Handgun scopes are usually referred  to as EER (Extended  Eye Relief) and have longer eye  relief than scout scopes, which  are usually called IER (Intermediate Eye Relief).  Some handgun scopes will work on some scout rifles for some people; many have so much eye relief that they simply can't be mounted on many scout rifles.  The further forward  the  pic rail extends  on your rifle, the more likely you are to find a  scope that can  be used.
I have  long neck and arms, which makes it even more important  to be able  to  push the scope  further forward and also makes the use of handgun scopes pretty much unworkable.  There's really no way to know for sure which combinations will work for you until you have experimented a bit with a few different ones.  Even when you do that, and think you have a  handle on the numbers you need in terms of inches of eye relief and length of pic rail  forward  extension...you then try to compare those real world numbers to published manufacturer's specs...only to find that those numbers are way, way off from reality.  There's no substitute for "try before you buy".
The next best thing is to have a crapload of assorted  rifles to try new scopes on until you  find  The  Perfect Combo.  This solution is expensive...but fun...
