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Wrote border barrels / help for force calculations
I just wrote Border barrels... lets see what they have to say about the twists?
Btw, does anybody know how to calculate the force directed on the barrel mount. Im currently working on .300 Whisper and .308Win barrels for my Encore. Im using a stainless Lothar walther barrel blank. According to what I have studied about this 1.4021 type of stainless steel it can not be safely (without brittle a HAZ) welded with out later heat treatment. Heat reatment can not be performed with out loosing the rifles from the barrel and having deformation.
1.4021 stainless:
C % Si % Mn % Cr % P % S %
0,19 0,50 0,63 12,13 0,022 0,025
I have decided to go on with a M20-1 threated muff joint. I don't know how make sure ( calculate) that barrel doesn't get too thin around the camber, and that the remaining muff has enough cross sectional area to hold the barrel attached to the lug.
Take a look at the cad pictures. I thought about leaving full thickness barrel for 2cm abound the chamber. So that the preassure wouldn't blow the chamber on my face. But I would like to know how to approximate the strength and thickness needed for different calibers and loads.
- Jope
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