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First off, I know very little about wildcatting cartriges and such, although I reload quite a bit. I really like my 9.3X62 and have noticed that there hasn't been a wildcat that gets a lot more velocity in 9.3 like those for the 375 (atleast one that I could find)I was wondering if a 9.3 Ruger based off the 375 Ruger would be possible. What about a 9.3 UltraMag off the 300 RUM? Please forgive my ignorance if I am missing something obvious. Does anyone have any thoughts about the viability of either of these combinations? Thanks in advance!

Last edited by stephenwhite; 06/16/08.

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9.3 BS is the only way to go.

Of you wantum speed, I would got 9.3/375 Ruger.

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Has anyone heard of a 9.3 Sisk? From what I could gather it is an 8mm necked up to 9.3 Might be just what I'm looking for....


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I saw specs for a 9.3 RCM, which could be trick if you want a lot of thump in a short action. Would have slightly more capacity than a 9.3 Barsness-Sisk, which is on a necked-up .350 Remington Magnum case. I believe the 9.3 Sisk is based on a necked-up 8mm Remington Magnum case. You can go to Charlie's website and get the details on anything he builds.

If I wanted to hurt myself that way, I would build a 9.3-.375 Ruger. There would be no particular point to it, but then having a particular point of utility would not generally be the point of wildcatting anyway grin.

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The 9.3 BS and Sisk were made by or at least named for the custom rifle maker Charlie Sisk. The BS is IIRC an 8mm Mag case necked up the Sisk is the 350 Rem Mag case necked up.

The 375 Ruger case would do every thing the 8mm Mag case does. Or you could take the 416 Rigby case and make a shoulder mounted field piece. The Ruger case lets one use a larger variety of actions as it is 2.5 inches long.

Pick a case and build. Oh how we like to watch!

I want to make an 8mm with the 375 Ruger case just so I can call it the 8mmwapiti


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9.3 Ruger...speedy.

9.3 RUM...ever speedy.

9.3 STW...ever speedy too.

9.3 Rigby...Wicked Speedy!


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There is a 9.3 Rigby - the 366 DGW. It was developed by a gunsmith in Maine. I'd look at some of the standardized 9.3 cartridges:

9.3x64 Brenneke - Definitely is on par with the 375 H&H in terms of performance. Brass is scarce and pricey and it's got that funny rim dimension but a fantastic cartridge.

9.3x66 Sako (aka 370 Sako Mag.) - Reaches the lower end of 375 H&H performance. Standard (.30-06) rim dimension and is available in the U.S. now - Sako 85.


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Nothing at all wrong with your idea and I do not see where the caliber has been beat to death by too many wildcats like we see in 25-30 cal's. I would Probably opt for the Ruger case and build it on a CRF winny.

Last edited by safariman; 06/16/08.

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I know the gunsmith who did the 9.3 based on the 416 Rigby. In fact, I have fired the rifle although it is ported so I cannot say what the recoil would be like without it.

FMI go to Cartridges of the World, 10th ED. and find it in the Wildcat section. Another poster on this forum once pointed out that 9.3 mm projectiles were not made to go that fast, but with premiums I suspect they hold up just fine. Our friend hunted the rifle on PG in 2001 with good results. I think his only complaint is the weight of the rifle he built is a bit too heavy but he can certainly discuss specifics with you if he sees this post.

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stephenwhite,

I would tap into the European 9.3 cartridges before jumping into a wildcat; I am thinking the 9.3X64 would be a really good place to begin.

jim


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.375 Ruger brass is a whole lot cheaper and more available than 9.3x64. One quick pass into the die and it's formed. And I'd bet that custom 9.3-.375 Ruger dies wouldn't cost a whole lot more, if any more, than 9,3x64 dies.

Yes it's a wildcat, but for practical purposes the 9,3x64 might as well be in this country. It's not like you can buy ammo over the counter anywhere.

Besides...he wants a wildcat... grin.

