Last night whilst out foxing with another SDF member I had a good example of why you need top end glass.
My .243 has at present has a v cheap XC 6-24x56 30mm scope on it , Dave has a 8x56 Swarvi on his rifle.
Anyway we came across a newly cut field of grass which was alive with foxs its 250 yds long anyway getting into position to get on the fox when Dave sees a superb roe buck walking in the shaddows along the bottom hedge row. its about 10 pm so the light is going.
Shoot the f.... thing says D but i can't see it. Eventually I get on it but I can see sod all through the scope. D wants to shot it and I say no anyway we have a 5 min commentary on it as I strugle to get a clear sight on it. I resort to swapping rifles and well major revelation as I can see the buck well enough to shoot, but despite all attempts to stop it it disappears through the next hedge.
Never mind we can catch up with him another day but will need to swap scopes by the.
Anyway we did get 3 foxs out of the field later on thermal was a great help.