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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles
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Waidmannsheil
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: gryphon]
      #296832 - 11/03/17 09:18 PM

Agree Gryph, a lot of fuss over something which gives no more grief than a cartridge without a belt if the rifle is made properly. At our pre-season deer shoot as well as at the big-game rifle club friendly shoots where the ADA are invited there are plenty of guys having monumental jam-ups when under even a small amount of pressure. Many of the guns won't feed the second round properly, and some of these are CRF. Short stroking is a big problem as well and I often wonder how these guys go when they are in the bush. I just hope they never have to have a follow up shot on a deer, the poor thing would probably die of old age first. And shock horror, the majority are 30-06. Obviously it is not the cartridges fault but the operator and the fact that the guns is not functioning properly. Unfortunately a lot of hunters are tight arses and wont spend the money to have the gun sorted instead believing that all will be right, which of course it won't. I shoot most of these events with my 338 Win Mag and I can pour the rounds out without a single hiccup. The belt doesn't matter a shit. Does it need to be there ?. On most rounds no, but if it is there it doesn't make it crap, it just makes it a round with a belt. Making your gun feed properly with whatever cartridge you choose and practicing is more important than worrying about a belt. IMO.

Waidmannsheil.

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DarylS
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Waidmannsheil]
      #296843 - 12/03/17 04:44 AM

You're right - it matters not a whit that it has a belt.

I'd just not rather have a belt on a case that does not need one, is all.

If this case needs a belt - so be it - couldn't give a rat's ass one way or the other. I don't like the appearance of this new case so would never buy one - even if available here which is unlikely.

This is simply an oddly designed case for a modern round. Don't need it.

I have rimless rifle ctgs., one with a belt as well as rimmed case rifles. They all work perfectly, feed perfectly & shoot just fine.

The belt on many rounds is simply an advertising scam. It is not needed (but on a few ctgs.), but many people have sucked up the adverts that a belt is needed for strength on all so-called magnum rounds. Many these rounds have the same working pressure as a .220 Swift or .22-250 (.22 Varminter), 1930's rimless or semi-rimmed cases. Other rimless cases operating on the same pressures as the 'big BELTED magnums' are the 6mm Rem. and .270 Winchester, for example.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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gryphon
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: DarylS]
      #296852 - 12/03/17 07:58 AM

Yep as I said,I don`t dwell on that sort of stuff.

I saw three velvet stags,a hind and last years calf this morning all feeding together...did I think of the belts on the crackers lol? Nah!

I was more concerned with the wind swirling.

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Rule303
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: gryphon]
      #296858 - 12/03/17 10:19 AM

In my perverse way I see belts as a waste of additional powder space. Just think if the cartridge had the same base diameter as the belt and it went with slight tapper to the shoulder, more powder.

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DarylS
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Rule303]
      #296862 - 12/03/17 10:29 AM

Good one.

The only time I think about belts is when someone on this site says we dwell on belts too much. In other words, if it didn't come up on here, I wouldn't even think about them.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Ash
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: DarylS]
      #298181 - 31/03/17 12:01 AM

Anyone have a pic of this cartridge? I saw it elsewhere and it's sexy.

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DORLEAC
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Ash]
      #298190 - 31/03/17 05:47 AM

https://rws-munition.de/rws-jagd-bereich...-mag.html?cn=US

Best.

DORLEAC
www.dorleac-dorleac.com

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KennyCotman
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: mehulkamdar]
      #298191 - 31/03/17 06:42 AM

Hello, I'm new on the forum, not quite a greenhorn in the field.

About the new calibre,

I think its doomed to fail to exist,

here with us, we all hunt wild boar with 9,3 x 74, superior to the new round, and this isn't such a good round recording to the newer rounds.

For me personally the .375HH is my personal favorite together with the common 30-06.



grtz

Kenny

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paradox_
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: gryphon]
      #298207 - 31/03/17 01:31 PM

One word

WHY??

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Waidmannsheil
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: paradox_]
      #298210 - 31/03/17 03:07 PM

Two words

Why Not !!!

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Igorrock
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Waidmannsheil]
      #298222 - 31/03/17 10:39 PM

I don´t understand why you pondering so much this one caliber and it´s usefullness. At the same time one cartridge maker from USA releases whole family of new calibers. I don´t speak out if it is sensible or not but one new caliber which is very useable for example those Swiss hunters is IMO a positive thing. It´s parent case is very common .375 H&H so making these ammos is quite easy and probaly quite cheap too.

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NitroXAdministrator
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: paradox_]
      #298224 - 31/03/17 10:43 PM

Quote:

One word

WHY??



Ignoring what I may have said earlier, pro or con, I think it will do well ... int he Swiss Provinces where a 10.3mm calibre is required by law. Instead of some ancient BP designed round, hunters will be able to purchase a round with better ballistics. Lighter bullets for chamois and deer and the like.

Plus useful for hunting large and dangerous game in Africa, driven game in Europe etc.

Edited: Igorrock posted in between me opening the thread and posting. I see he said similar things re the Swiss.

But why do we ponder this cartridge?

This is a discussion forum and that is what is done on a discussion forum. Personally I am interested in this cartridge and its ballistics. And how well it might work.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

Edited by NitroX (31/03/17 10:49 PM)

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Igorrock
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: NitroX]
      #298234 - 01/04/17 02:51 AM

Yes, discussion about the spoken caliber itself and it´s features is in my interests too. It would be interesting to compare it´s ballistics to other calibers with same bullet diameter. I like especially case lenght because it doesn´t need any magnum action.

