buy a mould from me

Alex. Ich hätte gerne eine. Vor dem Brexit. 😁
https://youtu.be/ExE_y1fro6A

basically make it fairly stiff and just roll it - use gloves !

for a quick egg mould. Get some two part plastic easter eggs. Scoop concrete into moulds and put in eggboxes to dry and set.
https://www.amazon.co.uk/Filler-Fillable-Eggs-Ideal-Scavenger/dp/B078S8RTMM/ref=...

or you could just fill and leave in the plastic to set. should come out fairly easily

I have no tips on concrete. With regards to getting good ammo, I do wonder if it could be economical to buy throwable, smooth beach stones/pebbles in bulk.
Or maybe some people give it away for free if they want to reorganize their garden, as long as you come pick it up.
Maybe even cheaper than clay or concrete ammo.

the problem with stones is that they shatter into sharp hard pieces.
In the uk, unless you can sling in a quarry, there's nowhere safe to use stones.

The clay i use, is not fired, so won't break into sharp edges and will actually dissolve in the rain if left out long enough.

Concrete is similiar, doesn't break into sharp edges.

If you mix shredded newspaper and pva glue into your concrete, and use fine sand you can make it fairly stiff and smooth - almost clay like.
The newspaper will also absorb moisture and stop it drying out to fast, as well as making it more durable to impacts.
Just make sure you wear gloves - lime is not stuff to mess about with !

https://youtu.be/YRUpBPRkItI
Also edited the first post.

joe_meadmaker

yes. mix #1(previous video) and #3 are the best so far
but also I couldn't really judge mix #2 strength because of the wrong treatment the first 24h