I hope ye realise hornady, remington, winchester, federal and cci 17gr v-max are all made in the same factories using all the same components. the only difference is the colour of the bullet.
Could have just been a bad batch. split casings would mean it was effecting the accuracy.
The zero and quality on ammo can vary from each batch. These split casings are obviously a bad batch and you should contact them about it.
I had a casing blow out its end and crack up 5mm from the end of the casing and left me deaf for about a minute on saturday, I emailed CCI and they offered to have the ammo sent back for inspection and they would cover all the costs, refund the ammo with extra ammo so their customer care is clearly good.
The extra price you pay for remmy is purely for the brand name. I pay the same for each here.