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Old July 17, 2006, 06:24 PM   #1
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Magnum primers

I just ordered a .44 mag (ruger superblackhawk). As soon as it gets here (not to mention the new dies), I plan to start doing some reloading for it. The higher velocity loads call for magnum primers with W296. I've reloaded quite a bit, but I've never touched magnum primers. What can I expect? What are the pros and cons? Are they really necessary?
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Old July 17, 2006, 08:19 PM   #2
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You ask: What can I expect? They will fit and sure enough work. Should feed through your loader same as standard primers. Personally I use Winchester LP for all my loading from Bullseye to H-110.
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Old July 17, 2006, 09:51 PM   #3
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The Winchester works fine and does double-duty as standard and magnum primer. The reason the loads call for magnum primers is that H110/W296 is a fine ball powder (they are different brand labels, but it is the same powder from the same plant). Ball powders are notoriously harder to ignite consistently than either flake or stick powders, and they need the larger flame of a magnum primer to do it successfully. A magnum primer can raise pressures a little, so if you switch primers (or any other component) on an established load of any other powder, you must work the load up over again, watching for pressure signs.

The exception is H110/W296 loads. The peak pressure margin with this powder is so safe that you can just load the factory recommendation. This used to be a single recommendation for each bullet in .357 and .44 magnum from Winchester, but is now a narrow 3% range. You should not underload this powder in a revolver because its pressure peaks after the bullet jumps to the barrel and an undercharge can bleed enough pressure out the barrel/cylinder gap to fizzle, leaving a bullet stuck in the barrel.

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Old July 18, 2006, 08:50 AM   #4
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Sounds like you knew what I was getting at. I was specifically looking at the magnum primer/ W296 load.
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Old July 18, 2006, 06:03 PM   #5
Ammo Junky
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I have found my loads with H110 shoot and chrono the same with wlp and flpm.
Will work for brass.

I apologise in advance for spelling errors.
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Old July 20, 2006, 04:31 PM   #6
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Thanks for the info Ammo Junky..........Creeker
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Old July 20, 2006, 05:54 PM   #7
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Great Gun

I've had my Ruger Super Redhawk 44mag.7 1/2"for right at a year now.
And I'll have to say,it's a blast to shoot,the H110 20.0 grains and a 250grain Nosler.
I've got a Leupold 4 power and its great.
Sure it takes a bit longer to find the targer at first.
But the more you shoot it, the faster and better you get.
Sure some say that you can see the cross hairs move more on the targer, with a higher power.
But I would rather know when I was off the target,than to shoot and miss.
Right now once the sun sets here in Texas at 98 HOT HOT,but feels like 103.
I'll be going for my 2 mile walk,with my 44.
I 'm dry firing the Ruger and keeping in shape for hunting season.
as I walk.
This saves a lot of reloading and it's ok to dry fire.
Great choice
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Old July 20, 2006, 06:29 PM   #8
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Glad to hear it

That's the kind of stuff I want to hear. I appreciate it.
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Old July 20, 2006, 08:32 PM   #9
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I load WW 296 in my 44 mag, and I use Winchester large pistol primers. No magnum primers, they give erratic pressures and velocities.
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But what do I know?
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Old July 21, 2006, 08:16 AM   #10
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Was recently loading up a batch of 10mm, when I realized that I only had magnum lp primers on hand. Loaded them; shot them; can't tell any difference. I'm not loading max loads, though.
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Old July 21, 2006, 05:13 PM   #11
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I ask the same question to Hornady about the .480 Rugar.
They said:
1: Win LP primers are ok because they are intended for Magnum rounds too.
2: If I use Fed Primers… I must use Magnum
3: If I used Fed LP non-magnum primers, I should pull & de-prime, and use fed LP Magnum primers.

So I did.
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