9.3x72R... Help?

[Old Ironsights]

I have a German Drilling in 16x16x what appears to be 9.3x72R.

I'm pretty sure it's not a 9.3x74 because my Cerrosafe cast didn't show a shoulder. http://ammoguide.com/cgi-bin/ai.cgi?sn=pgeQPEpRtc&catid=420

It COULD be an 8.8x72R, but I just can't get a definitive answer.
http://ammoguide.com/cgi-bin/ai.cgi?sn=pgeQPEpRtc&catid=303

The castof the lands & grooves is right for a 9.3x72R, with an 8.8mm land (stamped on the barrel) and a proper .365 groove.
http://ammoguide.com/cgi-bin/ai.cgi?sn=pgeQPEpRtc&catid=248

However, since it is a straight wall, my Cerrosafe doesn't give me a good view to the actual chamber/case/leade dimensions.

Does anyone know where I could find out how much leade there would normally be between the case mouth and start of the riflng?

[badgeredd]

I have a German Drilling in 16x16x what appears to be 9.3x72R.

I'm pretty sure it's not a 9.3x74 because my Cerrosafe cast didn't show a shoulder. http://ammoguide.com/cgi-bin/ai.cgi?sn=pgeQPEpRtc&catid=420

It COULD be an 8.8x72R, but I just can't get a definitive answer.

The castof the lands & grooves is right for a 9.3x72R,

However, since it is a straight wall, my Cerrosafe doesn't give me a good view to the actual chamber/case/leade dimensions.

Does anyone know where I could find out how much leade there would normally be between the case mouth and start of the riflng?

According to my Hondloader's Manual of Cartridge Conversions there is a 9.3 x 70R and 9.3 x 72R, both are straight wall cartridges with a bullet diameter of .365 and a rim diater of .482.
Case lengths are 2.75 and 2.84 respectively, while the head diameter is .427 on both. Rims are .06 and .056 respectively. Unfortunately there isn't a lead drawn or dimensioned in the book. Hope this helps you out. Also there is a caution, "Do not confuse with 9.3 x 74R Sauer."

The 9.3 x 72R Sauer is a bottle necked cartridge with a rim diater if .510 and head diameter of .473 with a rim thickness of .047.

[Old Ironsights]

... Case lengths are 2.75 and 2.84 respectively, ...
Here's my problem. From my Cerrosafe cast I measude 3.32" from the inside of the head (only measurable point from a chamber fill) to the first measurable point where a Land is visible.

Which means squat as far as I can tell.

3.32-2.85+.051 (rim thickness) = .521 - which seems awfully long for ogive protrusion + Leade...

But maybe I'm off base... :confused:

[Larry Gibson]

I've had these thirty-five 9.3x72Rs laying around for some time and have no need for them. They are RWS factory loads and appear to be 2 different loads; 34 of one and 1 appears different as it has a larger driving band and a different ogive. I've layed one of each load on the caliper which is set at 3.32". Any other measurements I can do?

Larry Gibson

[badgeredd]

What I am reading in the HM of CC is they used a 286 grain bullet and their source for reloading info is JJD, which is the initials of the author. He gives the 9.3 x 73R as brass to make the 9.3 x 70R from and says the 9.3 x 72R is factory available. I suspect the bullet would be rather long but havent been able to look it up yet. Seems reasonable that there would be a fairly long lead for the bullet, at least IMHO. Oh yeah, they show 39 grains of BL-C2 I'd look up some bullets, especially solids to see if it all made sense.
Good luck.

[Old Ironsights]

Bless you Larry.

You wouldn't happen to be wanting to part with some/all of those would you?

[badgeredd]

Looks to me like Larry has the ticket.

[Larry Gibson]

Bless you Larry.

You wouldn't happen to be wanting to part with some/all of those would you?

I know we're working a deal on the PM side but I was just noticing the size of those primers. These may not be boxer primed, do you want me to pull one and see?

Larry Gibson

[Old Ironsights]

No, that's OK. I'm not so much looking to be able to reload them as to pull one myself, shoot a couple if they look safe, and keep the rest with the gun.

A gun without ammo is useless. ;)

[Larry Gibson]

A gun without ammo is useless. ;)

Aaaaahhhhh....soooooo.........grasshopper....price of lead just go uppie......

LOLs...back to PM.

Larry Gibson

[Old Ironsights]

Hokay boss-man. ;)

[AkMike]

I've got a couple of those 9.3X72R's and you can still get fresh Norma brass that is boxer primed if you look around a bit. It's about like a 38-55 powerwise.