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Barrel Rifling


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Ronin_23 #1 Posted 25 April 2019 - 04:27 PM

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So I was looking through my garage just now and noticed that the KpfPz 70 has some pretty cool barrel rifling that's visible. I looked at my other tier 9s and 10s and didn't find the same.

 

It's totally irrelevant to the battle effectiveness of the vehicle and even serves a negligible cosmetic purpose, but I like it. Anyone else noticed the same on another tank?

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Edited by Ronin_23, 25 April 2019 - 04:29 PM.


__The_Dude_30__ #2 Posted 25 April 2019 - 04:58 PM

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Thanks to you, now I'm going to go waste half an hour today and check all of the guns in my garage for rifling. Thanks a bunch

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Vantablack12 #3 Posted 25 April 2019 - 05:41 PM

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View Post__The_Dude_30__, on 25 April 2019 - 11:58 AM, said:

Thanks to you, now I'm going to go waste half an hour today and check all of the guns in my garage for rifling. Thanks a bunch

 

this is is good content
I cant find anything to put here.

ShootinSabot #4 Posted 25 April 2019 - 05:51 PM

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View Post__The_Dude_30__, on 25 April 2019 - 09:58 AM, said:

Thanks to you, now I'm going to go waste half an hour today and check all of the guns in my garage for rifling. Thanks a bunch

 

me too

                                                                                          

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9_V0LT #5 Posted 25 April 2019 - 06:01 PM

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Some tanks had rifled barrels and some were smooth bore.

Most tanks went to smooth bore, after the 70's, when fin stabilized sabot rounds came into production


Yeah, I'm back. Let's not make a big deal about this.


John_Haefke #6 Posted 25 April 2019 - 06:20 PM

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The stb1 has rifling 

 



deathman4 #7 Posted 25 April 2019 - 08:36 PM

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T95E6, leopard 1, the T62A but really slightly, the fv215b and the fv215b 183. The strv 74a2 as well I think

 



9_V0LT #8 Posted 25 April 2019 - 08:57 PM

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View Postdeathman4, on 25 April 2019 - 08:36 PM, said:

T95E6, leopard 1, the T62A but really slightly, the fv215b and the fv215b 183. The strv 74a2 as well I think

 

 

Anything shooting HESH will have rifiling.

 


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__Crusader6__ #9 Posted 26 April 2019 - 11:57 AM

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View Post9_V0LT, on 25 April 2019 - 01:01 PM, said:

Some tanks had rifled barrels and some were smooth bore.

Most tanks went to smooth bore, after the 70's, when fin stabilized sabot rounds came into production

 

Discarding Sabot allows for rifling.  The British 120mm is rifled, and can still fire APFSDS rounds, the NATO 105mm tank guns also where rifled. 

 

The change to smoothbore seems to be economic more than anything else, if you don’t need the rifling for accuracy it’s cheaper not to rifle.  

I’ve been told previously it was due to the copper drive bands on solid projectiles for rifled tank guns limit velocity - but none of the kinetic penetration munitions these days are solids as the mass and L over D aren’t conducive for that anyway. 

 

 

 

 

 

 

  


 
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TheDirtdart #10 Posted 26 April 2019 - 12:21 PM

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Smoothbores allow for less drift at extreme ranges when shooting sabot rounds. There is no need to create stability through spin when firing finned rounds. Also, the spin generates lift which depending on the direction of rifling make the round go up and left or right. The round flies a slight corkscrew. 

 

We can shoot some incredible ranges these days. Good ballistic computers and optics do the trick Kentucky windage used to cover. In the era most of our tanks existed, the optics and gun mounts only allowed for a certain amount of precision. The tanks in most cases were mass produced. 

 

I think the Bradley is the only gun on a tracked vehicle (us) that has both rifling and shoots sabot. That was a choice to be able to fire he at range. I personally have it stuff at 1700m or so with HE so it works....but there is also a ballistic computer doing some magic. 



Melissa_Durat #11 Posted 26 April 2019 - 01:40 PM

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The Indian tank Arujn I and II are MBTs with rifled barrels.:)

TheDirtdart #12 Posted 26 April 2019 - 04:08 PM

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Interesting. I wonder if their ballistic computers can handle the variations to shoot over 4k. I'll check it out. Thanks. 

9_V0LT #13 Posted 26 April 2019 - 06:44 PM

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View Post9_V0LT, on 25 April 2019 - 06:01 PM, said:

 

Some tanks had rifled barrels and some were smooth bore.

