Joan,
You High Fence Pavement Pounding Hussy...you REALLY "get after it"! Congratulations?!?
400yds is a LONG ways,I've never even seen a 223AI before(or heard of one) and I'm unfamiliar with an 88.
That's what Rimfires are for...and you better fire up your GoogleFu. LAUGHING!
Bless your heart.
Hint................