May 6, 2017, 09:32 PM | #1 |
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How to ruin brass
I'm relatively new to annealing. So far I have adhered strictly to what the Tempilaq, the books, and the brass was telling me. However, yesterday I got lazy and ruined 50 pieces of brass.
Instead of setting everything up and getting the timing down using Tempilaq, I just eyeballed the torch distance to be around where it was last time and assumed the machine was still set where I left it. And then, I over annealed the neck so much that my mandrel neck die smashed the shoulders....Which happens when the shoulders are too soft. I will keep annealing because it has improved accuracy and helps maintain a consistent bullet hold . But shortcuts will bite you in the butt .I guess some dense folks need to experience what the books warn against before they listen . |
May 6, 2017, 10:17 PM | #2 |
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Yea, the stove is hot thing but you really get convinced when you touch it.
Not to beat a dead horse, that's why I am going with the Annie. It simplifies that part completely. Part of the problem with a torch is unless as you note, you temple it each time there can be variable's that are there. I threw all my first efforts out some time ago. Over annealed and not a problem, just too soft. Ok for hunting, neck tension was never going to be what I needed for target. |
May 7, 2017, 09:00 PM | #3 |
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If you can still load them the neck and shoulder will get hard again in a number of reloads. If the shoulders collapse then you can get junk price for them.
Using a flame without some kind of measure of the heat is always a bad idea. I have also seen brass come out of an induction annealer glowing red hot and that is way to high a temperature too. You should always calibrate your process with Tempilaq or something similar. |
May 7, 2017, 09:13 PM | #4 | |
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May 7, 2017, 09:30 PM | #5 |
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Soft brass rarely splits - it can refuse to spring back, making extraction a little harder but it will work harden over time.
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May 8, 2017, 01:10 AM | #6 |
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How could anyone do that
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May 8, 2017, 01:34 AM | #7 |
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Darnest thing I have seen. I have been annealing for years. All done by hand (literally holding my brass with my fingers) with a propane torch, without any of those fancy wingy dings. Never have anything like this happened to my brass. I routinely get 15 to 20 firings out of each batch of brass.
BTW, it is a fired brass. Shouldn't the inner diameter of neck be larger than the neck die's mandrel? -TL |
May 8, 2017, 02:20 AM | #8 |
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When forming .577-450 brass from the most available "parent", one must anneal 28 ga shot shells before even attempting the first step. Then, generally, one to two more annealings are necessary during the forming process.
Heating until the cases glow just shy of red is not the correct method. (Don't ask me how I know. It should be apparent. And 28 ga brass shot shell cases aren't, exactly, cheap. ) ...But I did end up with a 60% success rate from the "idiot" batch.
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May 8, 2017, 09:58 AM | #9 |
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My understanding is that no it will not harden over time again.
It only does that if you don't get it too soft. Once you have over softened it , it never gets harder again as you have permanently altered the grain structure. How much actual affect that has is ?? Not a clue if it takes a 1/4 load to 5/8 or 3/4, but it does have an affect and I believe I am correct on no going back. |
May 8, 2017, 10:01 AM | #10 | |
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I crunched a couple of shoulders before I realized what I was doing. It turns out that while it is 30 caliber, the case does not fit in a 308/30-06 seating die. So it goes. |
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May 8, 2017, 10:06 AM | #11 |
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In response to RC 20 and ShootistPRS,
I didn't get to "dead soft" I know this because the necks still have some spring back, and I was able to seat a bullet without the neck splitting. That is what happens if you go to dead soft..No spring back at all, and when you seat a bullet, the case necks will split or crack. But I did get them too soft, no doubt about it. I will shoot them and see what happens. Because I know that I didn't do the catastrophic mistake and heat the casehead....I know this because I can pick them up right off the annealer with my fingers by the casehead and it isn't very hot. I did some experiments a while back to see what it took to get the casehead above 450 degrees using my annealing machine, and to get to that point the neck and below the shoulder has to be glowing read hot... . At least on .308 or longer bottle neck cartridges. Mainly because my annealer is done in about 4-5 seconds. |
May 8, 2017, 11:36 AM | #12 |
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"...happens when the shoulders are too soft..." Cases don't have to be annealed to wreck 'em if you smash 'em with something hard. And annealing has nothing whatever to do with accuracy.
"...glowing read hot..." Red hot is far too hot. Brass anneals at approximately 650-700 degrees Fahrenheit. 450F is too low. Mind you, if the case body gets anywhere near 700F it's toast. Literally and figuratively.
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May 8, 2017, 12:23 PM | #13 |
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"HOW TO RUIN BRASS"...
That's going to be a THICK book! |
May 8, 2017, 12:50 PM | #14 |
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I've only done it once in my life, with some case's for my 30-06 and cast bullet's. I'm sure I did a lousy job, it's a strange thing to me. I have never felt the need to anneal. I get five loads out of a case I'm good with that. I load rather hot most the time too so after five loads, my primer pocket's are getting loose. At some point the cost of case's get's down to almost zero, how much can you really save? And if you do anneal, the gas just add's to the cost of the case.
