Give that you hit the target there is an almost 100% chance that you will lose no pellets. I recommend that you get an adult or someone above 15 to cut the lid in step 3 as this can be very hard and dangerous. By the way this is my first Instructable so be nice :)
Step 1: Gather the Materials.
1.Biscuit tin(preferably square)
2.Something sharp ie. a knife or a scissors(a knife being preferred) I used a blade from a multi purpose tool.
4.Duct tape or masking tape
5.Paper or card, if you use card make sure your gun can shoot through it.
6.A drill is useful for starting the cutting by giving the blade a hole to start from. Although not necesary i seriously reccomend using one. Again, have an adult do this part.
Step 2: Marking the Square to Cut Out for the Target.
1.What you're aiming for
2.Marking the points for the sides of the square.
3.Joning the dots to form a full square.
4.BTW make sure you leave some space outside the square so that your pellets won't fall out
Step 3: Cutting the Lid
Step 4: Finishing the Target
2.Tape the target to the inside of the lid.
4.I taped this inside to prevent the pellets from bouncing back. It also lets the pellets fall to the bottom letting you take them out easily.
5.The original target i made
6.I used this a LOT!!!!