.32 v. .380?
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I think we all have a good understanding of rimlock and of substandard ammo. If the ammo is substandard in OAL and is semrimmed you can induce rimlock. If the ammo is substandard in any dimension you can induce feed failures in any caliber. The rimlock is caused by the substandard dimension.
For instance you never hear of rimlock in the 9MM Browning Long. I know the burning question in your mind is "Why don't we hear of rimlock in the 9MM Browning Long, 106rr" It's because the ammo was not produced in substandard dimensions. The 9MM Browning Long is of course a semirimmed cartridge.
In modern firearms of good quality and design you will have very few feed failures with good quality ammo. The CZ 83 for instance is produced in both 32 ACP and 380 ACP. It feeds and functions beautifully with either load. With substandard ammo, you can jam anything even a Glock!
For instance you never hear of rimlock in the 9MM Browning Long. I know the burning question in your mind is "Why don't we hear of rimlock in the 9MM Browning Long, 106rr" It's because the ammo was not produced in substandard dimensions. The 9MM Browning Long is of course a semirimmed cartridge.
In modern firearms of good quality and design you will have very few feed failures with good quality ammo. The CZ 83 for instance is produced in both 32 ACP and 380 ACP. It feeds and functions beautifully with either load. With substandard ammo, you can jam anything even a Glock!
106rr,
The quality of the ammo has nothing to do with rim lock!
Rim lock can and will occur with the finest semi rimmed ammo.
I can direct you to a site that will give you a very clear explanation of what rim lock is and why it happens.
Below is picture of an actual rim lock.
Click on the picture of the actual rim lock to get a clear and precise explanation.
The quality of the ammo has nothing to do with rim lock!
Rim lock can and will occur with the finest semi rimmed ammo.
I can direct you to a site that will give you a very clear explanation of what rim lock is and why it happens.
Below is picture of an actual rim lock.
Click on the picture of the actual rim lock to get a clear and precise explanation.
kokopelli;
No one is wondering what rimlock is - we all know what rimlock is - we all know it can happen if the OAL is substandard. The photo shows the cartridges unrestrained by a magazine. It is the OAL of the cartridge and the inside of the mag that prevents rimlock. The substandard ammo dimension would be the OAL. If the OAL is correct the ammo will not rimlock. The forward wall of the mag prevents it. Please note that other sem-rimmed ammo (9MM Browning Long etc ) does not rimlock.
No one is wondering what rimlock is - we all know what rimlock is - we all know it can happen if the OAL is substandard. The photo shows the cartridges unrestrained by a magazine. It is the OAL of the cartridge and the inside of the mag that prevents rimlock. The substandard ammo dimension would be the OAL. If the OAL is correct the ammo will not rimlock. The forward wall of the mag prevents it. Please note that other sem-rimmed ammo (9MM Browning Long etc ) does not rimlock.
106rr, are you saying that there is a standard OAL? And that 32 acp rounds that are at a specific OAL will not rim lock? If that is what your saying, than I really don't think you understand what rim lock is.
OAL Varies all over the board on all sizes of ammo. FMJ is almost always longer than JHP!
It's the "rim" that causes "Rim Lock", not OAL variations.
According to you, all but maybe one or two of these brands are substndard since they all have different OALs !
Glaser Blue- .974
CoBon jhp- .900
HYDRA sHOK- .908
Fiocchi jhp- .922
Hornady jhp- .908
MagTech jhp- .961
Gold Dot- .900
Blazer fmj- .965
Fiocchi fmj- .973
MagTech- .962
Remington fmj- .970
Winchester fmj- .974
OAL Varies all over the board on all sizes of ammo. FMJ is almost always longer than JHP!
It's the "rim" that causes "Rim Lock", not OAL variations.
According to you, all but maybe one or two of these brands are substndard since they all have different OALs !
Glaser Blue- .974
CoBon jhp- .900
HYDRA sHOK- .908
Fiocchi jhp- .922
Hornady jhp- .908
MagTech jhp- .961
Gold Dot- .900
Blazer fmj- .965
Fiocchi fmj- .973
MagTech- .962
Remington fmj- .970
Winchester fmj- .974
denfoote
Member
I would say that if I were looking for a 7.65mm HP that most closely resembled FMJ, then I would have to go with the Magtechs!!
Denfoot,
I agree.
Except for Glasser blue, it has the closest OAL to fmj of all the jhp.
The only thing is, in goldenloki's gelatin test from a P-32, only 2/3 of the Magtech jhp expaned from and those that did had very little expansion.
I agree.
Except for Glasser blue, it has the closest OAL to fmj of all the jhp.
The only thing is, in goldenloki's gelatin test from a P-32, only 2/3 of the Magtech jhp expaned from and those that did had very little expansion.
MachIVshooter
Member
And semi-rimmed cartridges should not rimlock for one simple reason:
The rim of the upper cartridge falls into the extractor groove of the lower, and under spring pressure will not go anywhere else. The magazines for .25 and 32 ACP magazines are designed with angles so that the cartridges stack this way. So regardless of OAL, this is how they will stack. They were designed from the get go to function this way. To suggest that the rim of one sitting in the beveled extractor groove of the next creates enough resistance to be problematic in feeding would be to assume that JMB did not know what he was doing. This is not, however, to account for the various poorly-manufactured .25's and .32's abound. But don't blame cartridge design for the failures of junk guns.
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BluesBear
member
Rimlock most commonly occurs after the magazine is half empty.
The reduced tension on the magazine spring can allow the cartridges to bounce or shift in the magazine, under recoil, just enough to reposition the rim relationships.
The reduced tension on the magazine spring can allow the cartridges to bounce or shift in the magazine, under recoil, just enough to reposition the rim relationships.
Sean O'Brian
Member
Concealability
Anyone who knows me won't need to hear me 'fess up to the fact that I am a 1911 enthusiast, and my preferred carry concept is the 3" barrel "Officer's" size 1911, preferably by Kimber.
When I hear someone saying that they need something more concealable than a Walther PPK or 1911 Officer's, I wonder at what nudist colony they are spending time.
Unless you need something to wear under your cocktail dress...
cheers,
-Sean
Anyone who knows me won't need to hear me 'fess up to the fact that I am a 1911 enthusiast, and my preferred carry concept is the 3" barrel "Officer's" size 1911, preferably by Kimber.
When I hear someone saying that they need something more concealable than a Walther PPK or 1911 Officer's, I wonder at what nudist colony they are spending time.
Unless you need something to wear under your cocktail dress...
cheers,
-Sean
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