I put a VX-3I 3.5-40 on my last, a new 1V .243, with good results. Obviously a straight tube wasn’t right for that one. For a 1A or even a B for the use described, a nice 1-6 should do nicely. Recently I had no trouble hitting stuff out to 300 with a 1-6 Triji on my Grendel.
That 1V went down the road as soon as I saw a 6mm Fieldcraft for sale, something I did right for a change.
