M1/quiz/2 groove barrels

[eclancy]

Hi all,
This quiz is about M1 Garand Rifle Barrels. The Standard M1 Garand Barrel has 4 grooves. The question I have is did Ordnance ever make M1 Garand Barrels with two grooves??
I hope that all of you have a Happy Holiday Season.
http://www.garandm1rifle.com
http://www.users.fast.net/~eclancy
Thanks again for taking the time and effort to read and reply to this.
Clancy

 

[musher]

Yeesh. I'm sure I've seen references to a 2 groove barrel produced during WWII in an effort to speed up production. My spotty memory tells me they didn't speed up production enough to matter, so they were not accepted as a general revision to the part. I'm not sure if there were other issues (accuracy, placement of the gas port or whatever) I've got solid references to refresh my memory though.

Edited to add, I've no idea who experimented with this, but if I had to guess it would be SA.

 

[Gewehr98]

2 groove barrels were indeed common...

But on the other Springfield rifle, the 1903A3, as produced by Remington. Smith-Corona 1903A3 rifles, however, had either 6 or 4-groove barrels, often subcontracted by High Standard.

My Remington 1903A4 has a 2-groove barrel. It gives nothing up to it's 4-groove cousins in terms of accuracy.

Unscrupulous gun parts suppliers sold ersatz M1 Garand barrels years ago, which were two-piece affairs, using threaded and sleeved surplus 2-groove 1903A3 barrels. Be careful with those!

 

[eclancy]

Hi all,
The answer to this quiz is as follows:
There were 16 M1 Garand rifles built with 2-groove barrels. Now what is really interesting is that they were built with some M1 Garand rifles using undersize 2-groove barrels, and also M1 Garand barrels with oversized 2-groove barrels. Here's something else these tests were not for speed of production but were done for velocity drops. Yes, I have in these files all the data about the drops. All this testing was going on as late as Aug. 1942.
I hope that all of you have a Happy Holiday Season.
http://www.garandm1rifle.com
http://www.users.fast.net/~eclancy
Thanks again for taking the time and effort to read and reply to this.
Clancy