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First attempt at annealing - pics included

 
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  #1  
Old 09-20-2013, 09:30 PM
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Location: Holland, MI
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First attempt at annealing - pics included

After having some problems with neck tension consistency using the FC brass that came with my rifle I thought I'd better finally try my hand at annealing. I would love a Bench Source unit but don't shoot enough to justify the $500 outlay right now. I tossed out the idea Sunday afternoon at the gun club that some of us should group together and buy a unit, but no one else bit, so...

I bought some 450 degree Tempilaq because that is what was readily available through the local welding supply company. Nobody had 650 or even knew if they could order it. All of the brass has been prepped by depriming, cleaning, etc and was rejected a week ago because I couldn't get consistent necks; most bounced right back when trying to size them with a collet neck die. So, they were all prime candidates. All received a small line of Tempilaq about 1/8" below the shoulder, with 5 of the 10 then receiving a line running all the way down the case. I am using MAPP gas, and quenching in water as soon as I see a bit of red in my darkened garage. Only 1 small wattage bulb is on. My cordless drill and a 12mm deep socket held the brass and spun it. I first tested 20 cull brass of the same brand to get the technique down.

Below are the photos of the brass. The single 450 degree line burned up about 1 second before the first hint of redness appeared, and did so consistently. Each piece was in the flame for about 6 seconds. You can also see that the ones with the long stripe burned about the same degree consistently too. Of note, the first 3 photos have the Tempilaq stripes facing up, on the 4th photo they are on the bottom away from the camera.

So how do they look? Color good or not good? Any additional recommendations before I do more?
I'm tempted to next run these through my Lee collet die and see how the neck sizing works to see if I gained anything with this experiment. However I thought I'd post them here first for your thoughts.
Attached Thumbnails - Click to View Larger
First attempt at annealing - pics included-stripes-all-10.jpg   First attempt at annealing - pics included-5-short-stripes.jpg  

First attempt at annealing - pics included-5-long-stripes.jpg   First attempt at annealing - pics included-10-no-stripes-sml.jpg  

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  #2  
Old 09-20-2013, 10:34 PM
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Re: First attempt at annealing - pics included

I have my propane torch clamped down, turn brass with cordless screwdriver and have a metronome by my ear. I count 4 sec. with 6BR and 6 sec. with 7mag size cases . My brass never has looked like lapua does. But I always have the rainbow lines like you do.
Personally I think its all in consistency . Do em all exactly the same without over doing the temperature.
The only ones I quench is the tiny cases.
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First attempt at annealing - pics included-2012-09-10-18.45.32.jpg  
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  #3  
Old 09-20-2013, 11:04 PM
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Re: First attempt at annealing - pics included

Also Lee case holder fits my screwdriver so it can be rotated smoothly. I sonic clean after to remove the sticky tarnish from inside the necks. If you have over annealed and leave the sticky tarnish inside necks you'll crush the shoulder with the sizing mandrel. Dont ask me how I know!
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Old 09-21-2013, 05:25 PM
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Re: First attempt at annealing - pics included

tbrice, those cases look perfect.
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Old 09-21-2013, 05:50 PM
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Join Date: Dec 2012
Posts: 318
Re: First attempt at annealing - pics included

Today was winchester .308 day they got 5 seconds. Yeh they never quite look like an annealing machines color I just stop when the neck turns dull red.
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First attempt at annealing - pics included-20130921_160348.jpg  
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  #6  
Old 09-21-2013, 08:31 PM
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Location: S.E. Michigan
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Re: First attempt at annealing - pics included

Quote:
Originally Posted by Dr. Vette View Post
After having some problems with neck tension consistency using the FC brass that came with my rifle I thought I'd better finally try my hand at annealing. I would love a Bench Source unit but don't shoot enough to justify the $500 outlay right now. I tossed out the idea Sunday afternoon at the gun club that some of us should group together and buy a unit, but no one else bit, so...

I bought some 450 degree Tempilaq because that is what was readily available through the local welding supply company. Nobody had 650 or even knew if they could order it. All of the brass has been prepped by depriming, cleaning, etc and was rejected a week ago because I couldn't get consistent necks; most bounced right back when trying to size them with a collet neck die. So, they were all prime candidates. All received a small line of Tempilaq about 1/8" below the shoulder, with 5 of the 10 then receiving a line running all the way down the case. I am using MAPP gas, and quenching in water as soon as I see a bit of red in my darkened garage. Only 1 small wattage bulb is on. My cordless drill and a 12mm deep socket held the brass and spun it. I first tested 20 cull brass of the same brand to get the technique down.

Below are the photos of the brass. The single 450 degree line burned up about 1 second before the first hint of redness appeared, and did so consistently. Each piece was in the flame for about 6 seconds. You can also see that the ones with the long stripe burned about the same degree consistently too. Of note, the first 3 photos have the Tempilaq stripes facing up, on the 4th photo they are on the bottom away from the camera.

So how do they look? Color good or not good? Any additional recommendations before I do more?
I'm tempted to next run these through my Lee collet die and see how the neck sizing works to see if I gained anything with this experiment. However I thought I'd post them here first for your thoughts.
I always thought you guys over on the west side of the state were loaded.....

Problem with a group buy on one machine is who keepsa the machine...lol

I see you have now experienced the joys of messy templaq.

There is an alternative. Your LWS should have temperature sensitive crayons. Not quite as messy as templaq.

Your cases don't look bad (for a hand job) but springback will tell the story. I'd use the vicegrip method. It works pretty well.
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  #7  
Old 09-22-2013, 07:50 AM
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Re: First attempt at annealing - pics included

Dr. Vette your cases look good for what I call a partial anneal/stress relief on the shoulder to add a little flex back and regain neck tension but a full anneal is going to require a little more heat, 575-600* for 5-6 seconds on 06 to 300wm sized cases.
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