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Old 08-12-2013, 19:13   #1
Crosseyed Shooter
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Ruger 10mm

I went to Gander Mtn. yesterday and was shocked to see a Ruger "Buckeye" Blackhawk Conv. chambered in 38-40 and 10mm in their used case. It looked like it had never been shot. Now it is in the safe and I am looking forward to my next range outing.
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Old 08-12-2013, 19:27   #2
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You dog.

Out of pure coincidence I just mentioned one in Caliber Corner for an experiment.

I'd love to find one.
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Old 08-12-2013, 20:12   #3
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Congrats!


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Old 08-13-2013, 06:48   #4
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I wish I could run into one of those.
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Old 08-13-2013, 09:12   #5
Crosseyed Shooter
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I was so excited to find it and my wife could not understand what the big deal was. Hopefully I will get to shoot it tomorrow!

Last edited by Crosseyed Shooter; 08-13-2013 at 09:13..
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Old 08-13-2013, 10:06   #6
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I got one like new, unfired and unturned, some time ago. I bought it initially as a collector, but that didn't last long. Shot the hell out of it with 10mm for a while, then got into the .38-40's. I rarely shoot 10's out of it now, other than testing loads for the auto. The .38-40 is just plain ridiculous, if you get out of the box (and away from the book). It will push the same bullets at nearly 2X the bullet energy, compared to the 10mm. My current handgun hunting load with it is a 155 gr. Barnes at (well) over 1800 FPS, and dead-nuts accurate as an iron sight hand gun can be, 100 yds and beyond. Original pressure loads with the same bullet only do about 1250 FPS from a 24" rifle, and are only as accurate. This pistol is a real sleeper, and the 10mm revolver is boring in comparison.
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Old 08-13-2013, 18:22   #7
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Here is a pic to add value to this thread
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The 10 Ring - Click for larger version  
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Old 08-13-2013, 18:24   #8
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Wow. Congrats.
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Old 08-14-2013, 07:01   #9
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Quote:
Originally Posted by dm1906 View Post
The .38-40 is just plain ridiculous, if you get out of the box (and away from the book). It will push the same bullets at nearly 2X the bullet energy, compared to the 10mm. My current handgun hunting load with it is a 155 gr. Barnes at (well) over 1800 FPS,
So tell us about the 38-40. For that much increase in performance, the case capacity must be much more than
10mm. So I guess you are filling up the cases with slower
powders and shooting at 10mm pressures. Is that about right ?
What is the capacity of the 38-40 case compared to 10mm ?
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Old 08-14-2013, 09:09   #10
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Originally Posted by preventec47 View Post
So tell us about the 38-40. For that much increase in performance, the case capacity must be much more than
10mm. So I guess you are filling up the cases with slower
powders and shooting at 10mm pressures. Is that about right ?
What is the capacity of the 38-40 case compared to 10mm ?
The .38-40 is a necked-down .44-40 case, so it's BIG. I use resized .44 Mag cases for the full nuke rounds I shoot. I have a bunch of Starline .38-40, which are MUCH improved over the original type cases, but still less than .44M cases. I load the full power loads in the Starline brass, but do most of the development and testing in the .44M cases, until I can estimate the pressures. The original brass is quite weak, designed for only 14K PSI, but Starline case head, web and lower case wall are the same as their .44 Mag. The case web of the original has the primer pocket protruding a full .125" into the case (it's not taller, there's just that much less case web thickness around it). Great care MUST be taken to ensure the loads NEVER get chambered into a Colt revolver, clones, and most original rifles. The Blackhawk easily takes it in stride, but this round will ABSOLUTELY scatter a colt revolver. Pressures and spikes are no more than warm .44 Mag. The recipe I'm using is a "perfect storm", so to speak. I had to venture WELL outside my comfort zone to get the first sign of significant pressure, and that yielded north of 2,000 FPS with the 155 gr. Barnes bullet.

Yeah, the .38-40 case has a greater volume. Almost exactly 50% more. 25.3 vs. 37.8 grs. water (confirmed). This does allow taking advantage of much greater volumes of much slower powders.

