[cottontop]

Could a H&R handi rifle single shot in .223 be bored out to .225 Winchester? Would anything have to be altered as we would be going from a rimless to a semi rimmed cartridge?It seems to me the rimmed case of the .225 would solve the occasional extraction problem, and besides, the .225 is an excellent cartridge.
cottontop

[Hairtrigger]

It may be more cost effective to have H&R make you a barrel chambered in 225 (they still do this?) then sell your 223 barrel
the 225 win is a GREAT choice of calibers!