I’ve had a 7mm STW and currently have a 6.5-300. I’ve shot a lot of game with both....the 6.5-300 has been really easy to load for, gets good speed and accuracy with high BC bullets and kills well. Of the two, I’ve found the 6.5-300 the most forgiving.
I once owned a mod 70 7mm WSM where the side pressure from the extractor caused the case to expand somewhat elliptically, so cases needed to be full length resized each time. If I marked the case and reinserted it in the same position it would chamber ok. Had to send it back for rectification.
My ATN has been faultless but the system has a couple of drawbacks...
One issue I have is the lasting bright rectangle in my scope eye if used too much in the dark. Another issue is the ATN is not good in dusty conditions, image quality drops off dramatically.
My next step will be Thermal.
My favourite 270 has been with me for 38 years, and has fired over 7000 rounds. It’s an
early Rem 700 and under its slight recoil my thumb has worn the checkering off across the tang. Also where my other thumb sits alongside the barrel, the checkering is all but gone. The 270 mightn’t be perfect...