How much weight difference is allowed in coins?

Specifically an Eisenhower Dollar.
I have a 1971-s uncirculated 40% silver dollar that weighs 24.0 grams
I have a 1971-s proof 40% silver dollar that weighs 24.7 grams.
They are supposed to weigh 24,59 grams. My scale seems to be accurate due to weighing some copper-nickel eisenhower dollars that all weighed 22.7 grams.
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Comments
Good question.
Clad dollar = 22.68 gms +/- 0.907 gms
40% silver clad = 24.59 gms +/- 0.984 gms
Your 40% dollars fall within the tolerance.
What @Oldhoopster said.
What @Jimnight said.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
What @PerryHall said.
Very little but what they said
11.5$ Southern Dollars, The little “Big Easy” set
It can vary by coin type and metal. There was more tolerance (I believe) in early copper as opposed to silver or gold.
I believe you mean less tolerance. The more valuable the metal, the closer the tolerances.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
I meant more variation, but your point is correct.
Thanks for the info. i am surprised at how much tolerance is allowed.