RE: accuracy vs inexpensive ammo
CoreLokts are fine for deer, I've killed about 85 with them out of my .243...
If you are a marginal rifle shot the easiest way to see what the gun will do is to have a better shot see how it groups for them...Two inches inside 100 yards will kill deer just fine...Another ammo you might try is the Federal Premium 130gr Sierra GameKing SPBT...My brother and his son have killed 50 or so with this ammo but it is running about $35 a box currently...
Two moreoptions are the Winchester PowerPoint 130gr loading, and the Federal Classic 130gr Speer HotCore...They bothrun around $18-20 a box...
You certainly don't have to buy expensive ammo to get good accuracy and kill deer...I'd rather hunt with a guy that shot a couple of cheap boxes a year getting ready than a guy that didn't want to practice because he was blowing 2 bucks everytime he pulled the trigger...