Hmmmmmm,
The 222 will reach out and touch and do well at the 300 yd mark...if you can shoot well enough to connect properly.
W'/the 222 there is no good reason to not get enough practice. There are two cartridges that I have never heard of the barrel being shot out. 1 is the 222 the other is the 375 H&H.
I've recently discovered the 40 gr Vmax and reliant's 10X powder. Turned my 50s vintage 222 into a new rifle, yea a Hornet.