Quarterbore's Forums - What size gas port?

Quarterbore's Forums (http://www.quarterbore.net/forums/index.php)

- 300 Whisper Rifles and Pistols (http://www.quarterbore.net/forums/forumdisplay.php?f=37)

- - What size gas port? (http://www.quarterbore.net/forums/showthread.php?t=1655)

silvery37

01-07-2008 09:59 AM

What size gas port?

I have an 300 whisper AR with a 16'' noveske barrel. I made some loads using accr no 9 and 220 grain matchkings. The action would not fully cycle. I loaded up to a little beyond supersonic with the 220s and the action would still not cycle. The best measurement I could get on the gas port was right around .07. Is this too small or was the powder too fast?

Ron458

01-07-2008 07:42 PM

Is the gas port in the pistol or carbine position? Model 1 in carbine position uses .125 gas port. I am new to the whisper also. Ron

redtazdog

01-07-2008 08:55 PM

Quote:

Originally Posted by silvery37

Reduced power buffer spring may help.
http://www.gunsprings.com/1ndex.html

Pitt300

01-10-2008 08:45 PM

Just got my M1S to cycle reliably w/subsonics by switching to CAR buffer w/original A2 spring.
M1S CAR buffer only $10 & buy CAR spring $3 @ same time in case you need it.
Also shot full load supersonics w/CAR buffer & A2 Spring & I couldn't tell the difference.

All times are GMT -4. The time now is 10:02 AM.