IAyoteHNTR
New member
I've been prepping and loading a bunch of WIN .223 brass for my 6X45 and noticed rather quickly that every piece of once fired WIN brass I have needed the primer pocket uniformed as they were too shallow. That got me to wondering about the specs on dimensions concerning primers and primer pockets and after a few Google searches I had my questions answered but I thought I would share what I've been experiencing and doing.
After getting the information I was looking for I started measuring some of the primers I have. I measured 5 CCI 400 small rifle primers and found them to be from .120" to almost .121" and I then measured 5 WSR primers and they were from .119" to .120"
And since I was removing a decent amount of brass from the WIN .223 brass out of the primer pockets I measured several of the cases primer pockets for depth before and after running them through my RCBS prep station where I have a small primer pocket uniforming attachment fit on to it. The primer pockets were measuring from .115" to about .117" on average before I ran them on the uniforming bit. After they were measuring right at .120". Here's the material that I cut out of the primer pockets out of just 25 pieces of brass.
I found some dimension specs from Sinclair Intl's Precision Reloading & Shooting Handbook, 10th Edition.........
So I found this information and my personal experience the last few days to be a nice lesson and thought it might be worthwhile posting about it for others.
After getting the information I was looking for I started measuring some of the primers I have. I measured 5 CCI 400 small rifle primers and found them to be from .120" to almost .121" and I then measured 5 WSR primers and they were from .119" to .120"

And since I was removing a decent amount of brass from the WIN .223 brass out of the primer pockets I measured several of the cases primer pockets for depth before and after running them through my RCBS prep station where I have a small primer pocket uniforming attachment fit on to it. The primer pockets were measuring from .115" to about .117" on average before I ran them on the uniforming bit. After they were measuring right at .120". Here's the material that I cut out of the primer pockets out of just 25 pieces of brass.

I found some dimension specs from Sinclair Intl's Precision Reloading & Shooting Handbook, 10th Edition.........

So I found this information and my personal experience the last few days to be a nice lesson and thought it might be worthwhile posting about it for others.
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