Give me your thoughts on this.

[Doesniper]

The Wyoming wind has me inside today, so my thoughts are on a new magnum. I have a mauser with a magnum bolt face and was thinking of something in 9.3 mm. Here is my idea; 350 Rem Mag. case opened to 9.3 mm, the case body opened to a min. taper, and ashoulder angle of 35 degrees. I'm thinking it would be capable of 2700+ fps with a 250 grain bullet and very efficient. There would be plenty of room to load a longer bullet and seat the bullet to what ever the rifle likes. What do you think?

[Mikey]

Doesniper - that sounds like a pretty interesting project.  One might think a heavier bullet, like the 250 - 260 gn 9.3mm bullet, should have good wind bucking capability.

What distances do you shoot and what caliber/slug??  I ask because different calibers and bullet weights give, or seem to give better long range 'carry' with less drift.  Two examples are the 140 gn  and 155-60 gn 6.5 slugs.  Others are the 173-180 gn 308 slugs.  There are others.  How does the 9.3 rate for longer ranges.  Mikey.

[RaySendero]

The Wyoming wind has me inside today, so my thoughts are on a new magnum. I have a mauser with a magnum bolt face and was thinking of something in 9.3 mm. Here is my idea; 350 Rem Mag. case opened to 9.3 mm, the case body opened to a min. taper, and ashoulder angle of 35 degrees. I'm thinking it would be capable of 2700+ fps with a 250 grain bullet and very efficient. There would be plenty of room to load a longer bullet and seat the bullet to what ever the rifle likes. What do you think?

sniper,

I like it - But.... always think when you put a new engine in a hot rod you should put the BIGGEST that will fit!  So what is the max length your receiver/magazine will handle?  And what else have your considered?

I have a 9.3x62 that I reload with 286 NPTs.  Still I find myself longing to build another rifle in .416!

[Graybeard]

It's already been done by John Barness and Sisk they call it the 9,3 BS for Barness-Sisk not the normal BS althou I suspect that was a bit of an intended humor there. Barness has written an article on it in the Wolfe publications and mentions it from time to time in his articles the latest being his piece on Medium Mediums in either Handloader or Rifle I don't recall which.

[deltecs]

Sounds to me like you'll duplicate the ballistics of the 9.3x62 Mauser.  The case capacity of a 9.3x62 and the .350 Rem Mag are nearly identical, so ballistics would be comparable.  Now if you removed the belt and used something like the .300 Win or Rem short mags or .338 ruger short mag for the base case you'd get a larger case capacity and more velocity.  But then why go through the process, just buy the 9.3x64 cases already head stamped with a length designed for standard actions.  This round will push a 250 grain bullet to 2700fps.  Admittedly the base diameter is not as large as the magnum bolt face.  What about using the .333 rimless nitro as the base case.  It does have a base diameter just a bit larger so the bolt face would need to be opened a bit, but it already has a .5 neck length in a case that is less than 2.5".  Increasing the bore diameter would make the case have a longer neck yet if increased to 9.3.  That is plenty of length for whatever weight bullet without seating into the powder column.  The case capacity is the same as the .338 Win Mag or the 9.3x64 and .333 brass is obtainable.

[Doesniper]

I already have a 375 H&H and a 300 Win Mag. and was going to build a classic looking hunting rifle in 9.3 X 62. The Mauser action I have is a 98 with a Mag bolt face, standard length. I thought about going into the 416 to 458 neighborhood but decided on doing a wildcat of a different breed.
I was thinking it would be a replacement for my .375 as an elk rifle. As far as the distance I shoot? I have never shot any big game farther than 300 yrds.
GB
Do you have any idea about where I could get info about the 9.3 BS?

[deltecs]

I already have a 375 H&H and a 300 Win Mag. and was going to build a classic looking hunting rifle in 9.3 X 62. The Mauser action I have is a 98 with a Mag bolt face, standard length. I thought about going into the 416 to 458 neighborhood but decided on doing a wildcat of a different breed.
I was thinking it would be a replacement for my .375 as an elk rifle. As far as the distance I shoot? I have never shot any big game farther than 300 yrds.
GB
Do you have any idea about where I could get info about the 9.3 BS?

If you are looking into the .416-.458 neighborhood, look at Dakota's 404.  This case is designed to be used in standard length actions and has some intrigue to me for African DG.   If you are looking for something in a smaller bore, look at the .330 Dakota.  This round would fill out in between the .300 Win Mag and the .375 with plenty of steam to tackle elk out to 400 yds.  You can always download it a bit too.  Barnes #3 has the .330 Dakota at around 2700 fps for a max load in the 250 gr bullet.  Just your requirements with higher sectional density and BC.

[Doesniper]

One consideration I take is, if the cartridge is effcient. If I can get the same velocity with less powder, I have the right combination. I have not been very impressed with the Dakota rounds for this reason. If I go .416, I'll go with the Taylor. I just have a craving for the 9.3.

[deltecs]

I have the utmost respect for both bores in usual rounds.  No argument from me, just suggestions based on your requirements.

[Graybeard]

GB
Do you have any idea about where I could get info about the 9.3 BS?

Contact Wolfe Publishing and ask them for a copy of the magazine with John Barness' article on it. There maybe a bit of data on it in the recent article. Just a moment and I'll go check as I know where that one is.

Yup he lists a few loads in the Dec-Jan 2008 issue #250 of Handloader magazine on page 65. He had a full article on it this year I think it was. You should be able to contact Wolfe and get them to send you one or both issues. I'm not sure which the other was. You might also be able to contact John Barness there or perhaps thru The 24 Hour Campfire as I think he posts over there at least from time to time. I'm sure he could provide you data. He and his wife sell their books thru the Wolfe publications and I think there is contact info for them in those as well.

There is indeed. His website is www.riflesandrecipes.com further contact info listed is:

Deep Creek Press
PO Box 579
Townsend, MT 59644

[nomosendero]

It's already been done by John Barness and Sisk they call it the 9,3 BS for Barness-Sisk not the normal BS althou I suspect that was a bit of an intended humor there. Barness has written an article on it in the Wolfe publications and mentions it from time to time in his articles the latest being his piece on Medium Mediums in either Handloader or Rifle I don't recall which.

Yea, I read that article a week or so ago. I read this thread & thought WOW, how bout that!!