I had Mile high build me a 270win with a 1:8 throated for the 170 EOL a few years ago. Shoots great! Here’s the issue as I see it. When I tried to get load data from the bullet manufacturers they couldn’t give it to me. They are all SAAMI controlled. As such, they were not able to do any ballistics testing with the 170 EOL or the 165 ABLR or any other available LR Bullets as the SAAMI spec for 270 twist is 1:10 (which won’t stabilize high BC long Bullets) and cartridge dimensions are also limited by the spec. The advantage to the 6.8 Western is now the 270 guys can get ballistics data for LR Bullets. For me this is essential because the energy I can generate with my custom 270win allows me to carry 1800ft lbs out to over 600 yds. Many feel that 1800 is the limit for taking an elk humanely. That can be argued with bullet placement by precision shooters like me, but nevertheless having SAAMI data for .277 LR loads will be very beneficial. It gives an option for the very large 270 win crowd to get more involved in LR precision shooting with increased energy to boot for hunting, and that’s a good thing.