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I load mostly target bullets, but I have saw regular hunting bullets shot from some of my rifles get really unstable out past 400. Would shoot good @ 400 then get wild. For the same token, I had a rifle that would shoot hunting bullets into a horrible group at 400 and actually settle down @ 500 yards. I sold that rifle. It was a 270wsm xbolt. I believe that in certain circumstances bullets can destabilize at certain distances even when you have adequate twist for the bullet. I have my opinions why this may happen, over deformation of bullet due to barrel condition, bullet construction itself way out of concentric balance, etc.... Probably to many what ifs to list. I don't spend alot of time trouble shooting like I used to. Now days I am pretty quick to move on.Hey guys, so I have browning stainless stalker in 300 WSM topped with a Leupold VX-5hd and shooting 180 grain trophy grade accubonds. I have a 100 yard zero and chornographed the speed im shooting. Im also using a gunwerks br2500 to get my elevation dials, and it worked perfect out to 400 or so yards where it was still holding MOA.
The issue is when I tried to take it out to 650, I spray painted a large rock about 3 feet by 3 feet orange and set up on it, made my dial and took aim slowly squeezing the trigger, each time I shot id raise my head to see a puff of smoke drifting in the wind near the rock thinking I made a hit..
Well after about 10 rounds I drove to my target to see I didn't make contact a single time! I hit ALL around it tho but could not even touch a 3ft by 3 ft target..
I also had another shooter with me who was also making Moa size hits at 400 yards with the rifle and they too had the same results as me at the 650 range..
Does this sound like a shooter issue or is it possible for the rifle to open it groups up that big over an extra 250 yards?
Thanks for any input.
Tommy