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Discussion Starter · #1 ·
I have a savage .223 26" bbl varmint and handload some 40gr. nosler for it. I shoot 100 yard tight groups. but after the 4th shot they start to walk in a line away from the center of the target. What causes this?
I also did the same w/ 55gr and 53gr.
 

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Yep. Agree with Huntswithdogs. Savage "free floats" their barrels, but sometimes not enough. If you take a one dollar bill and slide it between the barrel and stock, you should be able to slide that dollar all the way to the base of the the stock. If it binds up, that'll be your trouble spot. As the barrel heats with repeated firings, the metal swells, just enough to touch the stock. This changes the vibration of the barrel, hense throwing the shot off. Usually some sanding will relieve the pressure. But don't go nuts with the file.
 
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