7mmRm brass form to 300 wm brass??

[30-06 boy]

i aquired some 7mmRm loading goodies recently.i however dont have a 7mmRm.i do however have a 300wm.is it possible to run the 7mag brass through my 300wm fl die,then blow shoulder out with cream of wheat fireform method?both of these calibers headspace off the belt.headspace should not be a problem while cow fireforming.the only problem i see might be the 7mag case length and shoulder/neck juncture are roughly .100 to.150 thousandths shorter than 300wm.will this or could this make the necks of the "formed" brass short?help guide me here.i'm driving down a road i've never driven on before.jasonlight bulb

 

[P KUNDA]

Absolutely

.100 to.150 thousandths shorter than 300wm.will this or could this make the necks of the "formed" brass short? jasonlight bulb

,,,,,,,,,,,,,,,,,

Peter

 

[boomtube]

Forming new cases and shortening a neck maybe .020" won't really make a difference. Shortening .120" on an already short neck is far too much.

 

[trueblue]

30-06 boy,

Sent you PM, but didn't get response. I have 1,000 pcs of 7mm Rem Mag brass. Would sell you some if you need it. Send me PM.

 

[30-06 boy]

gun)trueblue,sorry for not responding.i was just trying to make these 7mm mag cases usable to me.i tried what i said and the necksare way too short.lesson learned.but thanks anyway.jason