Here's a pic of the .38-40 loaded with the 155 gr. Barnes, next to a 10mm loaded with the 180 gr. XTP, and bare bullets for comparison:
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The 10 Ring - Click for larger version  
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Old 08-14-2013, 17:04   #11
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Damn, I thought by the title of the thread Ruger had announced a 10mm in their SR line. A freight has one of the Rugers with a 10mm cylinder and really likes the combination.
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Old 08-14-2013, 19:42   #12
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I'd love to have one of those as well, but like bush, I thought they might be chambering it in a new pistol. Ruger's latest offerings don't really excite me that much (plain striker-fired guns with nothing really special), but a possible 10mm did perk my ears up.
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Old 08-18-2013, 11:44   #13
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Got a chance to shoot the "Buckeye" the other day. Accuracy was great and it handled all loads without any problems. I shot Remington, Georgia Arms, 2 Underwood loads, and 2 flavors of my own recipe. I shot a 6 inch round steel target at 120 yards on the first shot, missed the second, and hit again on the third. I was proud and thought 2 out of 3 ain't bad with steel sights at that distance.
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Old 08-18-2013, 16:29   #14
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disappointed

I also jumped to check on the mention of a Ruger 10mm! As a long time fan of Ruger handguns I still am dreaming of a 10mm Ruger! I guess I'll have to wait a while longer.
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Old 08-18-2013, 22:00   #15
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Quote:
Originally Posted by dm1906 View Post
I use resized .44 Mag cases for the full nuke rounds I shoot.
Do you have a die to convert the .44 magnum cases to .38/40?
Do you have to cut the cases down?


Quote:
Originally Posted by Crosseyed Shooter View Post
Got a chance to shoot the "Buckeye" the other day. Accuracy was great and it handled all loads without any problems. I shot Remington, Georgia Arms, 2 Underwood loads, and 2 flavors of my own recipe. I shot a 6 inch round steel target at 120 yards on the first shot, missed the second, and hit again on the third. I was proud and thought 2 out of 3 ain't bad with steel sights at that distance.
I assume that this was all done with 10mm. Correct?

I want a Buckeye Ruger like yours, because .38/40 sounds like such a cool round (and I'm already hooked on 10mm).
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Old 08-19-2013, 10:21   #16
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Yes, all I have shot is 10MM.

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Old 08-19-2013, 13:00   #17
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Quote:
Originally Posted by Crosseyed Shooter View Post
Yes, all I have shot is 10MM.
I'm not sure if you reload or not, but .38/40 strikes me as more of a reloaders cartridge.

Every time I get a gun chambered in a new cartridge, its time to pony up for new dies, and brass. OUCH. You get the double whammy with the Buckeye conversion cylinder.
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Old 08-19-2013, 14:19   #18
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I do reload. Now that I have the 38-40 cylinder I have been looking at that round as well. I found starline brass and it is pricey.
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Old 08-19-2013, 15:19   #19
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Quote:
Originally Posted by Crosseyed Shooter View Post
I do reload. Now that I have the 38-40 cylinder I have been looking at that round as well. I found starline brass and it is pricey.
I'm surprised. It looks like it is about twice the price of normal brass.

https://www.starlinebrass.com/order-...oy-vintage.cfm

Still, it sounds like a very cool cartridge. It strikes me as sort of forerunner to modern high velocity cartridges.
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Old 08-21-2013, 08:50   #20
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Quote:
Originally Posted by MinervaDoe View Post
Do you have a die to convert the .44 magnum cases to .38/40?
Do you have to cut the cases down?.......
Resizing these is really no big deal, as I do this with a dozen other calibers, mostly high power rifle. No special dies. I use the .38-40 sizing die, 2 pass (Royal sizing wax, short stroke, relube, full stroke). The new R-P brass I'm using does very well and I've not had any issues, yet. 1+ fired brass is a bit tough into the die, so I don't use them. I have to turn the necks down about .003" for cast, and .002" for jacketed, to fit them to the chamber. They start out about .009" short, but fire-forming brings them right to trim length, and they resize perfectly. I DO NOT use first round brass for full power loads, as the case MUST be fire-formed. I haven't had any split yet (I expected at least some), and will anneal them if I see any, but it doesn't appear necessary at this point. I've reloaded many of them 4-5 times with no problems.
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