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How to anneal cartridge cases!

http://www.lasc.us/CartridgeCaseAnnealing.htm

Don Fischer's picture
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How to anneal cartridge cases!

Interesting article. I doubt the necessity of annealing tho. I rather suspect that by the time it is required to actually save necks, the primer pocket's are getting loose. That machine is $350 and by the time you break even on the machine you'll have to anneal something in the neighborhood of 7000 cases. Then there's power and what ever your time is worth.

He said something about case streach upon firing, I find that most case streach come's from pulling a dry neck over a dry expander plug. STP worked great here but you really had to be sure and get it all out. One Shot in the necks and a shot in the dies work's but not as well. I don't believe it's the expanding of the case that streaches the case near as much as the drawing of the neck over the expander plug.

I met a guy that had one of those high rise handgun scope's Light makes. Awkward looking thing's. I don't know the theory behind them. Gonna go read some more of that site.

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Annealing

One VERY IMPORTANT thing that is most conducive to accuracy is CONSISTENT NECK TENSION! If cases are annealed.....this promotes this requirement very well! For the average hunter/shooter that doesn't shoot but a few shots a year to check his zero for hunting......no....it's not necessary! But for those that are attempting to maintain tight groups at longrange......it's the thing to do! And that expensive machine at $350.00 isn't required! I've been annealing cases since 1950 using my index finger and thumb plus my eyeball and a propane torch and the method works great! Brass is variable from different manufacturers; some harder than others! Starline brass is hard and for use in my BPCR it's necessary to anneal! I anneal it after EVERY FIRING as a matter of fact and neck tension is very consistent. If one is using cases that have a tendency to not be consistent in wall thickness the multiple annealing process will after about 4 annealings even the wall thickness out. In some cases/loadings annealing also prevents 'blowby' which is evidenced by soot being visible upon the exterior of the case.

Don Fischer's picture
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How to anneal cartridge cases!

Rick,

Are you simply hilding the case between your finger and thumb? I've tried the water in the pan deal long ago, if nothing else, it doesn't burn the finger's.

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How to anneal cartridge cases!
Don Fischer wrote:
Rick,

Are you simply hilding the case between your finger and thumb? I've tried the water in the pan deal long ago, if nothing else, it doesn't burn the finger's.

Don

Yep.....that's how I do it! The case can be rotated between the thumb and index finger such that an even heating is done! I do it under LOW LIGHT conditions; I have it dark in one room with just enough light coming in from another room to see what I"m doing and I heat the upper 1/3 of the case such that when I see a FAINT RED GLOW.....that's ENUFF!! Don't bring the case mouth to a bright red glow because that's TOO MUCH! Holding the case by the rim only.....my fingers never feel conducted heat! Don't put it in water; let it air cool! If you drop into water....sometimes the case will warp!

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How to anneal cartridge cases!

Chalk another one up for the propane torch here. I have one wild cat cartridge I must anneal which is necked from .325 to .300. Failing to anneal creates consistent neck splitting and inconsistent groups.

I didn't know they made these annealing machines, good info.

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How to anneal cartridge cases!
bitmasher wrote:
Chalk another one up for the propane torch here. I have one wild cat cartridge I must anneal which is necked from .325 to .300. Failing to anneal creates consistent neck splitting and inconsistent groups.

I didn't know they made these annealing machines, good info.

bitmasher

You probably wouldn't know unless you were a BPCR shooter as with some types of brass utilized with long and straight cases such as the .45/110.....it has to be annealed! Starline for one brand is very hard and must be annealed but I don't think the cost of the annealing machine can be justified! I can anneal 500 cases using my method in just a couple of hours! Being retired.....it gives me something to do! lol lol

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