Decided to take a gamble and have a 9.3 x 66 Sako built on a 98 action.Ordered the reamer and dies from the US,brass has been promised by local Sako importer here in Australia-will keep you posted when the 'smith and the stockmaker have finished.

Gidday Wombat, good luck with the project. I didn't think an Australian gunsmith had the reamer. What twist did you finally decide on?
malcolm56

work will not start till all bits have arrived.
Bob de Vries is lined up to do the metal work

Wombat, I am fascinated with this caliber. I cannot find any drawings or specs on it. All I read is that it is the longest case that will fit into an 06 length action, and it should give the 375 H&H a run for it's money. If you ordered the reamer with different sized pilots, I imagine you could ream out any 06 based caliber. eg 25/06 with a 66mm long case would be up there with a 257 Weatherby. 30/06 with a 66mm case would probably almost equal 300 Win mag and last but not least, 35 Whelan with a 66mm long case would be the ants pants. This 66mm cased wildcat might even blitz the Hawk line of calibers.
Good luck and please keep us posted
Malcolm56

Standard CIP twist for the 9.3x62 is 1in14". That allows the standard 286gr to be stabilised. Above 286gr I have no personal knowledge.

My own 09 Argentine allows a 286gr Nosler partition to be seated at the cannelure and fit the magazine. Add an extra 4mm and I think the mag may need some lengthening.

You can find out about anything you want about this cartridge if you correspond with Erkki Kauppi (Err Kee Cow Pee) @ the Sako factory in Finland.
He worked on this for years.
Sako Oy
1100 Riihimaki 10
Finland

Erkki is a very good fellow. As Harry mentioned, this cartridge is his baby:



I am ordering a reamer and gauge tomorrow, and will convert a Sako AV in 30-06 as soon as they arrive.

lawndart

Thank you cewe!

On top are two 9.3 x 66 Sako cases; below are two 30-06 cases.

lawndart

What does it have over the 9.3x64 B.

I have two one in a /03 springfield and one in a S&L .

Does it really do that much more then the 9.3x64 ?

9.3 X 66 Sako:
factory loads:
250 grain ............2760'/sec
286 soft..............2560'/sec

it has slightly more nuts than a 9.3 X 62
source.....Cartridges of the world...10 th edition.

I confidently say that it has nothing over a 9.3x64B. Mr Brennekes creation would be on my list long before the Sako.No better medium bore match for a Std98 than a 9.3x64,
-both of the same era',
-one more in the stack than a .375,
-kills just as well,
-no need for a Magnum action.
Having said that, If it made Erkki happy to have developed it(9.3x66),and it makes Wombat happy to own one, then that it is a good thing for them. Goodluck Wombat.

Martin,
It has nothing on the 9.3 x 64. It lags slightly behind the 9.3 x 64 in energy/velocity. It is the most you can get out of a 30-06 action length and retain the ability to load five rounds. Conversion is as simple as screwing on a new barrel. When we start getting the Norma brass over here it will be necked up and down (mainly down). Think Hawk/Scovill, without all the hassle.
It treads on the 375 H&H without the need for longer actions and bigger bolt faces.
It will be an awesome elk, moose, eland, bear cartridge. Sport hunters use the 9.3 x 62 on buffalo ( pick your shots carefully, and have a PH back up). The 9.3 x 66 will be better in that role. It will have less recoil than the the 9,3 x 64 cartridge; that may be a factor for many hunters. We all do better with cartridges that kick a little bit less. It is a very balanced cartridge. For that matter, the 9.3 x 62, 9.3 x 64 cartridges are well balance cartridges as well. I believe that with North Fork, Partition, and GS Custon bullets it will do better on the larger/meaner beasties. Can you imagine its effectiveness on lion, lepord. and carefully chosen shots on buff. With a GS Custom flat nose or a North Fork cup point or flat point you have an acceptable hail mairy shot should the need arise.
In the interest of full disclosure I freely admit to believe in a modestly large for caliber bullet motoring along at a moderate velocity a' la th 9.3 x 62. The 9.3 x 66 allows the use of long 286 grain monometal without a substantial velocity decrement and comcomitant pressure spike. What is not to like, eh?

