Hi
The positioning you have indicated for Guernsey's outdoor fullbore rifle range is out by some miles.
A more accurate location would be 49degrees 30' 22.60" N and 2degrees 31' 03.02" W an area known as Fort Le Marchant.
In this area there is a fullbore range with designated points at 300, 500 and 600yrds. There are also shorter ranges but these are not used. Rifles used are single action 7.62mm target rifles. This range is used throughout the summer by the Guernsey Rifle Club Fullbore section and also the Cadet element of Elizabeth College.