Can you believe this big 5-shots group?

[ShootAndHunt]

I usually shoot my Wichester Model 70 in .270 Win using the Winchester Silvertip (the one I used to break in my rifle) or Ballistic Silvertip, and my rifle shoot them very accurately (usually less than 1 inch at 100 Yards). Yesterday I tried the Remington Express Core-Lokt. After 5-shots, I just cannot believe my eyes, the 5 bullet hole are spread all over the target, I have to use a circle of 6 inch in diameter to encircle them, and the POIs are general lower than my original POI. I know that the rifle will shoot different ammo in different accuracies, but could you believe that it could be so picky??? I am expecting a less than 3 inch 5-shots group, but look at what I got, 6 inches!

What is you guys opinion, what is the difference between your best and worst group of your rifle? Let's share the experience. Does a Winchester rifle usually prefer a Winchester ammo while a Remington rifle like a Remington ammo?

Do you guys prefer Boss, or just try different ammo?

 

[Amish_Bill]

A 700p that slings Winchester Premium with the Nosler/Combined technologies plastic-tip bullets like mud from a spoon. Same 700p has put 2 fed GMM in 1 hole.

 

[JohnKSa]

I've got a Model 38 Swedish Mauser that will put the military surplus into less than an inch but makes pie-plate sized groups with Remington factory ammo.

Some guns just like certain ammo and don't like other ammo.