Vortex PST 2 durability

[Twtxga]

Wanted to see what the hive mind thinks about Vortex PST 2 durability.

I have a V4 4-16 on my primary hunting rifle and got a great deal on a PST 2 3-15 I have on my back up gun. Im okay with the extra weight but have heard about failures with PSTs.

Both on 300 win mags.

Thanks