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What is a good .30 cal varmint load ?

What to you is a good ~125 grain .30 cal load that will be good for game smaller than deer ? I will be using a friends .300 mag to deal with coyotes and hogs on his land. He is too busy farming to take them out. The .300 mag is accurate with 180 grain loads for elk and deer, how would it do on coyotes with ~125 grain bullet ? For some reason ( even with handloads ) his gun dosen't like anything lighter than 180 grains. But if you put a heavy bullet in there, it is a tack driver. But it will handle 130, 125, 110, and even 100 grain bullets ! We don't know why but these light loads do pretty good.

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With all the fun finding ammo

With all the fun finding ammo and reloading supplies right now I personally would stick with the 180 gran loads unless you plan on doing something with the pelts of the coyotes. Then I would find another rifle besides a .300 magnum for the job. In my opinion to keep pelt damage to a minimum you shouldn't be shooting anything larger than a .243.

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I should of added in my post

I should of added in my post that quite possibly the reason that your friends .300 Winchester doesn't shoot as well with lighter bullets is the rate of twist of the barrel. Most .300's will have a 1 in 10" or 1 twist for every 10" of barrel. Lighter bullets will need a different twist to stabilize them in flight and if you go all the way down to a 125 grain bullet you may just need a 1 in 20" twist to get them as accurate as the 180 grain bullets.

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