with the k&m version

Do you use it by hand or with a power tool and do you find some makes of case need a lot more material removing than others?

I have primer pocket reamers that fit in my lyman case trimmer just put the case in and turn the handle a couple times.

Don't reamer your primer pockets until after the first firing - slack primer pockets are one reason for ditching brass and when the brass is new and the pockets are at their tightest, there is always a danger of removing a bit of the sidewall with your reamer.

Cheers
Vince

s vince says if you are fireforming get that done before you resize primer pockets

I had to cut the pockets before firing as the primers stick out by a couple of mm otherwise on the new Norma brass, I am wary of chambering a round with the primer sticking out hence I asked.

I swage with the RCBS tool and then lightly remove the pocket edge with a de-burr tool.

I have one of those Adam never used it still in the box I will have to try it.

I always lightly deburr neck after case length trimming...inside and out

Rob