9 and 10 mm.?

[splitshot]

2 qns.  1.  how many inches is 9 mm.?  2.  how many inches is 10 mm.?  my guess is 0.4 in. for 10 mm.  mike w

[longrangekiller]

what do u mean by inches? im confused 

[splitshot]

like a 7 mm. is 0.284 in. and a 6 mm. is 0.244 in.  how much is a 9 mm. and a 10 mm.?  mike w

[twinners]

If 6mm = .244 then just dividing them out comes up with .366 for 9mm and .407 for 10mm.

[smdave]

10MM Bullet diameter 10.16 mm (0.400 in)

9×19mm Parabellum (9mm Luger)
9.02 (.355)

[splitshot]

so are the 40 cal. and 10 mm. the same bullet and are interchangeable?  mike w

[smdave]

10mm is just a longer case

[lokidog]

The conversion factor is 1mm = 0.0393700787 in

Interesting, I always thought a 9mm was .380 cal.

[smdave]

The conversion factor is 1mm = 0.0393700787 in

Interesting, I always thought a 9mm was .380 cal.

380
Bullet diameter
 
.355 in (9.0 mm)

[splitshot]

  so a 10 mm. is longer case than a 40 with more kick , more noise and more ouch?   a friend just got a 10 for fathers day and has not shot it yet and that is why all the qns.  i have a 9 and my son has a 40 .  we are looking at reloading and thank you guys for answers.  mike w

[thurman]

divide mm by 25.4 to convert to inches. 9mm divided by 25.4 = .3543  10mm diveded by 25.4 = .3937

[smdave]

Combine and save 10 and 40 uses the same set of dies also.

RCBS Carbide 3-Die Set 40 S&W, 10mm Auto
 
Product #: 373992 RCBS #: 22115

[Whitelightning]

Combine and save 10 and 40 uses the same set of dies also.

RCBS Carbide 3-Die Set 40 S&W, 10mm Auto
 
Product #: 373992 RCBS #: 22115

Yes I have a 10mm and a 40S&W I reload for both same dies and yes you can use the same bullet for both. The 10 can be a little snappy if you load for that or it can be pretty tame like the 40S&W. I really like both fun to shoot and load. 10 brass is harder to find not real bad the 40 is easy find it all over.
One other note if you reload the 10 uses large pistol primers and the 40S&W uses small pistol primers.

[splitshot]

thanks,  a lot of qns have been answered.  i like this forum.  mike w

[brokenvet]

so are the 40 cal. and 10 mm. the same bullet and are interchangeable?  mike w

Projectile , YES interchangeable

[pianoman9701]

9mm = .354 cal
10mm= .394 cal

not sure about any interchangability, but those are the conversions.

[huntinguy]

The conversion factor is 1mm = 0.0393700787 in

Interesting, I always thought a 9mm was .380 cal.

380
Bullet diameter
 
.355 in (9.0 mm)

I always thought the .380 was a 9mm Short (9mm kurz).

Wonder if you could call the 40 S&W a 10mm Short? 

[TONTO]

 The .380 is 9mm (.355), .38 is .357..........go figure

[Button Nubbs]

Huntinguy,

We don't need to call it 10mm short. Its already called the .40 Short and Weak.

[marlin]

10mm is king! I have all 3.. a .380 that stays in my pocket just as much as my wallet, and a 9mm that is used mostly for plinking, and a g20 10mm that puts a smile on my face every time I pull the trigger! I dont understand why 10mm isnt so popular and .40 short and weak is.. You can load 10 down to .40 power but why? I like the sting in my hand and the BOOM. Get a 10mm, and some doubletap 200gr and go put a smile on your face. I let my buddy shoot my G20 and I think he is going to dump his .45 and get a 10