I don't think I could say not knowing what the use is. If it is a hunting rifle, deer ect, I'd go with the 6x in a fixed power scope. Actually in a fixed power for hunting I would go down to a 4x for the wider field of view you'd get and probably a bit better eye relief. My own view of a 243 is that of a preditor and varmit rifle. With that in mind, I have a 3-9 power on my own. Your other choice sounds like a variable,10-40 and sounds like it will require higher rings. Then 10x on the small side is gonna change eye relief quite a bit, high rings will put your head higher on the stock and at 10x, you may have a problem picking up animals, especially at close range, not a whole lot of field of view at closer ranges.
Your screen name and the prices listed on the Schmidt-Bender seem to indicate you might be from Europe. Where are you from?
Hi again. I just went back and looked thru the site you posted. I see the 10-40X scope and notice parlex side adjustment and turret's. That speaks of a very long range use. If that is the case, you'd probably be better off with it than either Schmidt-Bender. I have a scope of similar design, Nikon 4 1/2-14 with side adjustment and turret's. I got it to shoot long range target's with my 6.5x06. Unfortunately the only reticule I could get when I got it is the last reticule I'd concider. Not that reticule would not even be a concideration, Nikon BDC, terrible. On a long range scope I'd prefer fine crosswires. Gives you more precise aiming than the thicker reticule. And I would concider what the windage and elevation adjustment is. 1/4" is fine for a hunting rifle but for a long range setup, I'd rather have 1/8". At 500yds, my 1/4" adjustment moves impact 1 1/4"; 1/8" is gonna cut that in half, in my view, better adjustment.
Ok. That is obviously a European sporting goods site. I'm guessing either Germany or Austria or maybe Denmark? I was in Germany in the service and took a trip to Denmark. Beautiful country. Especially liked it way down south in Germany. If you have some, a few photo's of the country would be nice.
One of the most important components of deciphering a new hunting area is distinguishing between the summer and winter ranges for the game that you plan to pursue. Without knowing this you cannot make reliable assumptions about where the game will be come opening day. Knowing these areas will allow you to take the current weather (as well as the past couple weeks) and apply that to the landscape and make an educated guess as to where you might find that big buck or bull.
There are a couple ways...