shorten 7 mm ultra magnum

[rickiesrevenge]

What kind of steel did you use for the bushings?

 

[kombayotch]

I used O1, but I haven't hardened it yet.

 

[kombayotch]

Finally got my GO gauge and chambered the rifle, so I was able to set the proper shoulder location, trim and neck turn. Definitely want to use a 20 degree angle die if you need to move the body-shoulder junction. Tying to move it with a 35 degree shoulder angle die more than a few thou causes it to collapse.
.

Unfired 300 RUM, unfired 7mm Kraken, fired 7mm WSM

I have measured the case capacity to be 100.4 gr. H2O overflow and about 93.7 gr. H2O to the neck. COAL is 2.650", neck is 0.370" long. CIP length mag has an internal length of 3.775"

 

[kombayotch]

btw, 21st Century neck tuning tool is awesome! It takes the neck down to 12.5 thou in one pass with little effort. All the cases mic 12.5-12.6 thou.