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strobes
Reply with quote  #1 
I have done some annealing on my .308 brass and see that my groups are opening now.
I didn’t use the temp-sensitive lacquer and I guess no experience produced inconsistent results.
So two questions:
Is any one in Plano,TX area has annealing equipment so I can fix the brass that I have for a fee or a favor? And what local store would have temp-sensitive lacquer if any one knows?
spclark
Reply with quote  #2 
"Fixing" annealed brass isn't worth the trouble. Brass hardens from being worked, not any kind of treatment as with steel or other alloys.

It's easy to "burn" brass if it gets too hot so the temp indicating lacquer is worth it; try any welding supply store in your area, or you can get them on-line from places like this:

http://www.airgas.com/browse/product_list.aspx?catID=381&WT.svl=381

Brass needs about 650°F to anneal & doesn't benefit from quenching, just let it air-cool. If it begins to glow it's too hot!

On a clean case, you'll see a color change at about the right temp in a propane flame. That's enough; takes about four to six seconds (on a case being rotated at moderate RPM by an electric drill) with the flame set for about 1/2" - 3/4" inner "blue" cone. Run the tip of that cone just off the shoulder of the case, with the case pointing away from the flame so the heat is going up to the shoulder & neck.
strobes
Reply with quote  #3 
--"Fixing" annealed brass isn't worth the trouble. Brass hardens from being worked, not any kind of treatment as with steel or other alloys. ---
I was trying to say that with no experience my brass has different levels of annealing. I'm sure I did not apply enough heat. Running brass thought correct equipment will produce uniform results.
And thank you, I know where to look for temp indicating lacquer now.
steve_podleski
Reply with quote  #4 
Quote:
Originally Posted by strobes
I have done some annealing on my .308 brass and see that my groups are opening now....

I also have very little experience annealing but my hand-annealed Win 308W brass will shoot 5-shot groups in the teens or low 2's.
strobes
Reply with quote  #5 
Steve, did you use Tempil staff? Are you in Dallas area?
steve_podleski
Reply with quote  #6 
Quote:
Originally Posted by strobes
Steve, did you use Tempil staff? Are you in Dallas area?
No, I dont Tempil. I twist the case's neck/shoulder near the top of the inner blue flame for about a second or two until it faintly glows in low light. I live in the Seattle area.
strobes
Reply with quote  #7 
Ok, I'll try this, thanks
strobes
Reply with quote  #8 
Is this brass look OK for use with loads near max pressure?
This is my second try and I wanted to hear from people with experience.
Two pictures of the same batch with and without flash.


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