Seriously considering re-barreling my burnt out 338 Lapua to either a 338 Norma magnum or a 338 Norma Improved. I prefer to magazine feed with this rifle and after fighting donuts with the current 338 lapua chambering, going to something where I conceivably wouldn't have to seat the heavies into the neck-shoulder junction sounds like the best way to go. Is this realistic with the 300gr Hybrids and the 285 ELD-M's? My max magazine internal length is 3.750" Don't expect to gain performance over the 338 Lapua with the 338 Norma Improved, but hoping to maintain similar velocities without pushing too hard. Is that a realistic expectation? Also hoping to minimize case growth & trimming with the improved version. Obviously this complicates die acquisition, thinking custom dies, probably from Whidden... Is it worth it going to 338 Norma Ackley?