The 9.3 x 64 is a different beast all together. 375 H&H balistics in a stndard length action. It truly equals, and sometimes surpasses the ballistics/ noise and recoil of the 375 H&H. That is a pretty decent neighborhood to hang in. The gunsmithing wii be litle more intricate; mainly as it pertains to opening the boltface and especially the feed rails. Some care may be require in the magazine box to ensure bind free feeding. The bolt face and extractor must be tuned to grab that cartridge and smoothly control its path. Recoil is more of an issue. I conceptualize this rifle as a carry all day, shoot just once affair. best to keep a little meat on the barrel to allow a steady hold after trudging through the black timber. No shaving ounces here or there (except for those of you who live that life).

I am building at least one 9,3 x 64 on a Winne CRF action.

Now for the big boy. I ahve been running down some 9,3 x 70 Expert Magnum brass for the mother of all 9.3 cartridges. It is most definitely a Magnum. That, however, is a discussion for another time and another thread.



This picture was first posted by Husky, and is freely and irresponsibly plagiarized here.

quote:

Now for the big boy. I ahve been running down some 9,3 x 70 Expert Magnum brass for the mother of all 9.3 cartridges. It is most definitely a Magnum. That, however, is a discussion for another time and another thread

9.3x

I thought the mother of all 9.3's was the 9.3x416 Rigby ? hell i was going to make a few bullet's for the boys that own them .

290 Grain Match Rebated Boattails
using a P4 point.

Your from the same neck of the wood i spend most of my life hunting in and along the Owyhee river all the way to the dam..

Ya know there used to be a super big swimming pool there about 5 miles down from the dam.
Till thay blew it up around 1969 ..or 1968.


Martin

PA Bullet's

Too many rednecks and illegals used the swimming hole for their weekly baths. EPA had a hissy over water quality. So now we have stinky rednecks and field workers that routinely knock buzzards off of shit wagons just by walking up wind .

lawndart

quote:

Originally posted by lawndart:

What is not to like, eh?

COL with a 286gr bullet with cannelure such as the fantastic partition is going to stretch past a standard length Mauser magazine box...

I ain't interested in MV but I would point out for the record that Sako are a little disingenious showing MV for the x62 with single base powders and for the x66 with double base powders. CIP pressure limit for the x62 is 56kpsi, I wonder what it is for the x66?

Not trying to sound negative just point out some points that occured to me in the light of my experience with my 9.3x62

I believe 1894 has it correct. Sako has designed the 9.3x66 to allow 5 cartidges in their new T3 action which is slightly longer than a mauser 98. By the time you seat any bullet deep enough to cycle through a normal 06 length magazine you will be back to the same capacity as a 9.3 x62.

quote:

Originally posted by snowman:
I believe 1894 has it correct. Sako has designed the 9.3x66 to allow 5 cartidges in their new T3 action which is slightly longer than a mauser 98. By the time you seat any bullet deep enough to cycle through a normal 06 length magazine you will be back to the same capacity as a 9.3 x62.

NO I run my 270 grain and 280 grain and 283 grain bullets at almost max speeds and pressures and thay fit just fine in both my 9.3x64's thank you

When I get the 9.3 x 66 and 9.3 x 64 built; plus my present 9.3 x 62, I'll have three. I'll try them all side by side by side, and see what happens. Tweny-four inch barrels all around.

It is good to be a gun slut; I'll shoot (almost) anything.

lawndart

quote:

Originally posted by lawndart:
When I get the 9.3 x 66 and 9.3 x 64 built; plus my present 9.3 x 62, I'll have three. I'll try them all side by side by side, and see what happens. Tweny-four inch barrels all around.

It is good to be a gun slut; I'll shoot (almost) anything.

lawndart

24 inch barrel's ?

quote:

It is good to be a gun slut; I'll shoot (almost) anything.

be careful what you wish for... You just might wind up holding a 700 Hubel Express and thinking to youself. Dam! why did i say i would try almost anything .


Martin

PA Bullet's

quote:

Originally posted by lawndart:
When I get the 9.3 x 66 and 9.3 x 64 built; plus my present 9.3 x 62, I'll have three. I'll try them all side by side by side, and see what happens. Tweny-four inch barrels all around.

It is good to be a gun slut; I'll shoot (almost) anything.
lawndart

Oh I agree............................the .35 whelen is just one I can't go to bed with yet.................don't find her attractive at all, same as our indigenous bretheren here in Oz don't find there women attractive either, but a few beers could change that for the .35 whelen and our indigenous women

Yeah PC,
A bowl of grubs and a cold case of stubbies will get you anything you need out back.

lawndart