My 2 cents,
Had an IOR 3-18 on a Tikka T3 Tactical .308, around 3 years ago, bought the scope new, looked solid, good glass quality.
After 20 shots, black particles started showing around the crosshairs, accuracy went down, 5 shots later, the scope was done (never got dropped or rough treatment) . I sent it back to IOR/Valdada, no question asked, easy people to deal with and they sent me a new one. As I was waiting for the new scope to arrive, went shooting with few friends; one of them just got a new IOR, his scope went down after 30 rounds of .308. Later on, he switched to Vortex, then to USO.
When my new IOR arrived, I sold the Tikka/IOR and got a Sako TRG/S&B PMII, no more issue.
Many people are happy with their IOR but they are not as "bulletproof" as one could think. Anything mechanical is subject to failure but some products are more prone to do so than others. If you shoot at the range, it ruins your day; in other situations...it really sucks.
I shoot with S&B, NF, Leupold and original Russian PU, thousands of rounds in all, so far so good.
Just my own experience, nothing against IOR/Valdada but I won't get another one. It could be that their new products are now more reliable. Other shooters probably had issues with other brands, no doubts about it; as I say, anything mechanical is subject to failure.
Good shooting.
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