327 fed magnum bullets

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spawndn72

New member
Badman bullets makes 100 grain RNFP and 78 grain RN coated bullets that are both .313 diameter. Would either be ok for the 327? Ideally I would like to be able to use the same bullet for 327 and 32 S&W long.
I will be using these in a Ruger SP101 with 4.2" barrel.
 
The choice depends on what you want to do with it. If you like that bullet shape, I would see about getting a small quantity of each one for testing.

As to fitting, both should be easy in that regard. Full wadcutters for .32 are 80 to 100 grains, and they are seated all the way down so they are flush with the case mouth in .32 S&W Long. So there is no chance your bullet choice won't function in both cartridges with loads adjusted for them.
 
Hornady!

The Hornady XTP will handle anything the 327 can dish out from a pistol. They can hold up to 32-20 rifle speeds. They are true jacketed and reasonably priced. Why look further for something not as good? The 100 grain version of the XTP would be my choice. rc
 
The Hornady XTP will handle anything the 327 can dish out from a pistol. They can hold up to 32-20 rifle speeds. They are true jacketed and reasonably priced. Why look further for something not as good? The 100 grain version of the XTP would be my choice. rc
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I should have mentioned that these will be purely for punching holes in paper.
After doing more research I found others using .313 diameter bullets, so that answers my question. I bought a thousand of the polymer coated 100 grain RNFP's for $76, that's about half of what the Hornady's cost
 
Run them at slow or moderate speeds, and they'll be fine.
Push them to .327 Federal pressure levels, and you may damage the forcing cone (or worse).
 
Run them at slow or moderate speeds, and they'll be fine.
Push them to .327 Federal pressure levels, and you may damage the forcing cone (or worse).
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What is this based on? What I have found say that they are good for 1200-1500 fps.
 
There is no magic velocity number. Bullets either are subjected to too much pressure to keep their shape well or are made to spin too fast to hold together. The velocities associated with these limits change with barrel length and rifling twist rates.
 
I am confused. I am just trying to figure out why pushing these bullets to 327 federal magnum pressures could damage the forcing cone or worse.

Is it because they are lead and could deform at those pressures?

Forgive my ignorance, I am just fairly new to this. And very new to this caliber.
Most of my experience is with 9mm, 45ACP and 357 mag
 
The .327 Federal has the space for propellant AND the maximum SAAMI pressure allowable (45kpsi) to deform light for caliber or lightly constructed bullets. If you run a light bullet hard in .327 Federal, you can distort that bullet such that it will slam in to the forcing cone out-of-round.

A 71 grain FMJ bullet designed for the .32 ACP is a good example -- the .327 has enough propellant space to send that bullet at the speed of light. But... don't do it in a revolver that you love.
 
A 71 grain FMJ bullet designed for the .32 ACP is a good example -- the .327 has enough propellant space to send that bullet at the speed of light. But... don't do it in a revolver that you love.
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I bought the 100 grain bullets. According to the website they are hardcast bullets(16BHN) that are coated with 2 layers of baked on polymer and then sized.

I will be shooting these out of a Ruger SP101 with 4.2" barrel.
 
100 gr is pretty heavy and slow for a 32 SWL. I use 78 in 32 SWL and 95 or 100 in 327 Federal. My guns have no leading issues at any level in the 327 loads with 95-100 gr, including max loads with magnum powder like AA#9. Using 78 gr in 327 would be too much velocity for a lead bullet, I expect, and you might not find load data for it. There is a subsonic load for 327 Federal 100gr, which I use in my carry gun, which might be worth a sample try with 78 gr., if inclined to fly without supporting proven data.

32 SWL load data in Lyman shows velocity for 100 gr. hovering around only 600 fps. I suggest adding some 78 gr for the 32 SWL and forget about compromising to have a common bullet.
 
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The warning of forcing cone damage by running bullets beyond the scope of their design comes from multiple different ballisticians at Alliant.
 
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What it doesn't have is discussion on coated slugs. It needs it!
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Thanks. Hopefully I can help with that situation.
I emailed badman bullets to ask about the max pressures and velocity for their 100 grain RNFP coated bullets. Hopefully they will get back to me.
 
This same situation (having a cartridge with the ability to run bullets -way- beyond the limit of their construction) is also a prevalent with the .454 Casull and .460 S&W Magnum.

The situation is "the perfect storm", all it requires is a modern cartridge with a high or VERY HIGH maximum allowable SAAMI pressure and enough case volume for a fat load of propellant and also utilizing a diamter of bullet that was long, long ago established at half or a third of the pressure in a century old cartridge.

If you use run of the mill .45 Colt jacketed slugs in a .460 S&W Magnum and push them near 60,000 PSI, you'll experience exactly what we are talking about with the .327 Federal.

This issue is as much a "revolver with cylinder to forcing cone" jump as anything. If you have a Contender or Encore and you want to go crazy with lightly constructed bullets, you aren't likely to damage anything.
 
One thou isn't going to make any difference. The only issue you might have is finding .32 S&W Long 78 grain data. Don't think it'd be terribly difficult either. There isn't any on Hodgdon's site. Don't have my Lyman book here to look.
Badman says about their polymer coated bullets(on their FAQ page), "...these bullets can be pushed out to 2,200 fps..." Max loads for the .327 are a very long way from that.
"...100 gr is pretty heavy and slow for a 32 SWL..." There's 98 grain cast HBWC data on Hodgdon's site. The Max HP38 load runs 861 FPS out of a 5.32" barrel. It'll be a bit slower out of your 4.2" barrel.
 
Are you going to know what powder they used? Different powders loaded to produce the same velocity with the same bullet don't produce the same peak pressure (what you are interested in), only the same average pressure. Slower powders achieve that average with a lower peak and higher muzzle pressure and vice versa.
 
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