I' m firstly going to say that it' s probably your ammunition, if the gun is putting the bullets on top of eachother at 50yrds, I' m assuming you mean one snowman?, but you get terrible groups at 100yrds, look very closely at the holes at both ranges, and move out to 125yrds and back to 75yrds, if you can out to 150-175-200yrds, you' ll be able to see bullet tumble if it is, but you may not be able to notice it if you don' t test a couple different ranges, when it' s fully keyholed, I' m pretty sure you' ll notice it. Get some 150grainers, no reason to need 180' s, and certain gun makes (rifling rate) won' t stabilize them properly.

I won' t say it isn' t your flinching, and I won' t say that it isn' t just your rifle, or just your rifling rate, but I' ve had bad experiences with certain guns and 180gr bullets, and I' ve had many more bad experiences with Rem. Core-locts. I' d say first try switching ammunition to at least a lighter bullet, if not a different make, then do the flinch test that several have mentioned above, Man is it funny when someone flinches the dickens off a rifle when they dry-fire one, but at least you find out you have a problem, it' s hard to see a flinch under recoil sometimes.

Thanks for all the good advice. I went out this weekend and bought a bench rest and some different brands of ammo in the 150 gr. By the end of my shooting session I was putting together 2" groupings. I ended up making some adjustments to my scope also.

Next question, should I be dead on bulls eye at 100 yds or do I want to be a little high. I hunt in the thick woods of missouri. A long shot for me will probably be no more that 150 yds.

Thanks again for all the good advice.

Fishn,
Glad things worked out, sounds like you tried the easy fixes first and that is the best way to do it. These problems are seldom as complicated as people can make them sound.
100 yard sight in sounds right for you.
That will put you 1" or so high at 150 and back to 0 at 200 and and a couple inches low at 250. These are approximates, check your actual rise and drop at the range if you can.