Utah, I have a 1962 243 remington 700 that the bolt handle was factory very similar to yours. My cousin has a similar vintage 7 mag like it also. It is nearly as thin at the knob but not quite as rounded near the bend as you can see in the pics.

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Last edited by 1911a1; 12/22/18.
Figures don't lie, But Liars figure
Assumption is the mother of mistakes