K&M makes great primer pocket uniformers (They are not for reaming). I can highly recommend them if you insist on chasing windmills.
45acp Primer Pocket Reaming & Uniforming
- Thread starter CQB45ACP
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CQB45ACP
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I do like the chase. Can’t explain it so I won’t try.K&M makes great primer pocket uniformers (They are not for reaming). I can highly recommend them if you insist on chasing windmills.
Blue68f100
Member
You can get reamers in 0.0005" sizes. Reamers in general will not cut on the bottom so it will not increase your depth. McMasterCarr and MSC sell them. A uniformer should do the trick, dia and depth. Years ago when the SP 45acp brass started showing up I setup my mill to ream the pocket to LP size. Made a special holder for the brass so every thing would be uniform.
I prefer to swage vs ream.
I prefer to swage vs ream.
GeoDudeFlorida
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Keep in mind ALL of the tools made for case preparation are designed to remove the least amount of material possible to bring the case to specifications. There’s no such thing as a “comfort fit” primer cup tool. They are designed not to remove any material if the primer cup is already in the minimum SAAMI specs.
CQB45ACP
Member
I understand
I just want the gauge to fit so am after the tool to make that happen.
It’s apparently or obviously not a reamer designed for crimp removal so am looking elsewhere like Papa’s reamer.
CQB45ACP
Member
My Frankford Arsenal swager didn’t do it because I suppose it’s sized to remove crimp which I don’t have. Which is fine with me cause I’d rather ream it anyway.
I have never had any problem with too tight primer pockets since I started reloading 45 ACP in about 1995. As long as the primer goes in snug and below flush, all way to the bottom of the pocket, it's all good. Only needed to remove some primer crimps but I have successfully used a counter sink (lifelong machinist/mechanic and had a half dozen in my tool box) Thousands of handloads for 3 guns and 45 ACP is one of my JIC handloads (Just In Case) and I keep about 1,000 rounds, just in case. I have used a few priming tools and really liked my Lee Bench Prime and my ram prime (I even put a ram prime on a Lee turret for use in my Lee turret press).
I am not criticizing anyone for what they do to/with their handloads, and it really ain't none of my business. Just showing another side of the discussion...
I am not criticizing anyone for what they do to/with their handloads, and it really ain't none of my business. Just showing another side of the discussion...
CQB45ACP
Member
243winxb
Member
The RCBS Ram Prime, will seat all primers, even when the pocket is not deep enough. Its just slow.
Had some 38 special brass with shallow pockets. I smashed the primers into the hole. They all fired. Then years later, bought the uniformer.
Had some 38 special brass with shallow pockets. I smashed the primers into the hole. They all fired. Then years later, bought the uniformer.
ballman6711
Member
You might want to try a chamfer tool like @mdi suggested. Any time I get one with too tight a pocket, I use my chamfer tool to put a tiny bevel on the pocket. It makes the primers go in a lot easier and smoother, without opening the pocket itself which IMO would lead to the pocket getting to loose too quickly. Primer pockets getting loose probably won't be an issue with 45acp, but could be with 9mm. I load for a couple of rifles so it's a concern there for me.
chris
chris
CQB45ACP
Member
That’s essentially what the tapered reamer does but less drastically
Jim Watson
Member
I ran a Large Rifle uniformer into some .45 ACP cases and seated large rifle primers below flush. All fired in a 1911. I then loaded them with large pistol primers, way below flush. The long 1911 firing pin reached and fired them.
Just curiosity, it wouldn’t pay off unless you had only rifle primers.
Just curiosity, it wouldn’t pay off unless you had only rifle primers.
CQB45ACP
Member
Thanks for the responses. Even the reflexively negative ones
Since as I’ve said, all I’m after is a reamer the size of the primer pocket gauge, I couldn’t possibly be proposing to enlarge the pocket to the point of looseness. We must all agree on that point, right? (Trick question—I’ve done it and it doesn’t.)
Now if folks are saying it will hasten the eventual looseness—maybe yes, maybe no. Anyone ever tested it? Does it happen before or after the primer pocket gets too shallow to load safely as mentioned in the 45acp case longevity article? I have had loose primer pockets and that’s why I bought gauge in first place.
As some suggested, I could use a countersink (have at least a dozen) but I’m not seeking only a chamfer per se and if not careful could go way to far. But still same theory.
So I’m back to my original point and will have to figure out which brand reamer to buy and at what cost. Until then I’ll use Papa’s old reamer.
Since as I’ve said, all I’m after is a reamer the size of the primer pocket gauge, I couldn’t possibly be proposing to enlarge the pocket to the point of looseness. We must all agree on that point, right? (Trick question—I’ve done it and it doesn’t.)
Now if folks are saying it will hasten the eventual looseness—maybe yes, maybe no. Anyone ever tested it? Does it happen before or after the primer pocket gets too shallow to load safely as mentioned in the 45acp case longevity article? I have had loose primer pockets and that’s why I bought gauge in first place.
As some suggested, I could use a countersink (have at least a dozen) but I’m not seeking only a chamfer per se and if not careful could go way to far. But still same theory.
So I’m back to my original point and will have to figure out which brand reamer to buy and at what cost. Until then I’ll use Papa’s old reamer.
CQB45ACP
Member
No, .409
Yes I rotate rotate rotate when there’s a problem and I’m using on many many really clean cases. Not just one off measuring
ballman6711
Member
For what you're wanting, I would use something like this:
www.midwayusa.com
The pocket uniformers can be unscrewed from the handle and put into an electric case prep station. I certainly wouldn't use it by hand on more than a few cases.
chris
Hornady Primer Pocket Reamer Package
The Hornady Primer Pocket Reamer Package is perfect for quickly removing the military crimp from primer pockets. Notes: This package comes with both...
www.midwayusa.com
The pocket uniformers can be unscrewed from the handle and put into an electric case prep station. I certainly wouldn't use it by hand on more than a few cases.
chris
lordpaxman
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Lips, don’t unpurse…
Just out of curiosity, where’d you get this offending brass? What primers and press? I just got a bunch of what looks like once fired Win brass and while I didn’t check it with the primer pocket gauge, the 1100 runs them through just fine with CCI 300s.
With the amount of brass being formed, certainly there could have been a run with tooling that’s tired.
CQB45ACP
Member
Thanks but that’s what I already have insofar as a purpose built pocket reamer—mine’s an Lyman and shown in picture with a Sinclair handle.For what you're wanting, I would use something like this:
Hornady Primer Pocket Reamer Package
The Hornady Primer Pocket Reamer Package is perfect for quickly removing the military crimp from primer pockets. Notes: This package comes with both...
The pocket uniformers can be unscrewed from the handle and put into an electric case prep station. I certainly wouldn't use it by hand on more than a few cases.
chris
Its dimensions are intended to only contact/remove crimps and is too loose for what I’m after.
JHTexas
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- Dec 2, 2018
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What I’m focusing on is just the gauge itself. I’m wondering if the end of the gauge might have a ding or burr on it that could keep it from entering the primer pockets. Like in the pic below, but rotating the gauge 360° to see if the measurement changes.
Attachments
CQB45ACP
Member
Well good question—it’s an accumulation over time of Winchester cases. Range pickup, bought as once fired, some I fired as new from white box, you name it. This particular batch of a couple hundred are culled out based on length (all at least .893”) and the only ones I’ve been using for several months.
CQB45ACP
Member
CQB45ACP
Member
Don’t know what a .209” is for but sure would rattle around in this
CQB45ACP
Member
Oh crap! Let me try.
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