Quote from: Msnthrp on February 13 2019 06:15:15 PM MST
Have you tried Patriot Defense in Kemah, TX?  They will sometimes have EAA and IFG parts that no one else can get.. Or at least point you in the right direction..

Just a thought of where to start.

Thanks for the lead. I reached out to them to see if they could source one and they said the could not. 

Quote from: Rojo27 on February 12 2019 09:04:34 PM MST
Hey Scarlet,
As you reference and sqlbullet & shadow illustrated; study of ballistics is extremely complex topic. 

I would start by studying Terminal Ballistics:
Terminal ballistics - sub-field of ballistics, is the study of the behavior and effects of a projectile when it hits and transfers its energy into a target. Bullet design (expanding, flat point, fragmenting, solid, frangible to list a few examples) and sectional density as well as mass & velocity (source of the energy) at impact combine to determine the effectiveness. 

Always vital to know the application and the desired outcome. 

I'd recommend you start with a careful read the following:
http://rathcoombe.net/sci-tech/ballistics/methods.html

That should start you on the right track. 

Cheers

I just clicked on the link to start reading... and wow! You spared no expense on providing me an extraordinary piece that gets into all the technical and scientific components. I'll be having a good read for a few nights. Thank you for a great starting point for the extremely technical aspect.

Thank you all, this is very helpful. There's so many factors and as sqlbullet points out 10mm minimizes the compromises.

I need a little help/direction on what to go read/learn for a more comprehensive understanding of ballistics. I posted on the CZ reloading sub-forum, but wanted to get the insight from members here as Ya'll are freakishly smart too and willing to have conversations, rather than just attack each other.

This stems from people arguing over penetration. You know, weight means greater penetration vs energy....

I am reading on the details of sectional density, which seems to be the equation that helps put weight in perspective to specific bullet diameters and then penetration.

BUT - In the equation for energy, velocity is squared.

I am not trying to spark an argument on one vs the other. I am hoping to get direction on how these interact with one another. Weight means a sacrifice in velocity, which really impacts energy -- but in turn increases sectional density. Thereby, Supposedly increasing penetration? Why would that be the case? What parts/equations/principles of physics am I missing in this whole system to really understand this interaction?

I'll happily take explanations, references to articles, tests, even books. I understand this is complex and I will put in the reading and study if you tell me where to get the content. I'm just getting tired of hearing opinions and sales pitches. I want to really be able to sift through the science of this myself. Thank you for any and all help!

Again, I am not trying to spark arguments between the concepts. If there is disagreement let's all figure out the physics and be willing to really consider all aspects. "My Grandpa shot a F***ING Elephant with a 45 ACP and it penetrated the skull, so weight beats velocity!!!! Fight me if you disagree." Sort of anecdotes (while fun to hear) aren't the point of this and won't help me or us have this discussion. 

Quote from: sqlbullet on February 12 2019 01:38:36 PM MST
I just bought a used vertical mill, so I was looking into how i would make such a barrel from a blank...

Let's just say, I will never get there unless I can quit my day job.

I did learn you are going to be into the barrel blank for such a job about $120 before you make the first cut.

Jeez! I guessed cost would be around $250 to $300 but it sounds like it could be worse.

Quote from: sqlbullet on February 12 2019 09:08:18 AM MST
They would be crazy expensive on volume that low.

I know you're right and it just makes me sad to accept it.

Quote from: blaster on February 11 2019 05:14:58 PM MST
don't feel bad, I want one too. I wonder how many years ago they were in stock?

We need a custom shop that'll make them!

These things have been out of stock forever. I've never actually checked and seen them in stock... Just wondering if anyone has one they got and didn't really use and would be willing to sell. I know I am being picky, but I would like one that didn't have to be fitted by the owner to their pistol. 

Here's what I'm looking for to be precise.
http://eaacorp.com/gun_accessories/index.php/parts/tanfoglio/witness/barrels/10mm/6-match-grade-barrel-10mm-302335.html

I've mostly just been lurking since I sold my Witness Hunter in 10mm.  I've missed it and 10mm ever since.

Well today I was looking at different Tanfoglio models and availability. I realized a few things about the Stock 3 that were counter to descriptions I had read previously. Mainly the barrel is normal and not a cone or bull barrel. I looked for availability and found 1 for $811. Needless to say that got purchased pretty quickly. 

PS - If anyone knows how in the hell to get a 6" 10mm barrel from EAA please let me know. They have shown out of stock for at least a year (I just casually check in). I'll happily pay to have a shop make one custom if I need to. I can't find anyone who does...

Thanks SQLBullet. Looked but didn't look far enough in the list of posts.

Just saw this article pop up. Seems like Springfield has listened. What do ya'll think?

https://www.thefirearmblog.com/blog/2018/11/26/springfield-armory-ro-elite-operator/amp/

Quote from: NCTURBOS on October 12 2018 09:35:26 AM MDT

Quote from: Scarlett Pistol on October 11 2018 04:53:35 PM MDT

Quote from: NCTURBOS on October 09 2018 10:43:24 AM MDT
The guys at CGW advised me to NOT use that kind of power level in the CZ97b. This was a few years ago, and at the time I was inquiring about running 45-Super in the gun, since there was/is no 10mm conversion. It was suggested to stick to .45acp+p or less...

I plan on ordering a 10mm Stock-III in the next couple days to "fix" my itch!

K.

Ha, I've read that old thread a few times. When I asked Barsto I specifically asked about a threaded barrel because I'd reading your posts. I'd get a comp on it to help mitigate that potential issue. BUT I have been eyeing the Stock III. I desperately miss having a 10mm!!!

Quote from: kramer on August 25 2018 11:51:42 AM MDT
I tried my EAA Stock 3 14 round 10mm mags in my CZ97 and it fits just fine. Inserts and is held in place just fine, mag release works and the slide locks back on an empty mag.

Thanks for checking!

My Stock-III is due to arrive at the FFL/LGS on Monday, which is my birthday coincidentally... And a few goodies from Henning shipped out yesterday as well, so I'm looking forward to getting behind it shortly there after!

K.

Very nice! Can't wait to hear about it!

Quote from: NCTURBOS on October 09 2018 10:43:24 AM MDT
The guys at CGW advised me to NOT use that kind of power level in the CZ97b. This was a few years ago, and at the time I was inquiring about running 45-Super in the gun, since there was/is no 10mm conversion. It was suggested to stick to .45acp+p or less...

I plan on ordering a 10mm Stock-III in the next couple days to "fix" my itch!

K.

Ha, I've read that old thread a few times. When I asked Barsto I specifically asked about a threaded barrel because I'd reading your posts. I'd get a comp on it to help mitigate that potential issue. BUT I have been eyeing the Stock III. I desperately miss having a 10mm!!!

Quote from: kramer on August 25 2018 11:51:42 AM MDT
I tried my EAA Stock 3 14 round 10mm mags in my CZ97 and it fits just fine. Inserts and is held in place just fine, mag release works and the slide locks back on an empty mag.

Thanks for checking!

Quote from: Graybeard on July 08 2018 12:47:47 PM MDT
If I owned a CZ 97 I might be inclined to try out a mecgar or Tanfoglio mag first to make sure it fits. Perhaps someone here can confirm that for you.

I've read a few different report that they do on the CZ Forum but I'd be super appreciative if anyone here could confirm it as well.

I've read that the large frame mags from mecgar for Tabfoglio Witnesses work. There's definitely be some testing involved though.