Most bullets, powder, primers and powder all habe to be imported from either the US or Europe.
There is a little war going on where they are using as much ammo in a few minutes as most of us on SD combined will shoot in a year.
We have also removed ourselves from all the major free trade areas. Supposedly we are tarriff free, but HMRC still charge processing fees on all goods coming through, together with storage fees if goods take a few months to clear. Most now use an import clearing agent even from mainland Europe and that costs a few percentage points.
Then you have to add on the costs of money. Funds are tied up for several months whilst goods are in transit. Typical Trade finance runs at about 2% per month.
Solutions - rather than whining about the cost
1) get your MPs to push government to get back into proper single markets
2) stop the Ukrainian war
3) set up UK production.
4) use your bullets wisely. Use a bullet that maximises meat yeald and process your own venison and barter it with friends and family.
5) if you have larger amounts then collaborate with other stalkers and set up your own marketing. A haunch of Roe is selling for £40 to £50 in local butchers in Edinburgh