It does sound like a timing issue associated to improper gas. If this is an 18” Satern barrel they are notorious for having over sized gas ports. It is difficult to determine if a rifle is under gassed or over gassed because the symptoms can be the same. It is entirely possible the Satern barrel is over gassed and the Faxon is under gassed but both are behaving the same.
The mag springs in the E-Lander mags are very stout and I doubt they are the problem. I would double check the gas block alignment on the faxon barrel and make sure the gas block is centered over the gas port. It is a good idea to measure the gas port to check if it is the proper size. A an easy way to measure the gas port is with small drill bits and find one that fits or is close. It has happened with manufacturers have drilled the wrong size gas port in barrels whether to small or to large.
If the barrel is an 18” Satern many find the best solution to get them to function is an adjustable gas block. Specfic information on barrel length, gas port location (carbine, midlength, intermediate or rifle length) helps forum member figure out potential issues.
http://bulletin.accurateshooter.com/2014...artridges/
There is a mod to the ejector which improves feeding. The ejector can cause failure to feed where the case head will not properly seat on the breach face during the feeding cycle. It won’t hurt to do this mod and at least your eliminating one potential cause.
Try to modify one component at a time. Systematically eliminate potential problems. If you have a 5.56/223 mag they will usually feed two or three 6.5 Grendel cartridges. If the 6.5 Grendel AR-15’s won’t feed two or three cartridges it usually isn’t a mag problem.
The mag springs in the E-Lander mags are very stout and I doubt they are the problem. I would double check the gas block alignment on the faxon barrel and make sure the gas block is centered over the gas port. It is a good idea to measure the gas port to check if it is the proper size. A an easy way to measure the gas port is with small drill bits and find one that fits or is close. It has happened with manufacturers have drilled the wrong size gas port in barrels whether to small or to large.
If the barrel is an 18” Satern many find the best solution to get them to function is an adjustable gas block. Specfic information on barrel length, gas port location (carbine, midlength, intermediate or rifle length) helps forum member figure out potential issues.
http://bulletin.accurateshooter.com/2014...artridges/
There is a mod to the ejector which improves feeding. The ejector can cause failure to feed where the case head will not properly seat on the breach face during the feeding cycle. It won’t hurt to do this mod and at least your eliminating one potential cause.
Try to modify one component at a time. Systematically eliminate potential problems. If you have a 5.56/223 mag they will usually feed two or three 6.5 Grendel cartridges. If the 6.5 Grendel AR-15’s won’t feed two or three cartridges it usually isn’t a mag problem.