629 Mtn Gun Cylinder Length: 1.705”
M69 L Frame Cylinder Length: 1.670”

Lyman Lists 429421 loaded oal at 1.710" -- nose is very slightly below cyl face on my M69

This is a 355gr WLNGC from the now defunct Beartooth Bullets -- Loaded OAL measured at 1.710
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[Linked Image from photos.imageevent.com]
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The 355gr WLNGC Loaded in M69 cylinder
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[Linked Image from photos.imageevent.com]