Primer pocket uniforming tools (?)

[JWFilips]

Got my LRP Sinclair Primer pocket uniformer a while ago....and have been working on all my rifle brass when I have time.
I have a question for those of you that have been using these for years:
On average, how much does it remove....for let's say a set of 50 cases. On some of the first sets of cases I used it on it hardly removed anything...and on others is cut nice shiny pocket
I got worried that they may have sent me a LPP tool instead of a LRP tool....but I checked the #'s and I got the right tool.
I was using it today on some 30-06 old 1940's military brass and I got no cutting whatsoever....Is this normal?

 

[Ian]

Sometimes it cuts a lot, sometimes, half the bottom, sometimes nothing. I usually see some cleanup on military brass but usually not a full cut. The cases I see that seem to benefit the most from uniforming during initial prep is .30-30.

 

[RicinYakima]

I was using it today on some 30-06 old 1940's military brass and I got no cutting whatsoever....Is this normal?

I would say, yes, that is normal. More 30/06 ammo was fired in aircraft and machine guns than rifles. Primers had to be below the case head to prevent firing in the loading cycle. So most primer pockets are deeper than normal commercial cases. Lapua and Norma cases almost never are touched, but WW and R-P can have a lot taken out, and depends upon lot.

 

[JWFilips]

Well, Yes I did notice it worked great on my 30-30 W-W Super Speed cases!

 

[Jeff H]

I bought a pair of tools for "Large" and "Small" primer pockets a few years ago, but they did not differentiate between pistol/rifle. They were from a company that made one or two reloading gizmos and I don't remember their name, but they are nicely made aside from one little problem.

I assumed they would have adjustable stop collars, but nope. Either one cuts a primer pocket WAY too deep, with no means of adjustment, so they sit.

I would caution anyone to try ONE case and then measure before doing a bunch. The ones I got were obviously long, but I "uniformed" ONE case just to see. It left the primer something like .010" to .015" too deep for most firing pins to set off.

I'm thinking a shim (or shimS) could be used to correct this, but it hasn't seemed important enough to make that effort. I do have some 357 brass which makes any brand of primer stick out beyond flush, and when I get back around to that batch of brass, I'll probably make some little washer-like shims to slide over the cutter so the shoulder of the tool stops the cutting at the right depth.

 

[Rick]

I bought a pair of tools for "Large" and "Small" primer pockets a few years ago, but they did not differentiate between pistol/rifle. They were from a company that made one or two reloading gizmos and I don't remember their name, but they are nicely made aside from one little problem.

I assumed they would have adjustable stop collars, but nope. Either one cuts a primer pocket WAY too deep, with no means of adjustment, so they sit.

I would caution anyone to try ONE case and then measure before doing a bunch. The ones I got were obviously long, but I "uniformed" ONE case just to see. It left the primer something like .010" to .015" too deep for most firing pins to set off.

I'm thinking a shim (or shimS) could be used to correct this, but it hasn't seemed important enough to make that effort. I do have some 357 brass which makes any brand of primer stick out beyond flush, and when I get back around to that batch of brass, I'll probably make some little washer-like shims to slide over the cutter so the shoulder of the tool stops the cutting at the right depth.

No need to differentiate between Rifle/Pistol. The large one is large rifle. The other one is the same for Small pistol, small rifle, large pistol.

SAAMI Specs

Small Pistol​	Large Pistol​	Small Rifle​	Large Rifle​
.118"​	.118"​	.118"​	.128"​
To​	To​	To​	To​
.122"​	.122"​	.122"​	.132"​

This is the Sinclair tool. No adjustment, no stop collar. I have two of them and they both cut perfectly to SAAMI specs leaving a perfectly flat clean primer pocket.

 

[Rockydoc]

I have the Sinclair tools, but I wonder if it makes any difference for me. I don’t shoot competition and probably don’t shoot well enough anymore to tell any difference. I never notice any primers sitting proud or sunken in, so I guess I have decent brass.

