Dennis, the last Ruger I bought is a GP-100 .357 mag. I slugged the bore AND the cylinder throats, finding that both were .358. So I was lucky. I size my lead boolits to .359 they fit fine at that diameter.
As for expected accuracy, 243 W said it right, you should expect 2-3 inch groups off a rest from a good tight .357 mag @ 25 yards. Slightly better groups with jacketed bullets. My tired old eyes can't shoot that good anymore, I'm happy with 3-4 inch groups.
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The more people I meet, the more I love my dog
They're going to get their butts kicked over there this election. How come people can't spell and use words correctly?
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