W7APD
Welcome to the forum , and by all means don;t let the long throat scare you , my .223 bull barrel shoots very well .
Read the FAQs if you haven't yet , they are a wealth of info on these great little rifles . The Win. White Box ammo is the gold standard for the handi so by all means pick up some and you will be pleasently suprised how good it shoots .
If you reload it can get even better , but that is hard to do . The 1 in 12 twist barrels don't seam to like the heavy bullets so start with the 45 to 55 grain stuff and if you got lucky and got one of the 1 in 9 twist , it will even eat the 65 and 70 grain well .