I recently got some 308 case's , once fire mil surplus they were selling, to make 243 case's from. I don't recall what they cost but just looked and don't know what kind of case's they were selling were $38 per 100. I get five reloads from them and it come's out $38 per 500, that is about .075 each! How inexpensive do you need? As for better accuracy, I suspect that is in your head! I've seen people do different things that could effect accuracy some but you'd have to be a benchrest shooter to be able to use it. I don't do many of those secret little tricks to make my rifles shoot better but then I've got a couple 1/2" inch rifles, several 3/4" rifles and a 1 1/4 inch rifle I simply haven't worked with enough. I think it would be really hard to deal with if you found out the process only gave you .003" better accuracy! Most of us couldn't hold as close as we'd need to, even off sand bags, to do that! It may have been on here, don't remember, a guy had a video of a auto annealing machine. Now if I could afford and find one of those, my feeling's might change. "Ah, yes I do have an auto annealing machine. Cost me $1500 but I get .003 inch's improved accuracy and I can shoot my $.075 case's longer, saving a lot of money"! |
May 8, 2017, 01:19 PM | #15 | |
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Don, I have seen first hand how much annealing helps my loads. Let me first say, that in your case, annealing may not help much. If the loads are opening up the primer pockets after 5 loads, then annealing to prolong brass life isn't practical. In my AR and AK loads, I do not anneal either because they beat the brass up so badly that after 5-6 loads, I have to junk them anyway...dents, dings, chewedup caseheads, destroyed necks etc. But in my F-Class rifle, which is a 1/4 MOA rifle, Annealing has reduced my extreme spreads on my velocities, and it prolongs case life of cases that I have uniformed the primer pockets, turned the necks, deburred the flashholes, and sorted by case volume...That is a lot of work, and there are several culled cases once I am done. That, plus sorting bullets now, is what I have done to help ensure it is always 1/4 MOA with no flyers. I shoot F-Open so I use a front rest and rear doctor bag. At 600 or 1000 yards I can tell the difference between volume sorted cases, and consistent neck-bullet hold. On these cartridges I anneal every single load. Then there is lake city brass I use in my AR-10, this is the only gasser I anneal for because Lake City brass is tough stuff. It will handle hot loads for several re-loads, but the neck gets stiff. The neck will crack on full power loads before the primer pockets open up....If I anneal them every 3rd load or so, they will last for quite a while. Everyone has their methods, and reasons they do what they do. In my opinion, there is not "accuracy enhancing" or "longevity increasing" activities that always a waste of time. It all depends on application. |
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May 9, 2017, 05:26 PM | #16 |
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Don,
Norma says one of their QC tests for their brass is that they pull samples and make sure they can get 10 reloads without splitting a neck. If the brass is good, and unless it has unusual growth each firing cycle, as can happen with belted magnum cases due to how their tolerances are handled, then you should be able to go past five. Indeed, having to anneal every five times or fewer to prevent cracking is one of the indications you are over-annealing. Over-annealing makes brass split sooner. The confusion is that "annealing" isn't really desired. Stress relief is what is desired. That's all you need to gain consistent bullet pull and to prevent neck splits. Stress relief completes just below the annealing temperatures that soften brass and cause grain growth. For that reason, stress relief is sometimes called "partial annealing", but it is all the further we really want to go. Fred Barker came up with two idiot-proof, but slow, methods of doing this in his July, 1996 article in Precision Shooting Magazine (RIP):
These are patience trying methods, but before you give up on annealing, try one of those just to see what happens to your velocity SD and group sizes at long range. In a few instances, this has made all the difference needed to become competitive. Metal god, Is that a case or a circumcision gone wrong?
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May 9, 2017, 07:23 PM | #17 | |
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Since then I've gotten much better at using that collet die . . . . . . . . . . . . .
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May 9, 2017, 07:30 PM | #18 |
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I have read in the past about guy's getting up to 20 reloads out of rifle brass, don't recall if they annealed. My bet is they were shooting cast bullet's to do it. With Norma's 10 reloads per case, did they anneal the case's? I think I could get quite a bit more reloads from a case if I didn't push it like I do. I suspect Norma used lighter loads than max to get 10 reloads. All my reloads are not at max but one's not there are close. One of the thing's I think of is I don't want to load a 30-06 down to 308. I'd rather have the 308. Actually I have both. Funny thing about my loose primer pocket's, a long range shooter from Penn wrote me while I was getting my 6.5x06 going. I was shooting pocket's loose much to soon and asked the guy for some info. He told me not to worry about loose pocket's, he glue's in his primer's! I haven't gone that far!
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May 9, 2017, 08:11 PM | #19 |
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If your using propane it's pretty easy, don't let the flame turn from blue to orange and you won't ruin anymore.
