Recent content by NoName0815

I think what you´re looking for is this: http://le.atk.com/pdf/357_SIG_Setback_Length-vs-Pressure.pdf Also Broemels´Quick Load can give you a very realistic idea, what happens, when bullet is set back too much. And last but not least: Even in very old Speer Relaoding Manuals it was well...

Hi Black Bear, as I mentioned, I already bought the 4-12 x 56 with 30mm Tubus and Red Dot in the middle of a Duplex reticle. The price @waffenkolb is also for a used one... So my 200,- € Purchase isn´t really a bad one... compared to the common german prices, even for "cheap" Tasco...

Hi all, I live in Germany, and I´m about to get my Hunting-Licence in Feb. 2008. Since I don´t have much money, I wanted to start with a chep Howa Rifle and mount the mentioned Tasco-Scope, which I already bought for 200,- €. The Seller told me he bought it in the Year 2001 for abt. 1800 DM...

@ clark Seriously: Thanx a lot !!! Actually this is the formula for hoop stress, written down in a gunsmithing book I own. The thin walled one... Even if the results are equal, where do you draw the line between thick and thin walls ? And finally, I know that your last question is...

@sunray This Information was from Truby´s "Zips, Pipes and Pens", Page 34 ;-) NoName0815 @hcker2000 Well there are ways, but they usually cost lot of money and a lot of paper-work + background checks + knowledge test etc. A lot of pain... for a little bit of experimenting....

@ Jim Even if those tests have been done several times, I don´t have access to the results :( I do know that any cartridge case will burst at some amount of pressure, but I didn´t know that it´s part of the pressure system. I thought of it as just a container, to keep all the ammo...

Hi Jim, thanks for your answer. I don´t think - as a designer - that you would have to worry about reloaders. There´s a maximum amount of pressure normed by CIP for each caliber. And as a relaoder you are responsible not to overload your cartridges. There are so many cases where guns...

Hi, finally some replies :) @owen: I don´t calculate the peak pressure. The maximum pressure of every caliber is standardized by CIP. @1911 Tuner: Interesting Point. That could explain, why my calculations are wrong. My calculations are "worst case scenarios" in which the whole...

Nobody ? Is nobody out there who knows something about barrels ?

Hi there, I´d like to ask the experts here how they do their barrel designs. I have books about this, but when compared to the reality they have nothing in common. For example: A PPK Barrel fits after my calculations just the minimum amount of wall-thickness (Using 4140 Steel or eqal)...