Hello folks, I need your advise on modifying the bolt to allow for inserting the full magazine when the bolt is closed. Currently, if the bolt is closed I can insert an XCR mag with 9 rounds and it will lock in place and would function properly. However, if add the 10th round and try to insert the mag (with the bolt closed) it won't lock in place insert and won't feed. It appears that that without the 10th round the mag has a room to compress the spring when the top round is pushed against the bottom of the bolt. But there is no room if the mag is full. I have tried to machine the bottom of the bolt on one side to make room for the 10th round but I am afraid that I am doing this incorrectly. I can now lock the full magazine in place but I am not able to open the bolt (the machined grove at the bottom of the bolt is rubbing against the dummy cartridges and chews them up) Any suggestions? How do you address this issue (or you just insert the mags with the open bolts?)
Please see the pic below