I had a 338 edge built with a remingtom 700 long action. I used a Bartlein barrel 30"finished length. Contour was 1.25 for 5" and tapered to .900 at 30". Anyways I got it back from gunsmith and cannot get a reloaded round to chamber properly. I brought a bullet seated to the length suggested with me when I picked it up and it did not work at his shop. The gunsmith stated that I might have to neck turn my rounds. The round was loaded with the 300 gr sierra. I tried when i got home to seat the round deeper and deeper to see if it was too long for the chamber but this made no difference. I can see a ring on the tapering as the round tapers from the casing to the neck. And when I put pressure on an unloaded round to lock the bolt it appears the tapering area is being pushed inwards. I have just used an .338 expander mandrel alone on the 300 ultra case and also used my custom .338/300 ultra resizing die by redding to see if it is me is who having the problem. Is this a finicky round to reload? Thanks.