I have only recently got into slinging (a couple of weeks at most) it is an awesome sport! I have cast some lead  and concrete ammo but i find my favourite is still a golf ball. the problem with this is that the golf balls are readily lost in a field. The answer to this was to throw the golf balls between two people, this is pretty safe since you can see it in the air, when you lose sight of it things can get a little scary though

I have a 600mm paracord and leather sling that i use at the moment, this is pretty accurate at 100m throwing sidearm or figure 8, however this is nowhere near the accuracy of a staff sling at this range, as well as asking for input on lobbing golf balls at other people in a field, does anybody have any tips on improving accuracy?

also this pic shows how else you can retrieve golf balls

Hi, sam;
   Welcome.  I also like slinging golf balls. IMO nothing travles farther.  I often loose sight of them when slinging.  Staff slings are a lot of fun to design and use. Nice dog.  I used to have a Lab/Newfoundland mix that looked a lot like that.

most of my practice has been with small stones apx 20 - 30g, i can hit a can at 10m after just a couple of tries but longer ranges are harder, mostly due to the way golf balls curve so much when they have spin! do glandes curve so much off course of they are spinning smoothly? i think it is all the dimples that makes them spin o.O a decent figure 8 throw puts some fair backspin on a golf ball though!

Golf balls are fun but the bendy flight puts me off them. My fave ammo is air dried clay glandes like the ones below:

http://farm3.static.flickr.com/2537/4105556329_41f5813d0e_z.jpgzz=1

You dont have to cast cement, you can make it squidgy enough to roll by hand. You can also carve your shape into two pieces of wood and use them as a press.

You should wear plastic gloves to protect your hands when handling cement, it is caustic. Keep your eyes safe too.

http://slinging.org/index.php?page=fifty-second-bullets---mark-findlay

http://slinging.org/index.php?page=concrete-easter-eggs-look-out-below---nick-ma...

http://slinging.org/index.php?page=making-clay-shot---shawn

General mould making...  It may be a bit labour intensive, but the right mould will cast a thousand times...  Start by making a positive form of what you want out of a good shapeable material (wood, clay, etc...)  Once you have a positive, you need to make a two part mould that you can pour into...  Get some clay and pound it into a form so that there is a nice clean flat side (the bottom of where you are pounding...)  Turn it over so that the flat side is now the upper side and insert the positive form into the middle of it and push the positive form in until it is HALFWAY in.  Carve away any excess clay so that you have a smooth surface that comes just to the mid point of your positive.  WITHOUT DOING IT, the idea is that you could remove the positive without pulling any of the clay away.  Create a few dimples in the outside edges of the clay as alignment dots so that the next few steps will line up.  Form up the outside of the clay form that you have, dust it with talc, and  pour some plaster on top of it to get the portion of actual mould that you are making...  Let the plaster set.  Turn the whole thing over and remove the clay, and you should have a plaster cast of one half of your positive with a few alignment protrusions in it.  Dust with talc or coat with a soap releaser, form the top half,  and pour your plaster to make the top half of your mould.  Let set, and you should have a two piece mould.  Once you take it apart, you can remove the positive form, carve a place to pour your slip, wax, lead, etc...  Bind the two parts together and pour...
Once you have a workable system, you can make 5-10 positives from this mould and make another mould where you can repeat this to have a mass production mould so that you can cast 5-10 at a time.
My explanation is not perfect, and may be difficult to follow, but may give some direction to follow...
Hope that it helps...

no problem i know how to resize before i upload now 

the pole is the first half of a sea fishing rod, its really light, decent handle, does the job really well!