Quoted:
Sub MOA to .5 MOA is a beater/shooter rifle to you? Chrome lining is not less accurate for practical purposes. If you want .125-.25 MOA then go for a match stainless barrel.
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Umm...Yes.
"Practical purposes" aside, there is one thing you CANNOT do to a chrome-lined barrel, and that's break it in properly.
When you get a chrome-lined barrel, you are STUCK with all the roughness that might be removeable through a regimented break-in period. Why? Because the hard-chrome lining "locks" whatever imperfection there may be into a permanent imperfection.
Case in point, my own SST bull-barreled rifle. When I first got the thing, it shot 3" MOA on the first few rounds while I was breaking it in. As the break-in progressed, it SLOWLY came down to a reasonable MOA. It is now at 1/4"(or less!) MOA because I was able to knock-down the imperfections during the break-in.