An adjustable objective question?

I've done exactly that. I think the power you have the scope set for will affect the "depth of field" if you want to call it that. If you had a 4-12 and set it at 4X at 100-150 yards you should be OK. When using these scopes at higher magnification at the range you will notice the out of focus thing happens much more readily and you would adjust the objective then and there for the best sight picture. Would you have the time to do that hunting? For gophers maybe. For deer? You could be at 30 yards one minute and 200 yards shortly after. Stand hunting, still hunting or pushing? I tend to go fixed focus for hunting (exception is coyotes) and AO for range. AO is also a good way to get a better optic on a 22 and then dial it back to 50 yards or less.
If memory serves I think I read somewhere that setting an AO scope on infinity would work at all ranges but admit I have not tried that. I will have to give that a try next time out for coyotes as I have an AO on that rifle. Again, a benefit if you have the time on a long shot with a good rest.
 
snomad said:
I've done exactly that. I think the power you have the scope set for will affect the "depth of field" if you want to call it that. If you had a 4-12 and set it at 4X at 100-150 yards you should be OK. When using these scopes at higher magnification at the range you will notice the out of focus thing happens much more readily and you would adjust the objective then and there for the best sight picture. Would you have the time to do that hunting? For gophers maybe. For deer? You could be at 30 yards one minute and 200 yards shortly after. Stand hunting, still hunting or pushing? I tend to go fixed focus for hunting (exception is coyotes) and AO for range. AO is also a good way to get a better optic on a 22 and then dial it back to 50 yards or less.
If memory serves I think I read somewhere that setting an AO scope on infinity would work at all ranges but admit I have not tried that. I will have to give that a try next time out for coyotes as I have an AO on that rifle. Again, a benefit if you have the time on a long shot with a good rest.
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Good advice. I avoid AO unless the need is there.

When you set them on infinity, you simply get focus for long range. It will make it really bad up close (say inside 200 yards).
 
I've got a bushnell elite 3200 4-12x40AO that i bought new on a whim and never used.I'm picking up a .243 soon for a deer/coyote combo gun and have been debating wether to put the 4-12 on or swap it for a non AO scope.my other deer rifles have 3-9's and 2-7's on them.I may just go with the AO on the .243 and set it around 100-150 and be done with it.
 
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