Gun volume audit for .45-70

[ghost]

Summary

SUMMARY: Content "Realistic gun volumes for .45-70"

Purpose of change

Helps #37374.

Describe the solution

Change primarily volume, also weight and magazine tube size if appropriate.

Describe alternatives you've considered

Tonkatsu doing it.

Testing

Loaded ingame.

Additional context

Marlin 1895 SBL, OAL 37", 8lb, and six shots(🤔): https://www.marlinfirearms.com/lever-action/model-1895-big-bore/model-1895sbl
SA: https://imgur.com/a/fBoRGMt
Measuring magazine tube for width: https://imgur.com/a/f7BOhOc
Expanded view to get width(on pg. 13): http://pdf.textfiles.com/manuals/FIREARMS/marlin_336_444_1895.pdf
Width from inside of forearm grip after scaling to magazine tube: https://imgur.com/a/YDNy1t3

Magnum Research BFR, OAL 15"(it's the 7.5" barrel model): https://shopkahrfirearmsgroup.com/copy-of-bfr-30-30-winchester-revolver-stainless-steel/
SA: https://imgur.com/a/06dWYgW
Width using vertical line on cylinder: https://imgur.com/a/WGaZ4RL

1874 Sharps Rifle(Using Uberti 32" barrel Special reproduction), weight 10.625lb from averaging of the stated range of 10.25-11: https://www.uberti-usa.com/1874-sharps-rifle
SA(+OAL of 50" after scaling to barrel length): https://imgur.com/a/Aw48Bzx
Foreend height measurement for getting width: https://imgur.com/a/97l0t1e
Expanded view of rifle for getting width(on pg. 19): https://www.uberti-usa.com/sites/default/files/originals/product-manuals/manual_sharps_1874.pdf
Width obtained from forend after scaling to forend height: https://imgur.com/a/2VhUWI2