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Info on breaking in a new Remington SPS700 in .223

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Unread 01-23-2011, 03:03 PM
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Join Date: Feb 2010
Posts: 412
Re: Info on breaking in a new Remington SPS700 in .223


It's not "crow oil" but Kroil oil. It's a very fine penetrating oil that many benchrest shooters use for break in and cleaning. Comes in a orange can and definitely great stuff. It's made in Tennessee. Break in is tedious and time consuming, but it's worth effort. Check out 6mmBR forum. Good luck!
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Unread 01-23-2011, 04:38 PM
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Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,132
Re: Info on breaking in a new Remington SPS700 in .223

You can check the twist rate using your cleaning rod, and bore brush. You put the rod w/ bore brush about 2 inches into the barrel. Make a witness mark on the rod at the handle so that you can track it as it spins. Also make a mark as close to the action or barrel depending on which end you put the rod. Push the rod in and let your witness mark at the handle make a full rotation as you push the rod slowly down the barrel. When it makes on full rotation, make a second mark at the action or barrel and remove the rod. Take a tape measure and measure between the 2 marks. This will be a close determination of the barrel twist rate.

The slower the twist rate (1:14, 1:12), the lighter bullet you have to shoot. The faster the twist rate (1:7, 1:8, 1:9), the heavier the bullet you can use. For 1K shooting, a 1:8 or 1:7 twist is what you want. You won't get that in a factory tube. I think a 1:9 is the fastest you can get that I'm aware of. Savage offers a 1:7 in 223 in their LRPV varmint model 12.

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