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Old 04-19-2018, 07:46 PM
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DWalt DWalt is online now
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Quote:
Originally Posted by ClarkMag View Post
I have the 1950, 1951, and 1957 550-1 rifles.
The 1957 has tip off grooves.
I tell people this is the semi auto version of the bee hive Remingtons.
The half chamber allows them to reliably cycle CCI CB shorts that sound like a BB gun.
The older two have 4 pound springs are better for this than the newer one with a 5 pound spring.
I test fired some standard velocity .22 Shorts in mine, but no CBs. Even the SV shorts are fairly quiet and function OK.

The floating chamber provides more impulse to the bolt when .22 Shorts are used. It really doesn't do anything when firing Longs or LRs as those function on blowback. During WWII there were full sized .22 MGs made up using the Williams floating chamber and used for training purposes. Probably not many of them were made as I have never seen one, just read about them.
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