Old 30x47

[Sechrist2015]

Have an older build 30x47(case measures 48mm tall?), And have 50 rds of ammo for it that was loaded some time in the 90's as well as new unfired brass that has been bumped back and neck turned. They are 308W cases. I'm guessing this is a lathe project to cut down a 308 FL die to make a form die to bump the shoulder back? The loaded ammo has a shoulder that appears to be 30-35°(?) But I can't get a solid measurement with tools I have currently.

Any advice? Or just touch it with a full size 308W reamer and let her eat?

 

[RGRobinett]

Dimensionally, there were a multitude of [so called] 30x47 cartridges, based either upon the .300Savage, or, the shortened .308 Win. - most featured 30 a degree shoulder angle.
Some, especially the "shortened" .308 versions maintained the 20 Deg. angle of the parent case: for those, a shortened .308W die usually worked.
Even for the steeper shoulder angles, the short .308 die works well for initial shoulder set-back prior to neck-turning and fire-forming. However, following F-F, for proper head-spacing, of the 30-35 deg. type, you'll need a different re-size die. RG

 

[Sechrist2015]

Left hand side is bumped and turned new brass, right hand side is FF and reloaded ammo. Unfortunately in this massive mess of reloading equipment that came from the same estate, there were no dies for this at all.

 

[Sechrist2015]

And thank you for the input RG. Your wealth of knowledge is, as always, much appreciated. This gun is going to make me rip my hair out. I'm terrified to shoot it for fear it makes little bitty one hole groups.

For reference, it is a trued 700 SA repeater w/ blind mag, Jewell 2oz w/bottom safety, 23" Hart 13 twist barrel, and McMillan 2 1/2" wide Hunter class stock.

 

[RGRobinett]

And thank you for the input RG. Your wealth of knowledge is, as always, much appreciated. This gun is going to make me rip my hair out. I'm terrified to shoot it for fear it makes little bitty one hole groups.

For reference, it is a trued 700 SA repeater w/ blind mag, Jewell 2oz w/bottom safety, 23" Hart 13 twist barrel, and McMillan 2 1/2" wide Hunter class stock.

It appears to be a 30, to 40 deg. shoulder - my eyes are too old to visually micro stuff - and the body tape appears to be substantially straightened. If you have one, and the shoulder angle is, indeed, 30 deg., it is possible (?likely?) that a Redding, L.E. Wilosn, or, other 6.5x47LAPUA FL/neck-bushing re-size, body will allow proper resizing and shoulder 'bump'.

For thirty cal, in order to eliminate [undesired] neck sizing, you'll likely have to open the neck-port diameter
just enough to allow 'free' passage. When SAAMI spec'd, the head-space, shoulder diameter, and angle, my Hugh Henriksen 6.5x47, and 30x47 LAPUA dimensions were within 0.001" of my original (Dan green/Forgreens) 30x47HBR chamber reamer. The biggest difference is the web diameter.

The Forgreen's reamer was ground to match the Winchester .300 Savage and Remington .308 UBR brass, which measuer 0.463" -0.464" across the case-head, just above the extractor groove. Thus, the old school chambers - usually 0.466" to .467" Dia.)don't work well with the larger diameter (roughly 0.469") cases. Hope this helps. RG

P.S. Yes, it will probably "SHOOT" - if it does, send me a couple of fired cases, and I'll C if I can help you out.