Shot some magnum blend today.  
I have an 835 with a undertaker hevi shot tube.  The pattern I am getting with the old Remington Hevi shot ( not waingmaster) 3 inch 1 5/8 #5 is pretty good. I get 178 pellets in a ten inch at 40.  I am running very low on these so I need some new stuff.... 
Today I shot  the magnum blend,  3 inch and after a slight adjustment to get the pattern centered, I got 148 pellets in a 10 inch at 40... 
It was 40 degrees out and a slight breeze. 
Now, my question is, how much better will the pattern get when it warms up?  
And, since it is not that impressive of a pattern, shold I wait and try it again when it gets warmer, or should I just go ahead and go to 3 1/2 inch Hevi 13 #6? 
I dont want to shoot 7s so thats out and I cant afford a new choke.... 
Thoughts?