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Originally Posted by Quarterbore
I am curious if you have looked at some of the other variables...
Have you tried other powder combinations? With the 300 Whisper in a semi-auto the problem isn't the velocity of the bullet but instead the amount of gas that is left to cycle the action. It may be that the powder you are using just doesn't have enough Ooommpp to cycle things...
Also, are you using this with a Rifle or CAR stock?
What buffer are you using (ESP if it is a CAR - Std, H-Buffer 9mm)
Have you considered modifying the buffer spring a little to take off some of the weight?
I would try other powder combos first but there are a couple other areas that could be changed in this system if needed...
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QB,
I haven't thought about the buffer spring untill you mentioned it. I'm running my 300 whisper upper with a full length rifle stock/tube. I don't have a CAR lower but a buddy has an m4gery that I could borrow his lower to see if that helps at all. I would be interested to see if jripper is also running with a full length rifle buffer.
--Chris
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