Author Topic: 9.3X72R (Read 542 times)

mbyoh · « **on:** September 16, 2003, 07:05:45 AM »

I'm looking for any advise from anyone who loads for the 9.3X72R cartridge. Have a pre-War drilling in excellent condition. Have the dies and empty brass. Just bought some IMR4759 powderthat was recommended.

I am looking for a good source for CAST bullets as I don't want to use jacketed. ALso, if you have some pet loads, I am interested.

Also need source for 2 1/2" 16gauge shotshells.

THanks,
Mike

onesonek · « **Reply #1 on:** September 16, 2003, 01:18:04 PM »

Hi mbyoh,
Are you sure? Of all the 9.3's, I know of the 57, 62, 64, 74, and 82. Only the 74 and 82, are rimmed. It's possible I have missed one somehow though.

mbyoh · « **Reply #2 on:** September 16, 2003, 02:05:16 PM »

Onesonek,
Yes, it is the rimmed 9.3X72R cartridge that was common in the pre-war drillings. Tapered baby cousin of the 9.3X74R and with about the equivalency of a 38-55 in power. Big looking sob, but very tame I understand. I just picked up the powder and am going to work up a couple mild loads to try this weekend.

I have a source for .366 cast bullets,but won't recieve them for a while. I read somewhere that the 9.3 bore can range from .358-.366. I am going to load a few of my cast .357 mag bullets (153gr) and see what the result is. Can't harm it- they are on small side, if anything. I hope big enough to gas seal and to bite into the rifling. We'll see. If they work great- cheap source of bullets.

Mike

onesonek · « **Reply #3 on:** September 16, 2003, 05:08:58 PM »

Cool, On three sites I use for reference, I couldn't find it. (just goes to show, one never stops learn'n) But found it eventually. I always thought one of those "bird n bucks", would be fun. Good Luck with yours! Onensonek

The Shrink · « **Reply #4 on:** September 17, 2003, 01:54:11 AM »

Mike

It's relatively east to check your bore on thet 9.3 if you have access to raw lead and a dowell. Get a soft lead ball about .375 and drive it into the bore from the muzzle. Place a dowell into the breach and drive the lead ball onto it, and give it a whack to fully upset the lead into the grooves. Then remove the dowell and drive the lead ball the rest of the way down the bore to the breach. If you oil the bore well first it will be easier.

As you drive the lead, check for differing amounts of pressure needed to push the ball through. This will check for minor differences in bore diameter the length of the bore.

Once you have the lead ball out, measure it land to land and groove to groove. Now you know your bore. If you have an odd number of grooves you might have to get a machineist or gunsmith to measure it for you, it takes a special mike to measure offset.

You will generally want your cast bullet to be bore size or slightly larger and soft enough to bump up to groove size. If you go with a hard cast bullet, you may want groove size. Go over to the cast bullet forum or the Black Powder Rifle forum to get more precise information on this.

If you have an odd size bore custom molds are available for $150-200, probably worth it to get that rifle shooting.