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Blackhawk Convertible - 357Mag/9mm

This is a discussion on Blackhawk Convertible - 357Mag/9mm within the Ruger Single Action forums, part of the Pistol & Revolver Forum category; I'm thinking of getting a single action revolver and am considering the 357Mag/9mm Blackhawk Convertible, mainly because it will allow me to use ammo I ...


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Old March 9th, 2013, 09:00 PM   #1
 
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Blackhawk Convertible - 357Mag/9mm

I'm thinking of getting a single action revolver and am considering the 357Mag/9mm Blackhawk Convertible, mainly because it will allow me to use ammo I already have a supply of ....

How is the accuracy of these guns when shooting 9mm compared to 357??

If I mainly shot 9mm with the gun, would it effect/harm the gun in the long-term (due to the 0.002" slop in the barrel?



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Old March 10th, 2013, 04:11 PM   #2
 
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I don't own a 357/9mm convertible, but my recollection of posts on other forums is that the 9mm accuracy is unsatisfying. Some of those posters blame the bullet diameter of the 9 while others accuse the long jump for the 9 from the cartridge to the cylinder throat.

I can't answer the most important question: "How bad is it?". Suggest you google for additional information on that question. And if you haven't already, you should define your expectations ... what accuracy are you comfortable with for this gun?

I have no informed opinion on possible accelerated wear due to undersize jacketed bullets.
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Old March 10th, 2013, 04:25 PM   #3
 
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I have one. At 25yrds 9mm ball was awful. However, at 10 yrds it would make "1 hole". I'm happy with it
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Old March 10th, 2013, 04:33 PM   #4
 
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A lot depends on the individual gun's tolerances. I have the Single Six convertible .22 magnum/.22LR, the Blackhawk in .357 magnum/9mm, and the Blackhawk in .45 Colt/.45 ACP. I also owned a Blackhawk convertible in 10mm/.38-40 that I sold recently. I also have an S&W 460XVR that will shoot .460 S&W magnum, .454 Casull, and .45 Colt.

It is hard to tell the difference in accuracy when shooting off-hand since they are more accurate than I am. From a bench rest, they are a little more accurate with the largest and longest round. The jump to the forcing cone is further which affects accuracy and if the bullet diameter is slightly smaller, it usually won't be quite as accurate by not completely sealing the bore and allowing gas past the bullet.

A friend has a Single Six convertible and he swears the .22LR is more accurate in his. Mine is the opposite.
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Old March 10th, 2013, 04:41 PM   #5
 
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I have a BH convertible 357/38/9mm with a 6.5 barrel. I’ve heard all the pro’s & con’s and decided to pick one up any way. I’m really satisfied with its accuracy shooting 9mm. I reload, worked up some good target 9mm loads and have no complaints. 2.5 inch groups at 20yards supported rest. Same with my BH convertible 45LC/45ACP, both are very accurate.
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Old March 11th, 2013, 03:57 AM   #6
 
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Quote:
Originally Posted by Ks Hayseed View Post
... I reload, worked up some good target 9mm loads and have no complaints. 2.5 inch groups at 20yards supported rest ...
Ks Hayseed
Are your reloads jacketed or cast? What diameter?

Last edited by pell; March 11th, 2013 at 05:07 AM.
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Old March 11th, 2013, 04:37 AM   #7
 
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The 9mm makes an acceptable plinking alternative load. At 10-15 yards it is as accurate as any other gun I own. I haven't shot it with the 9mm past that range. At 10 yards mine shoots a ragged hole though.
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Old March 11th, 2013, 05:13 AM   #8
 
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In theory 9 mm bullets are .355 and the magnum round is obviously 357. In practice I have found that lead 9 mm loads are slightly more accurate than jacketed 9 mm rounds in the 357 blackhawk due to { word for the day} better obduration the lead expanding more than the jacketed bullet to better fill the rifling. i have experienced teh same thing in my 45/45 blackhawk convertible.
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Old March 11th, 2013, 05:50 AM   #9
 
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Thanks for all the replies!!

To answer an earlier question, my reasons for wanting a Blackhawk are manily:

I've always wanted a "classic" looking revolover
I want to get one that will use ammo that's already in my safe (22LR, 9mm & 223/5.56).

Obviously I could go with a Bearcat or Single-Ten and share ammo with my 10/22's & SR22; but my thought was that by going with the Blackhawk 357/9mm convertible I'd be able to utilize my stock of 9mm and also be effectively adding 2 more rounds to my capabilites (357 & 38SP). Longterm I might even be thinking about a Marlin or Henry lever-action rifle that shares rounds with the single-action revolver I choose...
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Old March 11th, 2013, 06:03 AM   #10
 
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Quote:
Originally Posted by bwinters View Post
In theory 9 mm bullets are .355 and the magnum round is obviously 357. In practice I have found that lead 9 mm loads are slightly more accurate than jacketed 9 mm rounds in the 357 blackhawk due to { word for the day} better obduration the lead expanding more than the jacketed bullet to better fill the rifling. i have experienced teh same thing in my 45/45 blackhawk convertible.
In cast bullets, standard sizing for 9mm is .356, with commonly available optional sizing @ .355, .357, .358.

For 38/357, cast bullet standard sizing is .358, with commonly available optional sizing @ .357, .359, .360. (see, for example, pennbullets.com)

I agree that obduration plays a role, but your lead 9mm experience has also benefitted from a slightly larger size bullet compared to the jacketed 9mm. For your 45LC/45ACP, it's all obduration as the standard sizing for the cast 45LC and 45ACP is the same.
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Old March 11th, 2013, 06:53 AM   #11
 
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I have an old model .357 4 5/8 in. barrel with 9 mm cylinder and an old model .357 with a 6 1/2 in. barrel, the cylinder works equally well in both guns. I mostly shoot .357 mqg or 38 spl. in both of them as i reload both and have thousands on hand. When i have shot with the 9 mm cylinder i have found that the difference in point of aim was more of an issue than the lack of accuracy of the 9 mm bullet, i have chose to shoot .357 and .38 ammo in the revolvers and leave the 9 mm ammo for my 9 mm pistols.
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Old March 11th, 2013, 01:06 PM   #12
 
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Pell;
I’m using Rainer 115gr. FMJ’s They are copper plated lead bullets .355 dia. slightly concave base. Loaded with 5.0gr. VVN340 Muzzle velocity 1157fps. Good target load, no feed problems from EAA or Beretta 9mm. The 45 convertible, LC ‘s I use 200gr. RN/FP Oregon Trail Laser Cast silver bullet. Good comfortable accurate target bullet that won’t lead the barrel even at higher speeds. ACP I use Nosler 185gr. JHP They seem to work the best from my BH.
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Old March 11th, 2013, 01:35 PM   #13
 
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Ks Hayseed

Wow ... shooting 355s with good spreads @ your 357/9 would certainly make your gun a keeper. Most folks seem to lose @ the stacked tolerance lottery window, but you've walked away a winner.
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Old March 11th, 2013, 04:30 PM   #14
 
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I have good accuracy out of my 9mm cylinder, but I have to use jacketed rounds to get it. 357 Doesn't matter, either jacketed or lead is good accuracy.



However, I do prefer my 45acp/45 Colt for the pure fun factor
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Old March 11th, 2013, 05:13 PM   #15
 
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Id say the reduced accuracy is due to the longer jump the Bullet has to take from the Case Mouth to the Forcing Cone along with the difference in Ballistics between the 9mm, .38sp and .357mag
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