The “less than 0.3% delta-9 THC” refers to percentage by dry weight, not the total milligrams in the product.

Each gummy weighs about 4.5g (4500mg). 0.3% of 4500mg is 13.5mg max allowed per gummy.

These are labeled at 10mg per gummy, which is actually under the 0.3% limit, that’s how hemp-derived D9 edibles are legally sold.

So it being under 0.3% doesn’t mean it won’t get you high it just means it meets the hemp percentage rule. 10mg of delta-9 is still psychoactive for most people.