PM9 chronograph results

[jimsea]

And you base this statement on...?



I don't think so.

http://kahrtalk.com/showthread.php?t...ograph+results post #9

FWIW while doing some CM9 research prior to purchase, I found the test results mentioned in this thread.........feel free to do your own search.

[JFootin]

Here is a post that shows chrono results between a K40 and a CW40. Now what do you think?

http://kahrtalk.com/showpost.php?p=76975&postcount=6

[Thunder71]

Nobody to my knowledge has compared apples to apples as of yet. Close but different doesn't prove anything at all to me.

[JFootin]

Nobody to my knowledge has compared apples to apples as of yet. Close but different doesn't prove anything at all to me.

What do you mean? A K40 with polygonal barrel against a CW40 with conventional rifling. Isn't that what we are talking about here?

[Thunder71]

Those are different, though similar. I'm waiting for a CM9/PM9 comparison done at the same time with the same ammo before I agree one way or the other about the barrel differences.

Equal guns, same shooter, different barrels.

[jocko]

also gotta remember every barrel is potentially different to. take 4 PM9 barrlels all polygonal rifled and thenthe same box of ammo and I bet the chrono reports will be different. Now can it ba the barrel, or the ammo or the chrono. we will just have to accept what we read and then decide ourselves. hAD MY pm9 HAD the convential rifled barrel in itk I could have cared less.

[MO_Soldier]

also gotta remember every barrel is potentially different to. take 4 PM9 barrlels all polygonal rifled and thenthe same box of ammo and I bet the chrono reports will be different. Now can it ba the barrel, or the ammo or the chrono. we will just have to accept what we read and then decide ourselves. hAD MY pm9 HAD the convential rifled barrel in itk I could have cared less.

Very true...but if there is ANY significance in the variation of muzzle velocities, the averages of the firings should reflect that.
Ie. 4 different PM9's might AVERAGE 1000fps, and then 4 CM9's might average 1020fps...etc. Thus establishing a consistent difference in muzzle velocity with the same rounds.

I HOPE my PM9 doesn't lack muzzle velocity. However, it seems to me that the extra friction required to spin my bullet faster for extra accuracy, will only yield a slightly slower bullet that is well worth the added accuracy.

[jocko]

good point and for me is their was 50ft difference in either, it would mean nadda to me. Pros and cons on the accuracy differene to. In a 3" bbl, I serioulsy doubt if polygonal rifled will do jack sh-t for accuracy. but again some people are just good shooters where as then there are people loike me that well ain't worth sh-t...

[MO_Soldier]

good point and for me is their was 50ft difference in either, it would mean nadda to me. Pros and cons on the accuracy differene to. In a 3" bbl, I serioulsy doubt if polygonal rifled will do jack sh-t for accuracy. but again some people are just good shooters where as then there are people loike me that well ain't worth sh-t...

Well think about a difference of 100fps for a moment.
With the typical self defense scenario being WITHIN 15ft, we will base it off just that.
A difference of 100fps divided by 15 is roughly 7. That means a difference of 100fps in your bullet's velocity only means .143 seconds behind the faster bullet upon impact. I don't know about you, but I can't move that fast! Maybe Bawanna can downhill(is that in bad taste?) I certainly don't mean any insult and have seen him joke about it.

Other than the effects velocity has on terminal ballistic behavior, it means nothing.

[MO_Soldier]

good point and for me is their was 50ft difference in either, it would mean nadda to me. Pros and cons on the accuracy differene to. In a 3" bbl, I serioulsy doubt if polygonal rifled will do jack sh-t for accuracy. but again some people are just good shooters where as then there are people loike me that well ain't worth sh-t...

Also, I've put several rounds in very close proximity to each other from 21 feet with my PM9. I can't objectify because I haven't shot the CM9...but I'd say that's pretty darn accurate for a 3" barrel!

[OldLincoln]

When I first got interested in Self Defense (about 4 years ago), I read everything I could find and researched it all to find just the right gun and ammo and studied the laws and watched the videos. I was sure I had all the answers but then over time I began to realize you can overthink this stuff. I now believe if you were to rank all guns in all calibers, all ammo, all shooting positions, all clothes, all holsters,, and all everything else, you could draw line under the least acceptable and about anything above that will do the self defense job.

Even the FBI says 12" of penetration in their controlled testing is a benchmark for ammo. They also have requirements for going through glass, etc. but they don't say you have to have n% expansion or maintain n% weight to qualify.

It has taken me a long time but I now say good is good enough.

[jocko]

sure makes alot of sense to me. We tend to over think on alof of things. I bet a BG can't tell the differenc in a 124 grain and a 147 grain hp going through him either!!!

[dirtengineer]

I know that my dad and I both have Taurus Model 44 .44 magnum with the 6.5" barrel. His is blue and mine is stainless. I get consistently 100 fps better. I have no idea why.