A pair of Q's for the Shehane Drivers

[Mr. Ten-X]

Q1: If a person was to go through the effort of buying a 2-reamer set (chambering and forming) for the 284 Shehane, would there be any reason not to punch that shoulder to 40 Deg right away?

My intent would be to have a Newlon sizer die and a Wilson hand die for seating anyway, so tooling is not an issue. Would headspace off the neck/shoulder jct for firing initial shots with std brass.

Q2 has to do with the neck/shoulder donut that many seem to be avoiding by seating the rear bearing band of the longer booolets just ahead of that neck/shoulder junction. Nobody is inside neck reaming any more?

 

[newboy]

Q 1 up to you realy , the shehane as it stands changes the body taper on the strait 284 . to change the the shoulder angle as well might be more work without any more reward?+ you would need to fire form before usefull load data could be gained.(shooting a strait 284 case in a shehane chamber to form the case is still very competative )

Q2 use a reamer with a 260 freebore rather than 220 /240 this will seat the bullet ojive base forward of the doghnut area. so no issues.

 

[Erik Cortina]

Some guys have done the 40 degree shoulder and are having excellent results with it. I don't know what the gain is over the Shehane though.

You could just buy a chamber reamer and contact Mark Spemcer at Spencertoolandgrind.com for a sizing die. He does not need a reamer to make you a custom die.