Time of Flight

[98PK]

See several threads about the PCC, so I know somebody here must've done some experimenting with fastest/accuratest loads. What kind of muzzle velocity can one expect? What works best? Worst?
Several you tube reviews show someone shooting one, then it hangs up. What
gives?

 

[22/45 Fan]

The fastest load will be a sub-100 gr bullet at +P pressure. The most accurate load will vary from gun to gun and no one can answer that question for you. There have been a couple of threads here giving chronograph data for a few loads comparing them in both a pistol and the PC Carbine.

Yes, "Hickok 45" did have some feed problems with the first PC Carbine he tested but had good results with the second one. Other testers have had no problems. Mine had a few stovepipe failures when I first tried it but after a couple of hundred rounds it has run 100%. Mine is particularly fond of 124 gr powder coated "Blue Bullets" driven by a maximum recommended charge of TiteGroup. Who knows what yours will like?

 

[98PK]

Yeah, kind of a very broad question. I didn't see the second of Hikock's reviews. Good to know. One if my friends has shot his extensively and had had no jams. Just kind of curious what muzzle velocity neighborhood one could actually expect. No matter. Thanks for your reply, dude.

 

[robmkivseries70]

Yeah, kind of a very broad question. I didn't see the second of Hikock's reviews. Good to know. One if my friends has shot his extensively and had had no jams. Just kind of curious what muzzle velocity neighborhood one could actually expect. No matter. Thanks for your reply, dude.

Here is a link to the "Ballistics by the Inch" 9mm page. http://ballisticsbytheinch.com/9luger.html This should answer your question. :mrgreen:

 

[grobin]

robmkivseries70
Thanks. Nice resource.

As for accuracy Lyman, among others, offers indications of the most accurate load. They are very seldom the fastest. Unfortunately, this isn't that useful as an indicator of accuracy in the PCC. The only way to find out is to try some loads. How many depends on y'r goal. Obviously if you are doing serious target competition it will take more than simple defense or plinking.

 

[COSteve]

Deleted

 

[98PK]

Thank you for the replies- good info. Had my PCC out twice now. One hundred yards really isn't that far for it. Cleaned it today, and other than inadvertantly dropping the slide stop out of the trigger group when reassembling, it went off without a hitch. These carbines work, shoot and maintain very well!

 

[mohavesam]

Question was different from the title,so I was confusal... :?

"Time of flight" is not measurably affected by velocity, of course.
Recall the old addage (actually a simple physics principle), that gravity affects all things the same, whether moving horizontally or stationary.
Remember that if one were to drop a similar bullet from muzzle height (with a level barrel and all things considered) at the same instant the gun is fired - both bullets would hit the ground at the same time. :shock:
Horizontal Velocity only affects the distance the fired bullet insofar as where it hits the ground, not how long it takes to get there.
In other words, velocity does not overcome gravity. But we all knew that. :oops:

As to the PCC drift, I cannot comment firsthand, I have not purchased nor fired one of the new ones.

 

[grobin]

Time of flight is the time from when the bullet leaves the muzzle to when it strikes a target at some distance. It has little to do with gravity as it's solely related to exterior ballistics! (Some measure from when the round is fired to when the bullet strikes.). The question appears to actually be about MV of loads. That can be used to approximate time of flight for short distances where exterior ballistics are a minor factor.

 

[Ale-8(1)]

D=RT or T=D/R

D=Distance travelled
R=Rate of travel (velocity)
T=Time of travel

Wind and just calm air drag will enter into this, as will ballistic coefficient, but basically it's pretty straightforward. It's not a straight-line thing, though, as the bullet's velocity slows down as it travels, so the formula refers to AVERAGE velocity.

Given enough time, all bullets eventually hit the ground of course, per the gravity thing and the elevation of the muzzle.

 

[grobin]

Ale-8(1)

That's an extremely naif view! Take a look at https://en.m.wikipedia.org/wiki/External_ballistics
For the real deal.

 

[JFB]

...
Recall the old addage (actually a simple physics principle), that gravity affects all things the same, whether moving horizontally or stationary.
Remember that if one were to drop a similar bullet from muzzle height (with a level barrel and all things considered) at the same instant the gun is fired - both bullets would hit the ground at the same time. :shock:
...

so, if you know the time of flight, the drop will be the same no matter the velocity OR bullet weight, size, etc

drop = 194" X seconds X seconds

 

[98PK]

I just used "Time of Flight" because it was the first thing that came to mind. It ain't like a .223 though, you can almost count how long it takes to get to the ram (and the "clunk" to get back!) That's kind of what I was about :wink: I'm gonna go out there on the next levergun shoot and plink those rams up on the hill (...knock down those the cowboys left up.) That's fun stuff. May have to take the ole '94 out there and actually enter also! (Whoops, "94" might be a bad word on this site :oops: ) Kinda answered my own question here, while later out on the rifle range.

....Oh and I've shot about six boxes through it and nary a hitch, glitch or _itch. Thing works great. I really like it!

 

[Ale-8(1)]

Ale-8(1)

That's an extremely naif view! Take a look at https://en.m.wikipedia.org/wiki/External_ballistics
For the real deal.

You can take the discussion as deep as you like, the basics remain the same. We all have access to Wikipedia.

:wink:

 

[grobin]

Ale-8(1) as you didn't get what I said I'll put it less politely and more explicitly, your view is either totally ignorant or mentally deficient. Try reading the article for enlightening information. You can use wolframalpha to do some of the ballistics calculations so you can understand what is going on.

 

[mohavesam]

- Use the PM feature for one-to-one exchanges?

To the query: I recall from HS physics that inertia cannot overcome gravity, it just affects where gravity (and/or friction) wins.
The old adage remains true that a bullet dropped from the same height as your level muzzle, all things being equal, impacts the ground at exactly the same instant as a similar bullet fired at any velocity.

So time of flight is equal to time of "drop", measure that and you'll have the answer to the OP. 8)