Dennis


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If this is your first wildcats foray, consider something relatively simple ie. just a straight necking up. Now I'm more of a 35 cal guy then a 9.3 cal guy ... but the 300RUM case necked up kind of makes sense. Add one 320gr Woodleigh PP and 320gr FMJ and that's a whole lot of stomp! There's a few streamlined mid-weights now that make it useful when reaching out too. Use a cheap RemSPS in 300RUM as your donor action to get the modified magazine and rebarrel. A bit cheaper yet but less performance, find a S/H 300WinMag and consider something off the 300WinMag case. A 'smith with a decent reamer and neck/throat reamer selection could do your chambering without the expense of a specific custom reamer. Likewise an engineering shop should be able to open a set of dies for you to get you a 9.3RUM FL die and modify your seater for use to.

Oh ... and beware the lure of wildcats. They're addictive but 99% of the time, hardly worthwhile in a practical sense. But its a hell of a lot of FUN and will improve your skills as a reloader!
Cheers...
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Not as speedy as you want perhaps - but If you wanted a handier short action rifle - a 9.3 WSM would work well I think. I know of a few 375WSMs out there that were a great success.

I rechambered a 350 RemMag into a 350 WSM (35Sambar). It has been a success too and a sensible conversion. The ammo is easy-to-make too. It chronys 2750MV with 250s and 2450MV with 310 Woodleighs with top loads. A 9.3 WSM should be able squeeze out a little bit more power at the muzzle.

The Win70 WSM actions have the longest mag box length I believe of all the WSM chambered bolt guns. So that would make a good donor action I think.

Con's right - cats are fun!

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Perfect example of why I enjoy this place. About the time I get an idea (considering a 9.3-375 Ruger) I find a two-year-old thread on the 'fire where it has already been discussed.

I mean, clearly the 9.3x62 isn't powerful enough, right? laugh

I'm thinking of buying one of the many 9.3xSomething rifles that are around in Mauser actions and having it re-chambered into the 9.3-375. Should be an easy project as builds go.


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Just go 370 Sako and have another round in the magazine.

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Had that thought, too. Would be even easier & probably a hell of a lot more likely as little time as I have to tinker.



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No brass to be found for the Sako. 375 Ruger is available & (presumably) just a simple full-length re-size before loading.


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Quote
No brass to be found for the Sako.


Sure there is.......

http://www.z-hat.com/9.3x66%20Sako.htm


I'm sure if a guy tried hard enough he could have 370 Magnum headstamped brass shipped from Canada or Europe

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One of my hunting buddies of 30+ years had Bevan King barrel him up a 9.3 on the 300 Win Mag case this past summer. It is built on SAKO with one of Bevan's fine barrels, 26" long.

He was going to build a 9.3X64, but as muledeer mentioned above, it was no more expensive to do the wildcat, and 300 brass is everywhere. He has been mickey-mousing brass using a 338 Win die for the first step, and then 358 Norma mag sizing die with a 9.3 expander in it for the second.

CH is making a die set for him. They told him it is not the first set they have made for this wildcat, however it will still be six months delivery.

He gets way over 2800 fps with 286 gr Hornadys, and 2900 with Speer 270s using H4350 in the 26" barrel, and the rifle groups consistently around three inches at 200 meters.

He calls it his canoe gun! smile It will be interesting to see what it will do, once he gets a proper die set

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Originally Posted by SU35
Quote
No brass to be found for the Sako.


Sure there is.......

http://www.z-hat.com/9.3x66%20Sako.htm


I'm sure if a guy tried hard enough he could have 370 Magnum headstamped brass shipped from Canada or Europe




At $2 per piece I could pay for a new 9.3 barrel for the 9.3-375 wildcat!

Now, the Canada thing might be a doable plan. I have a buddy up there who might be able to square me away. Still, Opening up the chamber on an existing 9.3 barrel would be easy with any of these options.




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