Primer Pocket cleaning tips
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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
- bnz41
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Re: Primer Pocket cleaning tips
I bought one of these 2 years ago excellent bit of kit has everything on one machine I need to prep my brass.
http://www.cdsgltd.co.uk/lyman-case-pre ... -230v.html
http://www.cdsgltd.co.uk/lyman-case-pre ... -230v.html
Re: Primer Pocket cleaning tips
Some good tips guys, I use an Ultrasonic Cleaner on mine and primer pockets are perfect every time on my .44 cases but for something quick I suggest you use something like a Case Prep Station or a cordless drill with a primer pocket cleaner mounted in it.
Re: Primer Pocket cleaning tips
This will only work BECAUSE you dry tumble, otherwise the moisture from wet tumbling would be retained in the primers.Daryll wrote:I've loaded 10's of thousands of .38 over the last 30 years on my trusty Lee Pro 1000, and none of them have ever their primer pockets cleaned.
After firing the primed cases just get chucked in a tumbler with corncob or similar.
The still primed cases then go in the press, the first stage of the press sizes and deprimes the case, then the next stage primes them again...
I STM tumble before any prep (after de-capping) for many reasons, but mainly because clean brass is much nicer to work with and it keeps most of the crap off the dies.
Its up to you, your expectations etc, but I know a hell of a lot of people who have gone over to STM now.
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Re: Primer Pocket cleaning tips
Agreed... thats why I dry tumble the pistol calibres... however, for the rifle calibres I de-cap then U/S clean.Maggot wrote:This will only work BECAUSE you dry tumble, otherwise the moisture from wet tumbling would be retained in the primers.Daryll wrote:I've loaded 10's of thousands of .38 over the last 30 years on my trusty Lee Pro 1000, and none of them have ever their primer pockets cleaned.
After firing the primed cases just get chucked in a tumbler with corncob or similar.
The still primed cases then go in the press, the first stage of the press sizes and deprimes the case, then the next stage primes them again...
Snip..
Either way, I've never cleaned primer pockets..

Re: Primer Pocket cleaning tips
my question mainly came about because i had set up my new Dillon. Not reloaded for last few years. ran a few .44 cases through to set up the die and the ones that came out were filthy inside the pocket primers. I like many never cleaned them before as they were just reloaded...
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Re: Primer Pocket cleaning tips
The danger of being to enthusiastic could be that you end up with loose primers.
Re: Primer Pocket cleaning tips
You say clean, are we collectively mistaking cleaning for reaming D?Daryll wrote:
Agreed... thats why I dry tumble the pistol calibres... however, for the rifle calibres I de-cap then U/S clean.
Either way, I've never cleaned primer pockets..
In some cases it makes sense to properly ream the pockets to ensure the primers bottom correctly. This should not take much if anything off the sides, just trues up and levels the bottoms.
Or, removing annular or staked crimps on once fired mill spec ammo, but yes mine get cleaned by the STM otherwise.
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Re: Primer Pocket cleaning tips
I swage the primer pockets on GGG brass (about the only rifle brass I use) after U/S cleaning, but only on 1st use...
So with once fired brass, U/S clean, swage the primer pockets, resize and reload... after subsequent firing just clean, resize and reload.
Never had to ream/swage pistol cases.
So with once fired brass, U/S clean, swage the primer pockets, resize and reload... after subsequent firing just clean, resize and reload.
Never had to ream/swage pistol cases.
Re: Primer Pocket cleaning tips
yea, I swage as well, but in some cases the primer pockets are poorly formed and need bottoming properly and the flash holes correcting....that was in the days of F....not any moreDaryll wrote:I swage the primer pockets on GGG brass (about the only rifle brass I use) after U/S cleaning, but only on 1st use...
So with once fired brass, U/S clean, swage the primer pockets, resize and reload... after subsequent firing just clean, resize and reload.
Never had to ream/swage pistol cases.

Re: Primer Pocket cleaning tips
Ok so i mainly shoot pistol calibre, .357/.44 no rifle calibres yet.
Question is is it worth depriving before tumbling wet, or just tumble in media with primers in?
Question is is it worth depriving before tumbling wet, or just tumble in media with primers in?
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