Never owned one, but I see the PE57 and 510-4’s (.308) regularly at the range and I’ve tried them a few times.
It seem to be a rifle some love and others hate.
It’s loved for the ‘look’, sights, manufacturing quality, precision, reliability and gentle recoil.
It’s hated for the weight, ‘look’, weight, over engineered, weight, overrated precision, weight and because it’s rather heavy.
Personally I believe the PE57 doesn’t live up to its reputation of precision. It’s caliber, sights and manufacturing quality give it excellent precision but not exceptional. The Swiss military seem to agree … when they issued requirements for the successor they wanted the precision at 300m to be equal to the Stgw.57. It turned out the Stgw.90’s precision wasn’t equal but better.
"Now, now my good man, this is no time to be making enemies."
- Voltaire on his deathbed, in response to a priest who asked him to renounce Satan -