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Posted: 12/26/2003 9:26:24 AM EDT
What is the twist rate for the XM177E2?  Did it have a chrome lined barrel?

Scott
Link Posted: 12/26/2003 9:40:34 AM EDT
Twist = 1 in 12"

Chrome chamber and bore = Yes
Link Posted: 12/26/2003 6:52:23 PM EDT

Amazing to note that at that twist rate, with the 11.5 inch barrel, the bullet would not even complete one complete revolution before exiting the muzzle. I guess I should be happy my preban XM177E2 forgery has an 11.5" 1-in-9 twist, at least I get one turn!
Link Posted: 12/29/2003 4:53:06 AM EDT
Originally Posted By _DR:

Amazing to note that at that twist rate, with the 11.5 inch barrel, the bullet would not even complete one complete revolution before exiting the muzzle. I guess I should be happy my preban XM177E2 forgery has an 11.5" 1-in-9 twist, at least I get one turn!
View Quote


I don't know. My XM177 wannabe was built from an SP1 carbine, using the original 1in 12 barrel. Shoots good 53-55 grain handloads into less than 2MOA.  What more could a guy want[:D]
Link Posted: 12/29/2003 6:17:50 AM EDT
[Last Edit: 12/29/2003 6:18:49 AM EDT by _DR]
I'm sure its fine. I was just musing at the ballistic particulars. It was effective enough in Southeast Asia in the '60s and '70s that all the SOG and SF units were clamoring for them!I love mine, I would go back to all original specs if I could,even so far as to include the original "moderator".

I just need to register it as an SBR and then pay my FFA tax stamp for the moderator. I like the idea of a historically accurate rifle, even if it does not actually date back to the period.
Link Posted: 12/29/2003 6:58:04 AM EDT
I in 12 is very accurate and was designed to do a good job on VC. The Red Cross and others complained enough that the terminal balistics had to be toned down, hence bullet spin got change, nothing to do with more accuracy.
Jack.
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