I dont know about ABPOS but I learned a bunch, Thank you all. I have 3 carbines and 2 of them run well and feed anything I put in the mag including the speer varmiter bullet 110 gr flat point . The third is my latest and the nicest , a Winchester, it gives some feeding and ejection problem so far but now that I have some useful info to start with, I think it ill come around.
Thanks again all.
John
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