I have recently bought a rifle in 338 Lapua Mag so I have just started into ELR. I am wondering how critical reloading techniques are for ELR. I have been reloading for 1000yds for many years and used standard Redding dies. Is it necessary to buy a seater similar to the Wilson seater along with the K&M Precision Arbor Press with Standard Force Measurement Ram? How critical are sizing dies; any recommendations? I have bought Petersen brass; is it necessary to skim or neck turn? I have also bought Sierra 250 and 300gr MK bullets to test.