I have posted here before and had great results so here we go again. I have a win mod 70 in a 270wsm. Everything has been done to this thing except for action and barrel both were new. I finally settled on a load with retumbo and a 140 Nosler accubond. Good speed and good groups at a hundred. I went out today to shoot 2&3 hundred. I was struggling with 200 yard groups, it was a little windy and my shooting rest is a piece of junk. I went back to a hundred and all was good so I shot one shell at 200 and it was where I needed it and moved to 300 and that was ok. So was I just having a bad day and getting frustrated or is that possible? Do most of you use bags or rests? I am thinking about getting bags cause my rest sucks.