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Haenel Aydt 8.15X46R (Read 1195 times)

j_c_johnson Full Member Offline C C Johnson's grandson Posts: 129 Location: northeast Indiana Joined: Sep 16^th, 2004	Haenel Aydt 8.15X46R Apr 25^th, 2025 at 6:45pm	Print Post
	I had a fellow ask if his Aydt with a trash bore could be refined to .22 Hotnet. I told him I don't think that is a good idea. What say you?


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oneatatime Frequent Elocutionist Offline Posts: 4058 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: Haenel Aydt 8.15X46R Reply #1 - Apr 26^th, 2025 at 4:09pm	Print Post
	I had one that was rebarreled with a 22 barrel and chambered for 22 K-Hornet with the rim on the barrel face. No problems shooting GI ammo to reform brass and reloading with cast bullets.


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sharps4590 Full Member Offline Posts: 101 Joined: Mar 24^th, 2016	Re: Haenel Aydt 8.15X46R Reply #2 - Apr 29^th, 2025 at 5:18pm	Print Post
	I agree with you J C. and here's why. According to Axel Eichendorf the 8.15 X 46R, which I assume your friends Haenel/Aydt is chambered for, has a max operating pressure of 1650 BAR, which converts to 23,931 PSI. The early Hornet was operating at 43,000 CUP which converts to 42,000. I've had two Haenel/Aydts and kept the best. Both were the first version/model and it isn't a particularly strong action, IMO. ASSRA published an article I wrote some few years ago on the 8.15 X 46R. My test rifle for that article was a Fredrick Jacob Bartles single shot on an Ideal action.


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oneatatime Frequent Elocutionist Offline Posts: 4058 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: Haenel Aydt 8.15X46R Reply #3 - Apr 29^th, 2025 at 7:30pm	Print Post
	With a full diameter new steel barrel I can't imagine hoop strength would be a problem with the Hornet (look at the diameter of the barrel on a WWII Hornet survival rifle) and someone here could compute for us the back thrust with the Hornet case at 42k vs the 8.15x46R at 24K. Double loading an 8.15x46R is a very different matter.


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sharps4590 Full Member Offline Posts: 101 Joined: Mar 24^th, 2016	Re: Haenel Aydt 8.15X46R Reply #4 - Apr 30^th, 2025 at 1:08pm	Print Post
	The question was about relining, not a new barrel. If the rifle is a first version/model/iteration Haenel/Aydt there is nothing supporting the breech block. It just pivots into place and is locked with the latch. I couldn't find any numbers on what that action is proofed for but I wouldn't feel comfortable recommending relining one to a cartridge with an almost 20 KPSI higher operating pressure. However, I've done things some folks thought a little risky but, I had the numbers in my favor. If the numbers work, it would be a fun rifle. Were it me I believe I'd consider relining it to 32-40 or, if it is 8.15 X 46R, back to its original cartridge.


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rkba2nd Frequent Elocutionist Offline Posts: 2010 Location: earth Joined: Feb 16^th, 2009	Re: Haenel Aydt 8.15X46R Reply #5 - Apr 30^th, 2025 at 1:25pm	Print Post
	Smart move, stick to pressure it was designed for.

	rkba2nd
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yamoon Oldtimer Online NRA Life, ASSRA , GGCA, MCA Posts: 951 Location: Junction City Kansas Joined: Feb 11^th, 2012	Re: Haenel Aydt 8.15X46R Reply #6 - Apr 30^th, 2025 at 8:07pm	Print Post
	I saw an Aydt chambered for 219 zipper for sale on the internet, looks like a time bomb to me. It was on Guns International. I always considered an Aydt about as strong as a Stevens 44. Mike
	« Last Edit: Apr 30^th, 2025 at 8:21pm by yamoon »

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oneatatime Frequent Elocutionist Offline Posts: 4058 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: Haenel Aydt 8.15X46R Reply #7 - May 1^st, 2025 at 12:16pm	Print Post
	I would agree with the no 219 Zipper just on general principals and the even higher pressures some of the 22 large case varmit cartridges were loaded. I wonder if anyone has ever seen any 8.15x46R rifle that was rechambered to 32 Win Special as I believe was fairly common after the war? I must say that the Aydt that I had rebarreled to K-Hornet had been "blown up" by a previous owner's load in the original 8.15x46R. The threaded part of the receiver survived just fine. The barrel ahead of the receiver was bulged and the sides of the receiver were cracked. The retaining pin for the block was unharmed. I had the receiver walls welded expertly and the shortened barrel lives on as an 8.15x46R on a 71 Mauser. All this happened around 50 years ago so I can't be more explicit. Oh, and my first K-Hornet, 60 years ago, was a low wall Winchester that the previous owner and myself had no problems with.


