Looking at the velocities folk achieve with 286gn/9.3x62 it seems 2450fps is common.
Nosler also has 286gn9.3x74r@2430.
ConleyCartridge offers 286gn@2500.
Personally I believe a person can do alot with the same weight bullet at 2300fps, but Id like to do it on a smaller case. That case being the 8x60s.
It would give me the longer neck I like(.400"+) and we could blow it out in the shoulder like 9.3x62, maybe more .459"?(similar to 257AI,7x57AI)

Im thinking along the lines of... if a 165gn30cal at 2600 is all you want/need,why not do it out of a 308win instead of 30/06 train of thought.

Your Thoits pLease...

Sounds like the solution to a non-problem. Why not just reduce the powder charge in a 9.3x62 case? Kudude

PS: If you reduce the load, you might want to use Woodleigh round nose bullets. K-d

I use 55gr of RL15 in my CZ with Privi Partisan 286gr JSPs, gives 2250fps out of an 18.5" barrel, recoil is noticeably less than loads at 57 to 59 grains, and I can live without that extra 50-100fps if it lets me practice more.

are you thinking short(er) case for any specific reason? Why not look at the 9,3x57 mauser?
Otherwise, just load it down a bit.

Rich
DRSS

the 9,3-350 rem mag or 9,3 b.s. (barnes sisk) is a goodn or go the 9,3-284



both short actions would do you well without high preasure and an easy 286@ 2300

i like the 284 version best...just find a used 260 rem, 308, 7-08, 243, 358 win (please not the 358 win) or 338 federal and rechamber/rebarrel and viola!...lets dub this cat the 9,3 b.s. this one not being barnes sisk about 5% less capacity of the 62 but more efficient and use 9,3 barnes sisk loads for a guide.

quote:

Originally posted by kudude:
Sounds like the solution to a non-problem. Why not just reduce the powder charge in a 9.3x62 case? Kudude

Neck up the 8x60S to .330, put a Woodleigh 250grs Weldcore on it and you`ll have a wonderfull round: the .318 Accelerated Express!!

Okay,

Option2A: 9,3WSSM or SAUM

Rich
DRSS

quote:

Looking at the velocities folk achieve with 286gn/9.3x62 it seems 2450fps is common.

Just load to 2250 fps and it would be more pleasant to shoot & just as effective.

quote:

Why not just reduce the powder charge in a 9.3x62 case?

Very simple solution and you could drop the bullet weight as well if you so wish.


Warrior

What Im getting at is,If I needs only 2300fps, I can do it in smaller case than 9.3x62. I put 8x60s up as an initial candidate. That 9.3x57 looks good,but may not get me 2300fps/286gn even if improved.Could be worth a try. A little less vel. 2250? would still be ok.
I guess plain old 30/06 simply necked to 9.3 would just about do what I want.ie; give me less capacity and the much longerrr neck I much prefer.

THe old NF 285gn.375@2300 penetrate very well,
I guess I would get no less with .358cal270nf 9.3cal286nf .375cal300nf at similar or less vel.
Just want to do it out of the most efficient case for the particular bore&weight.

any way,not taking toooserious, has to be??...>>>> fun!

Woodjack,

Personally, I think you're really nit picking. How much difference is there really between a 60mm case (8x60) and a 62mm case (9.3x62) ???

Heck, you can push a 220 gr bullet at 2400 fps out of the 8x57JS. And, according to Woodleigh's catalog, you can load a 250 gr bullet to 2250 fps out of the 8x57.

Kynoch's original ballistics for the 9.3x62 was a 286 gr bullet at 2250 fps. RWS and S&B currently load a 285 gr bullet to 2280 fps (695 m/s) in the 9.3x62. Why try to reinvent the wheel with a slightly shorter case than the 9.3x62??

-Bob F.