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May 16, 2017, 07:48 PM | #20 |
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I have always used a deep well 1/4 inch drive socket on a 2 inch extension chucked into a cordless drill. A 1/2 " socket is good for .308 Win and .260 Rem, I use a 7/16 for .204 and .223. I have a tub of water on the bench and a propane torch. Light the torch and dim the lights in the room. Drop a case into the socket and spin just the neck of the case in the flame until it just starts to glow. Tip it out of the socket into the water and it's done, you can do 50 cases in less than 1/2 and hour easily including setup.
However I am sometimes wonder if annealing is worth the hassle. I read a story yesterday on .30 BR case forming tips where Randy Robinett is quoted and he stated during development he fired 30 cases 6400 times. He said the cases were never annealed and he had no neck separations or splits occur. link - http://bulletin.accurateshooter.com/...-and-al-nyhus/ I have some Lapua .308 small primer brass that are in the teens now, annealed twice. Only neck separation I have ever had was on some .204 that was on it's 3rd reload and never annealed. Never did figure out why, did not even realize I had a issue till I ejected and saw the neck was missing. The neck came out easily with a cleaning patch and non of the other brass in that batch ever failed.
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May 17, 2017, 03:45 AM | #21 | |
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Note that the quoted "forum member" says absolutely nothing about sizing, and he's speaking solely of competition use. He also says nothing about what 'load level' those "6,400" rounds were fired at. I managed to fire a .444 Marlin Starline case nearly 60 times, with full-length sizing and full-power loads, before I gave up (due to case-sizing effort). The case never failed. That doesn't mean that standard reloading practices are invalid. It just means that the particular lot of (prototype) brass that I was testing - and a single case, at that - managed to get along well with that specific rifle's chamber and my sizing die.
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May 17, 2017, 08:53 AM | #22 | |
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I included that quote in my previous post because I found it interesting though that a top bench rest bullet manufacturer managed to get 200 firings from brass with no neck failures without annealing.
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May 17, 2017, 01:53 PM | #23 |
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You could get an incredible amount of case longevity without annealing by having dies cut with the same reamer that cut your chamber, and by using minimum power loads....Oh and only sizing the neck just enough to hold the bullet. Some guys I know size such that they have a slight crush fit in the chamber..... Basically the case cannot grow/stretch. Then by neck sizing 1/2 the neck, and only about .0005" or just enough to hold a bullet (barely), brass will last a long long time without annealing.
But, none of that would be recommended for a hunting load, or magazine fed load.....Or just about any other load. So, we anneal. |
May 25, 2017, 02:50 AM | #24 |
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I anneal, but I try real hard to NOT over cook the brass...
I get somewhere between 25-35 loadings out of 5.56 Milbrass before something else gives up. Either the primer pocket (or which a roll former will tighten up some with the right dies), The rim gets too beat up, case gets gouged on dented excessively... You get the idea. I quit keeping track of number of firings after the 1st & 2nd, no point in it. Virgin brass or once fired for the 'Mission Critical' rounds, 'Range' ammo reloaded to same specs as 'Match' ammo, so therotically the two could interchange, and has been interchanged before with little or no notice. I'm set up to anneal all bottle neck rifle cases I load, so I just anneal everything and have a consistant baseline to start from. That produces more consistant resized cases to work with. I anneal 'Plinking' cases also, simply because I'm set up to do so. Dents or scratches/gouges in the case that would cull them for match grade ammo, loaded with off weight bullets & 'Old' primers, Plenty good for the guys that never aim, or a stash of 'Shortage' ammo... The ground hog can't tell the bullet that just killed it was 2/10 grain off! ---- You are DEAD RIGHT about the chamber being cut to a REASONABLE size, Although you would have to find a tool & die maker that can heat treat the sizing die. The LESS the brass gets blown out, the less work hardening imparted to the brass resizing it. Every time I mention honing the ball or neck of a resizing die, people crap themselves... There really is nothing quite like having a die that produces brass that fits your chamber, bench rifle guys have been doing it for years, But the general reloading public freak completely out when you suggest NOT overworking the brass, and I have no idea why... Most 'Common' dies WAY over compress the neck, they are built to compress even the thinnest wall brass back small enough the sizing ball can clearance them, same with hardest or softest brass... You get WAY over compressed, then the sizing ball has to drag that brass back out to clearance a bullet... Honing that neck out a little (takes accurate measuring tools, and the ability to use them) often takes a bunch of work hardening out of the process in the first place. People FREAK COMPLETELY OUT when you suggest a re-chamber, but some chambers are completely crap and just flat need a 'Do-Over'. Blowing every case/neck way out oversized seriously hardens the brass when you crunch it back to a useable size... Chamber readers are only 'NEW' ONCE! The next 300 chambers get a used/dull reamer... Last edited by JeepHammer; May 25, 2017 at 03:07 AM. |
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