45acp Primer Pocket Reaming & Uniforming

[GeoDudeFlorida]

I’m waiting for him to realize chamfering raises a burr on the obtuse angle edge. It used to drive me batty when I working with brass and bronze in the shops. The inspector would call me in off the floor and place one well-manicured fingernail on a hole and “ping” the burr.
Ther
But that was the only way to prevent the burr from raising. Some things I don’t miss.

 

[Blue68f100]

When using any reamer it must be perpendicular or you will cut on one side, and undercut the other. Doing it by hand means it's not likely to be cut true on such a short pocket. Then you end up with an egg shaped hole that's over sized.

 

[CQB45ACP]

When using any reamer it must be perpendicular or you will cut on one side, and undercut the other. Doing it by hand means it's not likely to be cut true on such a short pocket. Then you end up with an egg shaped hole that's over sized.

Certainly a possibility like doing anything by hand in this or any other endeavor.

 

[CQB45ACP]

I’m waiting for him to realize chamfering raises a burr on the obtuse angle edge. It used to drive me batty when I working with brass and bronze in the shops. The inspector would call me in off the floor and place one well-manicured fingernail on a hole and “ping” the burr.
Ther
But that was the only way to prevent the burr from raising. Some things I don’t miss.

Whew! Good thing my fingernails won’t fit in the primer pocket.

If I understand you right, sounds like in the primer seating scenario, conceivably, the primer could get “hung up” on a burr that runs around the circumference of the pocket?

Regardless, I’m going to have to let others deal with it. Hasn’t happened to me YET. I’ll start a different thread if it does

I was mindful though if one takes a tapered or other hand reamer and pushes too hard, even though it’s not designed to cut on the end, in brass it will.

In this scenario, you’d ream out an indentation in the bottom of the pocket smaller in diameter than the original pocket itself. Seems like something to avoid but not sure of actual consequences.

 

[Walkalong]

Well, a lawyer would have a field day with it.

 

[CQB45ACP]

Using my simulated fingernail, I scratched along the inside of a freshly reamed primer pocket looking for @GeoDudeFlorida s burr.

Can’t say for sure I found it but can say it was no where near as smooth as I thought it would be.

 

[CQB45ACP]

And finally…

We have beat this dead horse to the DNA while also determining how many angels can dance on the head of a pin.

To the delight of some and consternation of others, I just successfully primed ten Winchester cases with just carefully hand reamed then gauged primer pockets.

Very, very firm and smooth and seated below flush.

This is an expected result for me since I’ve been doing it all along just with Papa’s old worn out Morse #4. Now the torch is passed to my new tapered reamer (origins unknown, probably China).

@Walkalong, please close this thread. For the love of humanity, please!

Adios!

 

[koz4guns]

And finally…

We have beat this dead horse to the DNA while also determining how many angels can dance on the head of a pin.

To the delight of some and consternation of others, I just successfully primed ten Winchester cases with just carefully hand reamed then gauged primer pockets.

Very, very firm and smooth and seated below flush.

This is an expected result for me since I’ve been doing it all along just with Papa’s old worn out Morse #4. Now the torch is passed to my new tapered reamer (origins unknown, probably China).

@Walkalong, please close this thread. For the love of humanity, please!

Adios!

View attachment 1177212

132 posts and only 10 primed cases

 

[CQB45ACP]

132 posts and only 10 primed cases

 

[Walkalong]

132 posts and only 10 primed cases

Ten perfectly primed cases.