Of course I am.
Its my exercise to find how small a case I can go(most efficient capacity) to send 9.3 286gn@2300 at peak workable pressures.Even if its means 60kpsi or a little more. Much like 9.3x64B pressures. It would be in a modern receiver & shorter case life is not a concern.
If 9.3x62/286gn is achieving 2400++mv then its not the answer im looking for.
Im not trying to reinventing the wheel, just cutting a different size one,and no one has to ride in the cart but me.

cheers

try the .366-08 it has been done here in Sweden..

/C

figure you will duplicate the 358 win in the same bullet weight...turn the 5 into a 6 for a 368 win



you will have about a 30 thou per side shoulder and if you want to get fancy do an a.i. version for 2 more grains of capacity and loooong case life! damn i am good! thats it an a.i. .463" at the shoulder for a 35ish thou shoulder...368 win aka 368 boomer-woodjack or 368 b.w.

neck up and fire form and it will have a cal length neck at 2.015"

get cracking woodjack before someone beats you to having the first one

The 9.3x57 is fantastic!!! 2000 fps with the 286gr. seems perfect to me, especially with the standard cup and core bullets. I load the 270 gr Speer to 2070 fps. Fantastic Black bear and spike elk load for the brush!!!

quote:

Originally posted by Woodjack:
Of course I am.
Its my exercise to find how small a case I can go(most efficient capacity) to send 9.3 286gn@2300 at peak workable pressures. .... cheers

Whatever trips your trigger is fine with me!!! I think you're on the right track then with something like a 9.3x57 or a 9.3x60 (on the 8x60 case as you mentioned). Just my guesses...

Cheers!
-Bob F.

if you want small exotic and efficient...i necked up a 243 wssm to 458 an it is coooool! same capacity as the 358 win. just go 8 thou more and you rebarrel a browning wssm action. also it will work in ar15's

Boomie has a point, the 284 case is about the same capacity as the 9,3x62. Cut the reamer with the neck length you want and split the difference in case capacity between the x62 and 9,3x57. Or, just cut the neck on an x62 reamer back to your desired neck length. That would make the most sense, as if common sense ever enters into a wildcat design!

Rich
DRSS

a 2.1" version on the 375 ruger case will have 85 grains of water capacity or the same as the wsm line. loooooooow preasure at the velocity you want. do a 2.0" version and have 80 grains and still plenty of potential

Check out John Barsness and Charlie Sisk's 9.3BS.

2300 with 286 in a 9,3x57 is peace of cake with modern preassures, but an improoved version would be best, knowing your hot-rod pills never will be fired in an old rifle, and also give you a lower preassure.

Lets try and push our luck,
Is it too much to ask 9.3x54ms(improved,.440 shoulder dia.) for 2250-2300fps?

Still looks a convincing round with that FNS.

Or, do you really want to play with an 8x60S to begin with? I blundered into one of the 0.318 bore Sakos a couple of years ago, and after hassles over a bullet supply I am loading the round regularly. I can get 2600 fps out of the case with 200 grain Woodleighs and Normas, and the same with 196 grain RWS and S&B. No other bullets are currently available.

LLS

After much soul searching and reading of your post and the responses, I have come to the following conclusion: YES! you are M-A-D!! Doesn't make you a bad person, and you will likely find this forum a comfortable sanitarium to reside in.

Seriously, however, none of the cases you mention will fit in a shorter action than the standard length Mauser 98 and variants; so there is no advantage to chambering for one of them in lieu of the X62. Just load it down, the velocity range you look for will result in rather low pressures in the '06-sized case.

Rich
DRSS

OK , then the doctor aint lying. I really am ananas
Thats a real relief cause the uncertainty was driving me mad! so to speak
They say the truth will set you freeeeee!!!!

quote:

Originally posted by Woodjack:
What Im getting at is,If I needs only 2300fps, I can do it in smaller case than 9.3x62.

My own experience of 2 9.3x62 barrels is that with a 24" barrel 2,300fps is the practical limit for 286gr bullets and single base powder. Don't forget some people seem to think that the first sign of pressure is a near stuck bolt.

No need to do anything to an 8x60S except plant a 220 or 250gr woodleigh in it.