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CJF
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Reged: 07/08/17
Posts: 309
Loc: United States
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: 85lc]
      #388765 - 10/01/25 12:23 PM

Hi Roy,

I'm circling back on this project to say I've spent a couple of hours resizing RWS brass to fit my double's tight chambers, using scotch tape, as discussed above. Once I had that done, I neck sized using 357 Mag dies and then belled the mouth slightly to accept 200grn Hornady jacketed soft points (as you suggested.) If the weather holds off tomorrow morning, I'll sneak up to the range and try the 10 rounds I loaded using IMR 4895. Fingers crossed.

A 38-55 trim die was suggested as a possible way to compress the case body without messing with tape. I bought a LEE trim die for this reason, but couldn't measure any compression of the case dimensions when using it. So a lot of time practicing grade school craft skills with tape.

Will let you know how it goes.

Chris


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85lc
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Reged: 19/01/18
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Loc: Georgia, USA
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #388777 - 11/01/25 05:47 AM

Chris,

That is wonderful, great news!!! Best success in shooting your rifle. Hopefully the weather is better where you are than here as we have snow and freezing rain predicted.

I hope the barrels regulate with your load. Please post how it works.

I have not used IMR 4895 so would be interested in how it shoots. I use IMR 4198 in kipplauf which is a 9.1x72 (I earlier called it a 9x72 but the barrel is martked 9.1. I shoot 0.359" lead bullets in it).

If you have a chron (or have access to one), please advise velocity. I believe factory 9.3x72 is rates at 2100 fps. I thought a 1900 to 2000 fps would be agood target but would be interested in what you and others get in similar cartridges.

On a separate subject, I made a model of the rear Triebel scope mounts for my O/U Sempert & Krieghoff and have asked Bill Schwarz to machine a blank mount into a working mount. If that works, he may be able to make scope mounts for you. I will let you know how that works. Bill was slammed with projects when I asked him to help so it may be awhile.

--------------------
RB


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85lc
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: 85lc]
      #388778 - 11/01/25 05:54 AM

Chris, just another comment. I think the caliber of mid-bore double rifles like your double rifle are great. The 9.3X72 and its brothers (9x70, 9.1x72 etc) are great for deer and hogs hunting. They are easy to handle and lively.

You have put in a lot of effort to make ammunition and glad to see your hard work paying off.

--------------------
RB


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CJF
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: 85lc]
      #388848 - 13/01/25 08:44 AM

Roy,

The 4895 loads were not impressive. Velocity was below 2,000fps and varied significantly between the right and left barrels. I've done a deep cleaning with what I had at home, but am still was getting dirty patches after a lot of elbow grease and Hoppes No9, so I've ordered a non-ammonia copper remover and will try that.

I'll probably shoot the new loads before I cast both bores to see if the right barrel, which had lower velocity on each pair, is more worn than the left, or if the velocity was due to greater fouling.

My next loads will use 4198 and the 200gr Hornady JSPs. Based on loaddata.com I will start at 32.5grns. Those are ready and waiting a free window of time to get to the range (and weather that doesn't suck.)

Chris



Edited by CJF (14/01/25 03:34 AM)


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CJF
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Reged: 07/08/17
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Loc: United States
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: 85lc]
      #388873 - 14/01/25 04:09 AM

Quote:

...I think the caliber of mid-bore double rifles like your double rifle are great. The 9.3X72 and its brothers (9x70, 9.1x72 etc) are great for deer and hogs hunting. They are easy to handle and lively...




I couldn't agree more. I love my 450 and 500BPE doubles, but they are not as much fun to carry day after day, and the 360s are enough to do what I need to do! I haven't yet tried hunting with my 450/400, but that should be as nimble as the 360s (360 2.25" and 9.3x72r), since it's a black powder gun in the shorter 2 7/8" variation.

Chris


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sharps4590
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #388904 - 15/01/25 09:52 AM

In older doubles a lower velocity from the right barrel is not uncommon. I have 4 doubles and have had more, ranging from 500 BPE, 11.15 X 60R, 8 X 65R Brenneke, 8 X 60R Magnum and a 56 cal. muzzleloader.

--------------------
Jesus said, "I am the way the truth and the life. No one comes to the Father but through me." John14:6


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CJF
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: sharps4590]
      #388907 - 15/01/25 12:40 PM

Thanks Sharps. I just recently got the Garmin chronograph and haven’t tested any of my other doubles, Besides a 500bpe by Dickson that is in virtually unused condition

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CJF
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #389614 - 14/02/25 02:49 AM

Tried 200gr Hornady JSP bullets and 4198, without filler, using magnum rifle primers. Results were very good accuracy from the left barrel (clover leaf, at POA), and OK results from the right barrel, ~2" to the right, with shots in 1.5" group at 30yds. Velocity averaged 1969fps, but with significant variation.

Accuracy results with 180gr Remington JHP bullets were very similar to the 200gr Hornady JSPs, but not as good. Strangely, the variation shot to shot in velocity was much smaller than with the 200gr bullets (powder and primer were the same for both.)

Very happy with the results I got deep cleaning the bores with Wipe-Out foam. Tremendous improvement over elbow grease and Hoppes. I think a further round with Wipe-Out may actually have these bores shining.

One fun fact that many of you with German doubles already know -- don't set the rear trigger before touching off the front trigger as the gun will double on you. Thankfully this wasn't a heavy recoiling round.

Next step is to try filler. I have both natural kapok fiber and vegetable-based packing peanut foam available. Will go with the kapok first, based on what I was reading from both Sherman Bell and Graeme Wright.

Will also try increasing the load slightly as the barrels are not crossing and there is 2-3" between left and right impacts. Factory ammo is at 640 meters/sec or 2100 fps, and I'm still 130fps below that, so hopefully more velocity will bring the right and left closer.

https://www.sellier-bellot.cz/en/products/rifle-ammunition/rifle-ammunition-sp/detail/240/

Edited by CJF (14/02/25 12:07 PM)


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CJF
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Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #389713 - 16/02/25 05:37 AM

Some pics from the last range session









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93x64mm
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Reged: 07/12/11
Posts: 4254
Loc: Nth QLD Australia
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #389715 - 16/02/25 07:03 AM

Not that is one nice piece of kit indeed CJF!
I suppose the scope has long been missing?


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CJF
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Reged: 07/08/17
Posts: 309
Loc: United States
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: 93x64mm]
      #389716 - 16/02/25 07:21 AM

Correct. No scope. But I have been able to buy a set of Triebel scope mounts. The rear mount on the Triebel system is the one that is different (the front is similar to other claw mounts). The spring-loaded plate that locks the claws in place is mounted on the mount itself and not the barrels as in other systems. That always sense to me, since it would be easier to repair or replace if part of the scope vs part of the barrel rib.

I plan on fitting those mounts to my rifle if a detailed examination shows the width of the claws will work. (FYI, the bottom picture has my 8x57r Merkel in it, as that was also retailed by Weisgerber)












Edited by CJF (16/02/25 07:24 AM)


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85lc
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Reged: 19/01/18
Posts: 1101
Loc: Georgia, USA
Re: Pre WW1 German double rifle retailed by Weisgerber [Re: CJF]
      #389724 - 16/02/25 10:43 AM

Chris,

That is fantastic that you were able to find a set of Triebel scope mounts. That is somewhat like finding hen's teeth. Those will be great on your rifle.

Again, congrats.

--------------------
RB


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