Gun(and one magazine) volume audit for 9x18 and 7.62x25

[ghost]

Summary

SUMMARY: Content "Realistic gun volumes for Russian pistol calibers"

Purpose of change

Helps #37374.

Describe the solution

Changing volume based on ImageJ calculations.

Describe alternatives you've considered

Tonkatsu doing it.

Testing

TBD.

Additional context

Makarov PM, OAL 16.15cm and width 3.05cm: https://www.makarov.ch/index.php/home/index/en
Removing shadows for binarization: https://imgur.com/a/9z568Iu
SA: https://imgur.com/a/aSNWk4j

Skorpion vz. 82: Has equal OAL/width to the vz. 61(http://pdf.textfiles.com/manuals/FIREARMS/czskorpion.pdf, page 16), which was already audited in #37637. No change required.

Tokarev TT-33, OAL 19.5cm: http://www.smallarmssurvey.org/fileadmin/docs/weapons/SAS-weapons-pistols-Tokarev-TT-33.pdf
SA: https://imgur.com/a/8FkBVjM
Exploded view for width measurement: https://www.americanrifleman.org/articles/2014/8/1/exploded-view-the-tokarev-pistol/
Width after scaling to OAL, matching front sight to vertical line from midpoint of slide width: https://imgur.com/a/NTOEl7T

PPSh-41, OAL 82.8cm: http://www.ppsh41.com/
High-resolution picture for SA calculation: http://www.a-human-right.com/ppsh.html
Magazine removal: https://imgur.com/a/Qy4gMOz
SA: https://imgur.com/a/IKyyWGQ
Measurement of barrel shroud width for obtaining gun width: https://imgur.com/a/ZrjbY9f
Gun width: https://imgur.com/a/mMjdPrS

Throwing in a magazine audit:
Diameter of drum: https://imgur.com/a/4VQH0US
Depth of drum: https://imgur.com/a/BgzdFBY
Volume of cylinder = pi x R^2 x H = pi x (D/2)^2 x H