Situation: Friend (Al, doesn't reload) bought a new Tikka TX3 .270. I reload his rifle ammo, another friend does his pistol and .223. I've reloaded .270 (3 of them) for about 30+ years. Unfortunately Al bought a box of Hornady 130 GMX (all copper) rather than the Sierra's or Nosler's I normally load. Found powder data without problem, but want to ask you guys about OAL. Measured the OAL using Horn gauge. Due to magazine length, I'm not going to be able to get close to the throat. Images of loaded Horn ammo show the grooves covered. Question is: Can I load these out past the "crimp-bearing surface" grooves to at least attempt to get close to the throat? Anybody loaded these in .270? Results? Thanks in advance.