Flash Holes and Primer Pockets

[Rick]

Brad is going to build a machine much like mine pictured above. He just doesn't know it yet.

 

[Maven]

Well, I uniform (Whitetail Engineering) & deburr ( K & M) all my rifle brass and clean the primer pockets after each firing, but I don't think it has a measurable effect on either accuracy or velocity. However, I forgot to bring my primer pocket cleaner with me here in FL and haven't cleaned the primer pockets since the beginning of February: can't say that I've seen a tinker's dam worth of difference though.

 

[smokeywolf]

On the other end of the machine are two output shafts that hold chamfer/debur tools at 800 RPM.

800 RPM is really singin' along. Have you had any trouble with, unintentionally taking too much material at that speed?

 

[Rick]

No problems at all. The unit has two motors, the gear motor I mentioned and the main motor which is 1800 RPM and is gear reduced and chain driven to run the Forster on top and the chamfer tools on the right side. It's been 30 years since I built it and I could be mistaken about the 800 RPM, possible it's a bit slower than that. I figured the output shaft when building it by counting teeth on the gears.

 

[quicksylver]

Thanks guys for making this a great threat.

It never ceases to amaze me the rigs you guys come up with to make the regular chores of reloading easier and faster.

My hats, off to you !

The reason I bought this subject up was because I realized that the decaping pins were so much smaller than the flash holes and that the holes
were getting smaller after repeated firings.

Also I was having a little difficulty getting the primers to seat as deeply as I would like.

At some point it also occurred to me that while not that serious with regular loadings the size of the flash hole and its' shape could seriously affect
"mouse fart" loads.

 

[Brad]

If I was going to buy a primer pocket uniformer I wouldn't buy anything not carbide. Sinclair makes some awesome tools. I spin mine in a cordless drill.

Rick, I could see making a tool like that. I would need to put my mind to it. The ability to trim quickly would be the real selling point.

 

[462]

Figuring that my marksmanship needs all the help it can get, I pay a lot of attention to case prep.

I use a Sinclair primer pocket uniformer chucked in a cordless drill. Hornady military crimp remover and primer pocket cleaner tools are drill driven, too. After trimming cases to length, case mouths are deburred and chamfered with an RCBS tool. Flash holes are trued up by hand with Lyman's tool.

 

[waco]

You fellas have way too many cool gizmos. GREEN WITH ENVY....

 

[462]

Waco,

They are all inexpensive, small hand tools.

 

[Rick]

Waco, They are all inexpensive, small hand tools.

Yep, we're saving a bunch of money.

 

[Brad]

59.99 form Sinclair. An adapter for cordless screwdrivers and a large and small rifle primer pocket uniformer.


16.99 for a tool that allows use of an standard deburr/chamfer tool under power.

Not much money for a few tools that will last forever.

 

[462]

I paid less than that $59.99 figure for all the tools I mentioned, but the RCBS tool was $8 used.

 

[waco]

I was just being snarky.

 

[smokeywolf]

Yep, we're saving a bunch of money.

waco, your comment was good, but Rick's on a roll today. His comment had me choking on my gin & tonic.

 

[Rick]

Thanks guys for making this a great threat.

My apologies Dan, didn't mean for any of this to sound threatening.

.

 

[quicksylver]

My apologies Dan, didn't mean for any of this to sound threatening.

.

Threatening ?

I've got a grin from ear to ear !

 

[462]

Sometimes it takes me a while to catch on, but I get it now. At least the wheel weights were free.

My day is in its infancy but the Internet has taught me a new word: snarky. Now, there's a word that Mr. Keith never put on paper.

No fog, today, but onward nonetheless . . .

 

[Rick]

Threatening ?

I've got a grin from ear to ear !

Yeah, see the typo in your post #25. No doubt you meant thread but I couldn't let that one go.

.

 

[quicksylver]

Well now ......my grim is even bigger.

 

[Barn]

I find that it is easier to hold the shell case by putting it in either a Wilson or C - H case trimmer case holder. Push the case in and then tap it out after you are done.