So,I just seated some primers in some once fired 30-06 Norma brass. I tryed seating them with lee hard priming tool and on my rock chucker press. The primers are "bottomed" out in the pocket,but are still about 4-5 thousands proud of the case head. I've never run into this before. Thoughts?

Any chance there are Remington 9.5 primers?

I've run into WW brass with shallow pockets caused by an overly large radius in the transition between pocket sides and bottom. I've also run into a batch of 9.5's that were on the tall side of specification. Combine those and voila!

Large rifle pockets should be between .128" and .132" deep. When I cut pockets to .132" that batch of 9.5's still needed a strong seating stroke to get them flush.

First seated fed primers. Then measured the height of those vs. Some ww lr I had. The ww were lower in height so I seated those....still 4-5 thousands proud. BTW, the Norma brass has very little or no radius.

Measure the depth. You can use the tail of a caliper if you don't have an appropriate depth micrometer.

I'm headed out the door, so I don't know when I'll be able to check back.

Are you sure they are bottomed out? Sometimes the cups vary in diameter and it can take more force to seat them all the way. Also some of my presses exert less force than others and it can seem like you have to push a lot harder to get primers fully seated.

Fully seated as far as I can tell.

Primer pocket uniforming tool will clean up any problems. Also, were the primer pockets cleaned? The uniformer cleans them as well as makes the correct diameter and depth.

Cleaned in ss pins. Clean as can be. Are there any pocket tools that have adjustable stops.

I use the Sinclair solid carbide pocket uniformers. There is no need for adjust-ability. The pocket has a spec to be cut/formed to. If it is in spec and the primer won't go in there is a problem with the primer dimensions or the tool being used to insert them. Seems two different primers are high for you so that points to the brass or the seating tool.

I have not had this problem with either seating tool before with other brass. BTW,this Norma brass came from overseas, that could be the issue. I'll do some measuring of pocket depths tonight. What is the spec for depth?

I have a carbide uniformer in a drill at the loading area. I do all pockets, new and fired, to make sure they are fine. Always works.

"What is the spec for depth?"


For large rifle:
Minimum depth is .1250"
Maximum depth is .1320

My Sinclair tool uniforms to the max depth spec.

Measured with tail end of calipers:

.126-.127

Measured a couple primers:

@.129

Here are the height specs for large rifle primers:
min= .1230
max= .1330

I do my casings like Ringman does. You may want to get a uniforming tool.

Which (who's) tool you using?

Bought some hornady brass for my 7x64 with the same problem. Then bought the hornady tool and it is junk.

sinclair carbide in a forster base(front), powered by cordless screwdriver......

Damn,
I hate brass prep. Maybe it would be easier if I was setup to do it efficiently. Now it looks like I'll have to add another step.