Picture of the day

The DH Mosquito was also fitted with a 57 mm cannon in the Mark XVIII

Silly English, zet iz not big enough. You must put zee 75mm Kanone in das Flugzeug!

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Load 'er up:

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The Henschel HS129B. Racy looking bird, but big/tall guys need not apply for pilot gigs:

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Note the location of the gunsight. No room for it inside.

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Scary to think about having to get out of that quickly. Guess you end up where the plane does, no matter what. And in the event of an abrupt cessation of forward movement, your forehead will be checking the ability of the windscreen to withstand sudden blows. And v.v.
 
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Probably reposts but...

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37mm Infantry gun in use by US troops here. Direct fire HE to shoot infantry onto the objective. Questionable use, with a practical range of only a few hundred metres, I would rather dedicated grenade men and rifle grenades, at least they can bayonet up and charge once they run out of grenades.
 
37mm Infantry gun in use by US troops here. Direct fire HE to shoot infantry onto the objective. Questionable use, with a practical range of only a few hundred metres, I would rather dedicated grenade men and rifle grenades, at least they can bayonet up and charge once they run out of grenades.

According to the U. S. Army's Basic Field Manual FM 23-75, 37-MM Gun, M1916, dated 1940 the maximum range is 4000 yards (3657.6 m)(2.3 miles) and the maximum effective range is 1000 yards (914.4 m)(.6 miles). That is just a little further than a hand grenade or rifle grenade can be thrown or launched.
 
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Strange things begin happening when you have a very heavy, large-bore projectile and not a heck of a lot of velocity. For one thing, they punch through a lot of air without slowing down a huge amount.

Note carefully that the Hatcher Scale rates the .455 at 74 even though that 265-grain bullet is only moving about 630 ft/sec..... and the "much hotter" .45 ACP comes in at 72 despite its 230-grain slug going 200 ft/sec faster.

That silly little Hotchkiss gun throws a 1-pound high-explosive shell quite accurately. I have both the Hotchkiss round and the Maxim Pom-Pom 1-pounder in my collection and I would not want to stand in front of either one! The Pom-Pom, you will remember, was notorious in the hands of the Boers for taking out entire artillery crews with a single burst.

That said, I would expect the photographs shown, especially the smaller one, to have been taken for propaganda purposes in a relatively-safe location. Photographers took a lot of time to train and were NOT readily-expendable. I rather expect that Fritz would have found the chappie taking the smaller photo to be an irresistible target for a scoped Gew. 98.
 
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SMELLIE has the round, I have the Manual, but mine is dated 1916 - an original one. Interesting technical drawings and such. While it is man portable, there were also wheels so that it could be towed by horse or soldiers. There was an ammunition limber too.
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