Steyr LG110

[bnlakeside]

May be interesting buy probably frustrating. The gun is simply not designed for that. The velocity drop between 80 and 100 yards will be huge so it'll droop and any slight breeze will blow it off.
Even taking a .22LR out to that range is limiting. Subsonic ammo is best but is slow. Faster ammo means it'll go subsonic before the target and tumble.
But good luck - you don't know unless you try!

[Jimmy two dogs]

There's no doubt the right pellets will travel 100yds. Having access to some sheltered lakes I will in quite weather attempt to drop a few pellets at a chosen spot at measured distances. A mil dot scope is a great tool for assessing the right hold over/ windage drift. Within a very short time the splashes tell you that your going to be able to be consistent or not. It's very satisfying to chop down a chosen reed stem at long ranges. If you get a chance to try this out be aware that your going to have a high percentage of ricochets. Keep it safe.