Roll Crimped Cases [Archive] - Glock Talk

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re223
10-31-2010, 10:49
I have some old fiocchi .380 fmj rounds that appear to have been crimped by the factory. Can these be reloaded? Needless to say, I'm very new to reloading. Thanks.

http://i1183.photobucket.com/albums/x466/re357/100_1355.jpg

Zombie Steve
10-31-2010, 10:50
Roll crimped? Really?


Put 'em through your sizer and load away.

WiskyT
10-31-2010, 12:10
The 380ACP round would not be roll crimped by any ammunition factory.

dudel
10-31-2010, 12:40
I have some old fiocchi .380 fmj rounds that have been roll crimped by the factory. Can these be reloaded? Needless to say, I'm very new to reloading and only familiar with taper crimping. Thanks.

Hard to imagine a factory .380 round being rollcrimped since the round headspaces on the case mouth. A picture would certainly be interesting (and added to the list of factory ammo screwups).

Maybe you are referring to a crimped primer? I can certainly see a factory round having a crimped primer. Those can be reloaded after you swage/chamfer the primer pocket.

Bello
10-31-2010, 14:44
ya i agree with dudel he probably means the crimped primer spot i think some fiocchi ammo comes with crimped in primers

WiskyT
10-31-2010, 15:27
http://cartridgecollectors.org/glossary.htm

Colorado4Wheel
10-31-2010, 15:45
He is talking about the bullet crimp around the base of the bullet.

Yes, you can reload those.

WiskyT
10-31-2010, 15:58
He is talking about the bullet crimp around the base of the bullet.

Yes, you can reload those.

And what do we call that class?

dudel
10-31-2010, 16:09
And what do we call that class?

Well, if it's around the projectile, it's called a cannelure. IIRC, it's called the same thing if found on the round itself.

dudel
10-31-2010, 16:10
He is talking about the bullet crimp around the base of the bullet.

Yes, you can reload those.

That's not a bullet crimp (doesn't crimp the projectile). It's designed to prevent setback. And yes, they can be reloaded.

WiskyT
10-31-2010, 16:11
Well, if it's around the projectile, it's called a cannelure. IIRC, it's called the same thing if found on the round itself.

Correct. You can skip the rest of your classes and play floor hockey in gym for the rest of the day, or just go home.

GioaJack
10-31-2010, 16:26
Now you see why I always suggest that newbs read, read, read and read some more. No one ever listens to me... especially Wisky.


Jack

Colorado4Wheel
10-31-2010, 17:33
I couldn't spell canellure. But I can spell lots of other words.

sicbstrd
10-31-2010, 18:49
That's not a bullet crimp (doesn't crimp the projectile). It's designed to prevent setback. And yes, they can be reloaded.


why do they do it in on some .38 and .357mag rounds? those creep foward not setback, right? :dunno:

WiskyT
10-31-2010, 19:05
why do they do it in on some .38 and .357mag rounds? those creep foward not setback, right? :dunno:

I've read, on the internet FWIW, that the cannelures on revolver rounds are to identify what load is in there. The old semijacketed HP bullets all look the same regardless of weight. You can't tell if it's a Winchester 125JHP or a 158JHP from the outside. But since I've never seen a guide to how to use the cannelures (legend) I guess it would just be for the factory?:dunno:

sicbstrd
10-31-2010, 19:13
10-4, that makes sense. Thank You, I have always wondered that but never really knew what thay were all about.

GioaJack
10-31-2010, 19:19
I've read, on the internet FWIW, that the cannelures on revolver rounds are to identify what load is in there. The old semijacketed HP bullets all look the same regardless of weight. You can't tell if it's a Winchester 125JHP or a 158JHP from the outside. But since I've never seen a guide to how to use the cannelures (legend) I guess it would just be for the factory?:dunno:


Alright smarty pants... I have ammo cans full of WW once fired brass that Uncle was kind enough to give me. We used to train with 148 grain wadcutters in the Air Force... every one of the cases has a cannelure.

What say ye now.... hmmm?


Jack

WiskyT
10-31-2010, 19:26
Alright smarty pants... I have ammo cans full of WW once fired brass that Uncle was kind enough to give me. We used to train with 148 grain wadcutters in the Air Force... every one of the cases has a cannelure.

What say ye know.... hmmm?


Jack

I agree, not enough recoil to warrant extra "crimping" in the middle of the case, and no need to discern different loads since pretty much all full wadcutters are 148 grain wadcutters.

Colorado4Wheel
10-31-2010, 19:30
It's clearly because of the awesome power of the .357 and the .380 that they cannelure it like that.

sicbstrd
10-31-2010, 21:25
It's clearly because of the awesome power of the .357 and the .380 that they cannelure it like that.


:rofl: yep, i darn near broke a nail shooting my .380 eariler today

Patrick Graham
10-31-2010, 21:44
I have some old fiocchi .380 fmj rounds that have been roll crimped by the factory. Can these be reloaded? Needless to say, I'm very new to reloading and only familiar with taper crimping. Thanks.

http://i1183.photobucket.com/albums/x466/re357/100_1346.jpg

Looks blur crimped to me.

WiskyT
11-01-2010, 17:19
Looks blur crimped to me.

It looks fine to everyone else. The Nuns were right, stop playing with that thing and use it to make babies only.

MrOldLude
11-02-2010, 09:51
Looks blur crimped to me.
I'm with you.

For semi-close shots, digital camera users should be able to utilize the macro feature.

http://www.cnet.com/i/hlp/L4_macro_icon.jpg

Selected via dial, button, or menu.

Dogue
11-02-2010, 13:00
It looks fine to everyone else. The Nuns were right, stop playing with that thing and use it to make babies only.
:rofl:

And yes, the cannelure on the case is to prevent bullet setback on straight walled cases.

re223
11-08-2010, 22:40
Thanks for clearing this up for me everyone.

fredj338
11-08-2010, 23:44
I've read, on the internet FWIW, that the cannelures on revolver rounds are to identify what load is in there. The old semijacketed HP bullets all look the same regardless of weight. You can't tell if it's a Winchester 125JHP or a 158JHP from the outside. But since I've never seen a guide to how to use the cannelures (legend) I guess it would just be for the factory?:dunno:
SO why were some 45colt factory loads cannelured? I don't think they ever varied the 255grRNLFP?:dunno: