Hi BahamaLure - nice work shooting in the low temps with wind - I prefer less than perfect conditions! I will tolerate heavy rain and near freezing conditons - keeps the range nice and quiet and the "battle rifle" does not mind! The subject lip looks like a high protruding front plate in the mag body - you could choose to file that out of the way - this action may have been executed when in service - or try small bend as advised. Either way it should feed and cycle when home. These were built for FMJ tho and they will cycle better. I also stay away from steel case, PMC make affordable reloadable brass. Sometimes I have to settle for soft points and accept slow purposefull loading - lead is a PITA to clean off your ramp! You coud also pick up an aftermarket 10 round box othe internet and enjoy fitting and tweaking that instead - then preserve the original box - especially if numbers matching to the rifle -orignal Ishapore mags seem to run 60 -80 around my parts. I enjoyed my Ishapore enormously - definatley a rifle to take for a walk in the woods - no worries about ruining its looks! Your next Enfields can be lookers with stamps, features and history. You will likely get a lot of interest in the Ishapore at the range, I trade turns with range colleagues and have gotten to shoot K98s, M1s and the like in turn for a go on the "Enfield"