Gunsmithing Feed ramp dimensions

MrSmith

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Nov 19, 2009
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I am rechambering an AR-15 for a wildcat. I have looked at the feed ramp shapes of different cartridges. At the moment I'm leaning toward cutting the ramps slightly over the diameter of the straight wall case at 45*, 22.5* each side of center. Is there a design method or "rule of thumb" for shape and size.

Thank you,
MrSmith
 
This maybe what you're looking for.

Or maybe this:

350-Legend-extension[1].jpg


Which is actually a 350 Legend barrel extension.
 
Last edited:
That's what I needed. I'll mimic the 350 Legend and see how it works. If needed, modification to the Tromix configuration would be simple.

Much appreciated.

Thank you,
MrSmith