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http://promaakari.wordpress.com/

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Waidmannsheil
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Igorrock]
      #298243 - 01/04/17 11:09 AM

Not sure why so many people, not just on this forum but on many others as well, including German ones, are so keen for this cartridge to fail. If a manufacturer brings out another different cartridge then great, it's another choice and something for us all to talk about. I generally have no interest in many of the new cartridges preferring the classics but if others want to buy them, good on them. All those classic cartridges that we love came out within about a 25 year time frame of each other, many of them within about 5 years, so does that make them shit because they were developed close together. No it doesn't. That 10.3x68 has many classic features about it anyway. 68mm length, 10.3 projectile and a 0.532" head size (From the 375 H&H,the most classic of them all) I hope it does well, it would be great to see one in the new M98 Mauser. I the bullets are a 0.416" then I will seriously consider building a rifle with that cartridge for our Sambar deer, it would be fantastic.

Waidmannsheil.

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rigbymauser
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Waidmannsheil]
      #298260 - 01/04/17 10:08 PM

Welcome the new-kid-on-the-block. Looks interesting. Any rifleman should never look away from the perspective on a new caliber. Just more fun added as I see it.

Edited by rigbymauser (01/04/17 10:08 PM)

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Waidmannsheil
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: gryphon]
      #321444 - 11/11/18 01:17 PM

Just in case anybody wanted to know, the bullet diameter is 10.51mm or 0.414", that information is from RWS themselves although the CIP drawing show the groove diameter for the barrel to be 10.49mm or 0.413".

Matt.

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lancaster
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Waidmannsheil]
      #321454 - 12/11/18 12:46 AM

support 10,75x68

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Rell
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: lancaster]
      #321457 - 12/11/18 01:59 AM

If we want it to fail, I just wave to buy one.

I have a 9.x 66 Sako, a 338 Federal and a 300 RSAUM.

I do like the idea though. Seems like a cool cartridge.

--------------------
450-400, 9.3x74r and 7x65r.

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Dr_Deer
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: DORLEAC]
      #321462 - 12/11/18 07:17 AM

Quote:

https://rws-munition.de/rws-jagd-bereich...-mag.html?cn=US

Best.

DORLEAC
www.dorleac-dorleac.com



If you look at the ammo available everything can be put in to context with the Swiss hunting laws - light for caliber lead free bullets for local game where something bigger than 10.3mm is required but a .416/.404/.458 is overkill, and a 25,9g /399grain bonded lead at 2330fps for the rare trip to Africa. The ideal one rifle for the well to do Swiss hunter.

Blaser has made barrels in both 7.5x55 and 10.3x60R almost exclusively for the Swiss market for as long as I’ve been looking at their catalogues, the market has to be large enough to make it worthwhile.

As for the belt, given it will be fed from a plastic semi spiral Blaser R8 mag, and the cartridges probably won’t get reloaded, who is going to care? The R93 & R8 will also feed rebated rim cartridges without hiccups under the time pressure of BGRC shoots whilst CZ550 owners are often busy clearing jams and failing to get their shots of in time!

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Ash
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Dr_Deer]
      #321467 - 12/11/18 12:01 PM

I like rifles to have the same maker as the cartridge (not that I could ever afford a 375 H&H in that case!), but for the ones that it’s doable I intend to strive for such. Example - if I wanted an RWS rifle I’d get a 10.3x68 RWS, if I wanted a blaser (and I do!) I’d get a .45 Blaser (it’s on my want list).

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Dr_Deer
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Ash]
      #321502 - 13/11/18 06:28 AM

AFAIK mialls imported 3 R93 .45 Blaser barrels so you might be left searching egun.de.

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NitroXAdministrator
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: Dr_Deer]
      #337524 - 06/02/20 06:09 PM

If only they named it the 10.3 Creedmoor, or .414 Creedmoor, they would have the whole USA market.

Just troublemaking.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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NitroXAdministrator
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: NitroX]
      #337595 - 07/02/20 05:31 PM

A 10.5x68 or .416/68mm on the 8x68S case if it is wide enough, would make a dandy all round rifle. Much smarter than a 10.3 mm oddball.

And a true 10.75x68 (on a 8x68S case).

The .404 Jeffery does this job largely anyway for 10.75.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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DarylS
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: NitroX]
      #337647 - 08/02/20 05:52 AM

With a nominal .478" shoulder, the 8x68S case could make up a .416 quite easily. Not a huge shoulder, but certainly enough.
This ctg. should duplicate the .416Rem.'s ballistics, in a rimless ctg.
The shoulder would be approximately, .005" smaller than the .416Rem., but would of course have a larger diameter base.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Homer
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Re: New RWS Big Bore Caliber: 10.3x68 [Re: DarylS]
      #337702 - 09/02/20 11:24 AM

G'Day Fella's,

Thanks for sharing Mehul.

I just assumed, that the 10.3 mm was the Bore Diameter, not the Groove and Bullet Diameter?
That being the case 10.3 x 0.039375 ("/Inch), = 0.400" Bore Diameter (1 mm = 0.039375"/Inch).
So generally, rifling is around 0.004" (or just over 0.01 mm), each side (x 2, for 0.008"), this would give this a barrel Groove and Bullet Diameter, of 0.408" ish?

The thing that the bloke being interviewed said, was that he started with the .416 Remington Magnum cartridge ......... so who knows?

Either way .......... Everything that is Old, is New Again!

Avagreatweekendeh!
Homer

--------------------
"Beware the Lolly Pop of Mediocrity,
Lick it Once and You Will Suck Forever"

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