I tried this new fangled ammo when it came out a few years back. I was unable to reliably get all the rounds to chamber when I had a full magazine. I love the performance data, and I know there were options to get a new tube mag plug a few years back, but I cannot find that option now for us Winchester owners, unless that was never an option in the first place. I have seen that mentioned in write ups on the new ammo from 3 or 4 years back. First round chambers fine, then after that it goes downhill, and it may take one, or two or more throws of the lever to get the next round to chamber correctly. I've owned my 94 since 1991, when I bought it new. I've never had any issues with any other ammo since i've owned this rifle. I'd really like to dust it off and enjoy this new ammo! HALP!