Any good pics of pressure signs?


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KegCommando
December 28, 2008, 12:43 PM
I was hoping some people had some good clear photos of pressure signs to look for.

My book has just a couple of b/w photos and it isn't real obvious.

Now that I am getting into more experimenting, I want to be more sure what I'm keeping my eyes peeled for.

Thanks!

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rcmodel
December 28, 2008, 01:06 PM
Smoke on your eyebrows is a bad sign. Back off.

Brass fragments in your cheeks is a bad sign. Back off.

Seriously, pressure signs are many and varied.

But if you start getting loose primer pockets with a rifle cartridge after loading them a couple of times. Back off.

Magnum revolvers will start to give hard extraction just before things get interesting.
Back off.

Standard pressure handgun calibers give no pressure signs at all until the case or gun lets go.

Your best method is to stay with pressure tested loads found in every reloading manual.

If you only have one book with poor pictures, you need to get more books.
The Speer #13 manual has an especially good chapter on pressure & pressure signs.

rcmodel

R.W.Dale
December 28, 2008, 01:19 PM
the pressure signs in books are pure voodoo that typically will only occur once pressure is exceeded by several thousand PSI if they occur at all as outlined below, the best thing you can do is stay withing published data from a NEW manual and verify your velocities with a chrony. The problem with traditionally used pressure indications is they go much farther to show the state of your individual chamber than they do the actual pressure of the round fired


http://i3.photobucket.com/albums/y96/krochus/FIRE/Casehead-2.jpg

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