I've read in more than one book that original Sherman's had a 75mm gun which was found to be inadequate & was soon replaced w/ the 3" gun.
It was even reflected in some 70's era tactical wargames.
One in particular, as I recall, was 'Tank' published by SPI around 1973, I believe.
I also don't believe that he Sherman was ready to go in 1941.
Weren't we still supplying the Grant/Lee to the brits in 1942?

--------------------------------------------
On Tue, 6/16/15, Greg Chalik <mrg3105@gmail.com> wrote:

 Subject: Re: [TML] Question
 To: "tml@simplelists.com" <tml@simplelists.com>
 Date: Tuesday, June 16, 2015, 8:51 PM

 On 17 June 2015 at 11:54,
 Phil Pugliese (via tml list) <nobody@simplelists.com>
 wrote:
 17pdr
 gun

 ​The M4 did
 not have a wimpy 75mm gun in 1941.
 The Ordnance
 QF 17pdr ​wasn't available until 1943.
 Integrating a
 new weapon into an existing tank design is not what most
 engineers would advise since the costs can be quite
 prohibitive.
 The thinking
 in the US was that the the M26 was going to be ready
 'any day now', which didn't happen.
 The thinking
 in the UK was that the Centurion 'universal' tank
 wasn't going to be ready in time, so a LIMITED
 conversion program was a reasonable accounting risk.
 Israelis faced
 the same choice in the 50s when converting the same Shermans
 to the M50/51 spec.

 Greg

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