Regarding the 6.5cm, it's not a fad. I'm the first guy to jump on the newest caliber bandwagon as I've got burned in the past doing that when I was younger and dumber (6.8spc back in the day). When I bought my 6.5cm it was also my one and only true custom gun so it took a lot of convincing for me to make that change. What ultimately put me over the top was talking with the guys a GA Precision and them saying that they not only build more rifle in 6.5cm than 308, but Hornady also produces more ammunition in 6.5cm than they do 308.
There was a time when the 6.5cm was just for the man bun sporting hipster kid wearing skinny jeans sipping a starbucks. That day has come and gone. In todays world you just have a better option. Imagine the same engine in a full size truck vs a corvette and imagine which one goes through the air better. There's a time and a place for everything, and I still have a 308. There's nothing wrong with a 308 and I'm thoroughly invested in it from dies, lapua brass, multiple rifles etc. The 6.5cm just happens to do everything the 308 does for hunting out to 500 yards, and beyond that you are mathematically more likely to get a hit with a 6.5cm than a 308.
There's no "wrong" answer between a 308 or 6.5. Honestly, if the Daniel Defense Delta 5 had been out when I bought my custom gun I'd have bought one of those with both barrels and been done with it.
There was a time when the 6.5cm was just for the man bun sporting hipster kid wearing skinny jeans sipping a starbucks. That day has come and gone. In todays world you just have a better option. Imagine the same engine in a full size truck vs a corvette and imagine which one goes through the air better. There's a time and a place for everything, and I still have a 308. There's nothing wrong with a 308 and I'm thoroughly invested in it from dies, lapua brass, multiple rifles etc. The 6.5cm just happens to do everything the 308 does for hunting out to 500 yards, and beyond that you are mathematically more likely to get a hit with a 6.5cm than a 308.
There's no "wrong" answer between a 308 or 6.5. Honestly, if the Daniel Defense Delta 5 had been out when I bought my custom gun I'd have bought one of those with both barrels and been done with it.