Lonewolf74
Well-Known Member
- Joined
- May 12, 2016
- Messages
- 735
Radius shoulders lend themselves to laminar flow. Sharp angle shoulders lend themselves to turbulent flow. I'm not an expert in the science but in simple terms the radius shoulder and laminar flow allow gas and un-burnt powder to flow easier into the barrel. The sharp angle shoulder and turbulent flow creates a more complete burn within the case thus increasing the efficiency of the cartridge. One of the reasons Ackley improved is able to achieve higher performance in some cartridges.I hear so many people say the radius shoulder sucks. So you have a "double angle" on your standard cartridges and a "double radius" on Weatherby.. So far, every time I asked why the double radius sucks, nobody was able to answer. For my education, can you please tell me what about it sucks?
A side effect of the radius shoulder cartridge is ease of manufacture. It is easier to produce sharp angles and straight lines therefore precision is easier to achieve. In other words producing a die that can match the shoulder dimensions needed for your chamber should in theory be easier. Not saying the radius shoulder can't be done to the same degree of precision just that it's easier and better chance of being done with the sharp angles and straight lines.