 

[JWFilips]

Well I have shot a lot of good targets before I got this tool! Not sure it will improve my shooting but it is one more thing to satisfy the Handloaders mind!

 

[popper]

Actually I have and use the lyman bottom cutter and the Hornady crimp remover. The Lee crud remover never gets used. I've never bothered with pistol cases, 40sw or 9mm.

 

[Jeff H]

@Rick , that's the ones I need. Mine look identical, but the shoulder is cut back so far that they need a way to control depth. Not sure why they would have done that, because it would have been no more cost or effort to have made them the way yours are made.

Large rifle can up be .010" deeper than large pistol, which is what I meant when I said the did not differentiate. My "large" cutter is still too deep for even large rifle, so it's not like they mixed it up.

I might be better off using mine to CLEAN primer pockets with - using a LIGHT touch, of course.

 

[Rick]

If you think it makes a difference, it will; at least in your mind.

Going to the firing line in a Championship Match with 100% confidence in your equipment . . . . . .

Priceless . . . .

 

[fiver]

as to the amount cut.
yeah you get what you get.
i get a lot of shiny circles, one side cut, or just a skim here and there.
the ones i almost always get a good cut in the whole pocket are Federal large rifle pockets.
the ones i see circles in have the flash holes punched down into a little divot [yeah looking at you winchester] i'm pretty happy to have a nice flat place for the anvil to sit on.

the ones i mostly see one side cut on the most are remington cases, i always try to go for a 90 turn on them, and generally still only see the one side getting flattened out.
that makes me feel better about taking out the lopsidedness.

 

[Ian]

i'm pretty happy to have a nice flat place for the anvil to sit on

If you have that, you're good to go the way I see it. You can sure tell the difference in uniformed versus non-uniformed pockets on Remchester/Federal when seating primers.

 

[fiver]

it's really noticeable when there is a little ridge around one side of the primer.
[yep seen that recently on some new rushed off the line once fired brass, when the pockets hadn't been uniformed]

 

[seagiant1]

Hi,
Also, don't forget, to deburr, the Flash Hole!

GEN II UNIVERSAL FLASHHOLE DEBURRING TOOL | Brownells

The Lastest version of our Model 1000 flash hole deburring tool features stainless steel construction and chip clearance slots which alleviate the tendency of the tool to collect chips in the end of the cutting shaft. This tool is inserted in the ...

www.brownells.com

 

[CWLONGSHOT]

No need to differentiate between Rifle/Pistol. The large one is large rifle. The other one is the same for Small pistol, small rifle, large pistol.

SAAMI Specs

Small Pistol​	Large Pistol​	Small Rifle​	Large Rifle​
.118"​	.118"​	.118"​	.128"​
To​	To​	To​	To​
.122"​	.122"​	.122"​	.132"​

View attachment 25771

This is the Sinclair tool. No adjustment, no stop collar. I have two of them and they both cut perfectly to SAAMI specs leaving a perfectly flat clean primer pocket.

BUT use that LR in a LP and ya will ruin the brass...

LP is a shallower cup.

All "small" are same depth. LR is deeper.

 

[Rick]

BUT use that LR in a LP and ya will ruin the brass...

LP is a shallower cup.

All "small" are same depth. LR is deeper.

Not according to SAAMI. But then what do they know?

Large pistol depth is the same .118" to .122".

 

[CWLONGSHOT]

I have not seen that and have different tools from Sinclair for each.
The chart posted above even showed difference.
I have the ruined cases to show!!

That may be difference some
My confuse a CLEANING TOOL with a CUTTING tool. Dunno but Im careful not to mix them!

CW

 

[Ian]

Both small primer pockets use the same tool.

Large pistol takes its own tool

Large rifle takes its own tool because it is deeper than large pistol.

Three different tools are required to uniform the four common boxer types.

Large pistol and both Smalls being the same depth is irrelevant. LR being same diameter as LP is also irrelevant as far as tooling is concerned, though if your firing pin will reach, LP primers work dandy in low-pressure loads for LR cases.

 

[Charles Graff]

I have used the Sinclair tool for years. Works for me!