Well I have three 7stw . I have had one before it was a production rifle or ammo. I have never had problems reaching published data . I have exceeded it with ease . Trick is to match bullet with twist and then the right powder and primer . Yes you can load the 7rm to match factory STW velocity but you can far exceed the 7 Rm with hand loads
Just like the 300 wsm can match 300 win mag but the 300 win can be hand loaded hotter. Barrel length does play a big part. With that said two of my stw have 26" barrels but I have a win with a 24" barrel that will launch a 140 gn nosler bt at 3400 fps in a .420 group and no pressure signs.
I own all the calibers mentioned and handload for all of them . Get what you want you will never be happy if you don't .
