6.5 Mega done!

[Justice1327]

Just don't forget to grab it before you drive off.

Yes, my wife told me the same.

 

[Justice1327]

N570?

just a starting point

 

[MagnumManiac]

The WSM brass will end up .070 short, as per Rich Sherman, and I'm sure he removed all the taper possible from the body.

Well yes, I run .005" per inch on my 416 Rigby Improved cases and, I just change shoulder angle depending on calibre.
35°, 40° & 45°. Help with throat erosion reduction.

Cheers.

 

[Phil Rizzo]

Rich has pointed that out, "containing the flame" I think was his description.

 

[MagnumManiac]

Rich has pointed that out, "containing the flame" I think was his description.

Yes, keeps the flame in the case with a delay before it migrates into the throat, allows a more complete burn also.
My first 30 cal 416 Rigby Improved had a 30° shoulder, didn't do anything to help throat erosion, then 35° which helped, but 40° seems to be best, in 338/375/416 45° rules the roost.
Longer necks help also, which is why I am intrigued with the 6.5 Mega case. Rich must have them made for him.

Cheers.