Annealing, Primers in...

[yukonal]

...or primers out? With a Bench Source Annealer. How do yous guys do it?

And what is the theory behind either way?

 

[rijndael]

Just to clarify: You mean spent primers in/out, right?

 

[yukonal]

Yes, that is what I mean. 4th of July is 3 months past.

 

[Rook 6]

I guess the right way to find out, as a concept theory, would be for someone with an AMP MKII to use the Aztec analyzer to analyze two like pieces of brass from the same lot. One with a spent primer and one with no primer to see if there was any appreciable difference in the output of the recommended setting.

 

[One Eye Pete]

Always with spent primers in. After shooting I wipe the case necks with a paper towel soaked with alcohol to remove the carbon on the necks. Then I flame anneal with my Annealeeze. The depriming is done in the next step when I size the case. Why add an extra step.

 

[whatsupdoc]

Makes zero difference, simply preference.

 

[DHD]

Preference. I deprime, clean my cases (I shoot just about everything suppressed), anneal, size, trim and chamfer if necessary, then back in the tumbler to get the lube off.

My cases get nasty out of the AR's because of the suppressors and now I do the bolt action cases the same way for consistency.

I love my Vertex but occasionally look sideways at the induction annealers and wonder what it's like on the dark side...

 

[Ccrider]

Amp says it does not matter.

 

[yukonal]

I just had a notion that maybe there would be a difference between electricity and flame. The heat from the flame could dissipate easier out the empty primer pocket???

But, I guess for sure, if the SPENT primers are still in, the radiation from the heat along the case should be evenly distributed by both methods.

To be honest, I've been punching primers first, with no sizing, then annealing. After getting some opinions from you guys, I'm going to start leaving the primers in, and saving a step. Thanks for the feedback!

 

[Straightshooter1]

I just had a notion that maybe there would be a difference between electricity and flame. The heat from the flame could dissipate easier out the empty primer pocket???

But, I guess for sure, if the SPENT primers are still in, the radiation from the heat along the case should be evenly distributed by both methods.

To be honest, I've been punching primers first, with no sizing, then annealing. After getting some opinions from you guys, I'm going to start leaving the primers in, and saving a step. Thanks for the feedback!

Since my sizing dies have the spindle with expander ball removed when I size my cases (afterwards use an expander mandrel to get my neck tension), I simply deprime my cases the very first thing. Though I could do it after I flame anneal or any other time, but it really makes no difference in the results I get on my annealing.

While your thought about empty primer primer pockets resulting in faster cool down is valid, the difference is so very small it's not going to have any effect one way or the other worth considering.

 

[Bill K]

I have annealed cases with the dead primers in and also with them removed, Never seemed to matter to me if it made any difference. I would not try it with a live primer in, however.

 

[jelenko]

Because annealing is done for the neck/shoulder, I gotta think that the difference in the 'heat sink' of the rest of the case due to the primer has to be a third order effect.

 

[DirtySteve]

I have annealed cases with the dead primers in and also with them removed, Never seemed to matter to me if it made any difference. I would not try it with a live primer in, however.

I have tried it twice, two separate occasions, and the results are what you would expect.

 

[Webster]

...or primers out? With a Bench Source Annealer. How do yous guys do it?

And what is the theory behind either way?

Why would you think it matters? Just don't do it with a live primer,

A couple of years ago a guy on this websitee wanted to know if he should anneal bullets. Next thing guys will want to know is if they should put the cases in the annealer with their left or right hand. How about annealing only during a full moon.

 

[dthomas]

Erik Cortina has an old video of annealing with a live primer in the case. He's not recommending it just showing what it takes to make it go off.

 

[over_thetop]

I deprime before l anneal/size to see if pockets opened. Depending on how much so, l toss them if loose. If they are acceptable l use a slow drill and socket with a low propane flame for 5 or six seconds and watch for a light blue hue… flame adjusted just like the expensive machines. But if you are high volume get the machine.

 

[XTR]

I’ve had my Benchsource for well over 10 yrs these days. I always reach into my 5 gallon bucket of trash brass to grab a couple or four of the appropriate cases to test the cycle time. On occasion some of those have been ones that the primer pocket was too loose as noted when I primed them so they went in the bucket with the primer in. Never had an issue.

about a yr ago I was setting up for a run. All the test cases were threw the flames and off the turntable in the cardboard box they drop into when **BLAM**. Hmmm…. Better change that practice to make sure they dont have live one in them.

personally, I usually run the brass in the annealer first before I size and decap, that way I get the benefits of the annealing (uniform shoulder bump and case neck sizing)

 

[sharp.shooter.ser]

we always advise to have the cases deprimed before annealing - too often it happens to go boom if not following that practice.

 

[Webster]

Since my sizing dies have the spindle with expander ball removed when I size my cases (afterwards use an expander mandrel to get my neck tension), I simply deprime my cases the very first thing. Though I could do it after I flame anneal or any other time, but it really makes no difference in the results I get on my annealing.

While your thought about empty primer primer pockets resulting in faster cool down is valid, the difference is so very small it's not going to have any effect one way or the other worth considering.

Necks glowing red cool below the annealing temp in seconds. What do you think happens on the case. Most of the case body and case head never reach anything near annealing temperatures.

 

[Straightshooter1]

Necks glowing red cool below the annealing temp in seconds. What do you think happens on the case. Most of the case body and case head never reach anything near annealing temperatures.

You're right on both accounts. I'm not sure how you read anything like that into what said??? ¯\_(ツ)_/
My point was about heat dissipation, that the heat that does get to the body and case heat will dissipate at a different rate when you add the mass of the primer to the case head.

Simple physics.