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sharps4590 Full Member Offline Posts: 101 Joined: Mar 24^th, 2016	Re: Haenel Aydt 8.15X46R Reply #8 - May 1^st, 2025 at 12:53pm	Print Post
	I haven't seen one rechambered to 32-40. The two cartridges are so similar was the reason I mentioned it. Honestly, beyond that I'm quite ignorant of the 32-40. I understand it was Harry Pope's favorite cartridge, if I understand correctly.


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yamoon Oldtimer Online NRA Life, ASSRA , GGCA, MCA Posts: 951 Location: Junction City Kansas Joined: Feb 11^th, 2012	Re: Haenel Aydt 8.15X46R Reply #9 - May 1^st, 2025 at 3:49pm	Print Post
	oneatatime wrote on May 1^st, 2025 at 12:16pm: I would agree with the no 219 Zipper just on general principals and the even higher pressures some of the 22 large case varmit cartridges were loaded. I wonder if anyone has ever seen any 8.15x46R rifle that was rechambered to 32 Win Special as I believe was fairly common after the war? I must say that the Aydt that I had rebarreled to K-Hornet had been "blown up" by a previous owner's load in the original 8.15x46R. The threaded part of the receiver survived just fine. The barrel ahead of the receiver was bulged and the sides of the receiver were cracked. The retaining pin for the block was unharmed. I had the receiver walls welded expertly and the shortened barrel lives on as an 8.15x46R on a 71 Mauser. All this happened around 50 years ago so I can't be more explicit. Oh, and my first K-Hornet, 60 years ago, was a low wall Winchester that the previous owner and myself had no problems with. I have a martini action German Schuetzen chambered for 32 Winchester Spcl, I only shoot light cast loads in it. Mike


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 16884 Location: Oregon Joined: Feb 2^nd, 2009	Re: Haenel Aydt 8.15X46R Reply #10 - May 3^rd, 2025 at 11:33am	Print Post
	sharps4590 wrote on May 1^st, 2025 at 12:53pm: I haven't seen one rechambered to 32-40. The two cartridges are so similar was the reason I mentioned it. Honestly, beyond that I'm quite ignorant of the 32-40. I understand it was Harry Pope's favorite cartridge, if I understand correctly. Rechambering an Aydt to .32-40 with the original groove diameter could be an issue. Most 8.15x46R use a smaller bullet diameter, so shooting the wrong .32-40 ammo (if it's old factory ammo) could result in pretty high pressures.

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yamoon Oldtimer Online NRA Life, ASSRA , GGCA, MCA Posts: 951 Location: Junction City Kansas Joined: Feb 11^th, 2012	Re: Haenel Aydt 8.15X46R Reply #11 - May 3^rd, 2025 at 4:31pm	Print Post
	marlinguy wrote on May 3^rd, 2025 at 11:33am: sharps4590 wrote on May 1^st, 2025 at 12:53pm: I haven't seen one rechambered to 32-40. The two cartridges are so similar was the reason I mentioned it. Honestly, beyond that I'm quite ignorant of the 32-40. I understand it was Harry Pope's favorite cartridge, if I understand correctly. Correct I have 8.15x46r rifles that range from .311 to .318 groove diameter. Mike Rechambering an Aydt to .32-40 with the original groove diameter could be an issue. Most 8.15x46R use a smaller bullet diameter, so shooting the wrong .32-40 ammo (if it's old factory ammo) could result in pretty high pressures.


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sharps4590 Full Member Offline Posts: 101 Joined: Mar 24^th, 2016	Re: Haenel Aydt 8.15X46R Reply #12 - May 3^rd, 2025 at 5:30pm	Print Post
	That's right. I was thinking performance and case size. The 32-40 is .320 - .321 groove.


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