Most tanks went to smooth bore, after the 70's, when fin stabilized sabot rounds came into production

 

View Post

View Post__Crusader6__, on 26 April 2019 - 11:57 AM, said:

Discarding Sabot allows for rifling.  The British 120mm is rifled, and can still fire APFSDS rounds, the NATO 105mm tank guns also where rifled. 

 

The change to smoothbore seems to be economic more than anything else, if you don’t need the rifling for accuracy it’s cheaper not to rifle.  

I’ve been told previously it was due to the copper drive bands on solid projectiles for rifled tank guns limit velocity - but none of the kinetic penetration munitions these days are solids as the mass and L over D aren’t conducive for that anyway. 

View PostTheDirtdart, on 26 April 2019 - 12:21 PM, said:

Smoothbores allow for less drift at extreme ranges when shooting sabot rounds. There is no need to create stability through spin when firing finned rounds. Also, the spin generates lift which depending on the direction of rifling make the round go up and left or right. The round flies a slight corkscrew. 

 

We can shoot some incredible ranges these days. Good ballistic computers and optics do the trick Kentucky windage used to cover. In the era most of our tanks existed, the optics and gun mounts only allowed for a certain amount of precision. The tanks in most cases were mass produced. 

 

I think the Bradley is the only gun on a tracked vehicle (us) that has both rifling and shoots sabot. That was a choice to be able to fire he at range. I personally have it stuff at 1700m or so with HE so it works....but there is also a ballistic computer doing some magic. 

 

 

 

 

View Post9_V0LT, on 25 April 2019 - 08:57 PM, said:

 

 

 

 


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TheDirtdart #14 Posted 26 April 2019 - 07:14 PM

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Haha. Hey man this is about the only place save a tank museum you can nerd out on tank stuff! 

 

We could go airplanes if you wish...



__Crusader6__ #15 Posted 26 April 2019 - 07:39 PM

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View PostTheDirtdart, on 26 April 2019 - 11:08 AM, said:

Interesting. I wonder if their ballistic computers can handle the variations to shoot over 4k. I'll check it out. Thanks. 

 

Easy day.   

   

 1)  Rifling doesn’t affect DS rounds.  The affect of the rifling if negated as soon as the sabot splits off and the fins pop 

 2)  Rifling is easily factored in by Ballistic Comps - heck commercial programs for small arms can factor it (when accounting for the large amount of spin drift when you shoot something like a 1:7 twist 7.62 barrel versus a 1:10 or 1:12). 

 

 

 

 


 
Tank Hoarder: 365 tanks in Garage:  366/368 aced (AMX 30B, Mk1 and T49A repo),    wallet warrior.  Loyal M60 owner
I think 5.5 was good for the game - But I also want my Kenny OP nerfed. 
Sorry I haven’t aced the Smasher yet - So I’m still ruining tier 6-8 

 


TheDirtdart #16 Posted 26 April 2019 - 07:58 PM

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View Post__Crusader6__, on 26 April 2019 - 07:39 PM, said:

 

Easy day.   

   

 1)  Rifling doesn’t affect DS rounds.  The affect of the rifling if negated as soon as the sabot splits off and the fins pop 

 2)  Rifling is easily factored in by Ballistic Comps - heck commercial programs for small arms can factor it (when accounting for the large amount of spin drift when you shoot something like a 1:7 twist 7.62 barrel versus a 1:10 or 1:12). 

 

 

 

 

 

I am not sure about your first point. Once a spin is started, regardless of how slow it is, it impacts the trajectory of your bullet. Second point though, really is amazing. I bought a 300 Win Mag to try to hit 1000 yards a few years back. Never bough the comp and tried to reconcile changes based off notes and wind. Really hard to shoot those distances in Kansas, to say it is windy is an understatement. My scout platoon had the Barretts. With those big heavy rounds they could pull of some long range shots. They were also school trained snipers, which I am not. 

9_V0LT #17 Posted 26 April 2019 - 08:29 PM

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View PostTheDirtdart, on 26 April 2019 - 07:58 PM, said:

 

I am not sure about your first point. Once a spin is started, regardless of how slow it is, it impacts the trajectory of your bullet. Second point though, really is amazing. I bought a 300 Win Mag to try to hit 1000 yards a few years back. Never bough the comp and tried to reconcile changes based off notes and wind. Really hard to shoot those distances in Kansas, to say it is windy is an understatement. My scout platoon had the Barretts. With those big heavy rounds they could pull of some long range shots. They were also school trained snipers, which I am not. 

 

I once shot a squirrel at 25 meters, with an M16 blank and a section of cleaning rod. 

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