wtf,there is no legal requirements for you to have your DSC1 for a 243.
if you are a memebr of basc then ring them up and get them to help you with it,if you read the home office guide lines then you will see that your flo is being a c*ck.
BASC will help you gain your 243 providing you have land to shoot it on and you meet all the home office requirements for the 243
what i did was go and pay for some stalking like i did and i got a letter to shoot some 3900acres of land,i put this in with my application and got .22/223/243 and a 308 all in one go.
if you need to know more then leave