With this perk and 10 Strength, you can carry up to 300 lbs. before becoming overencumbered.
In Fallout: New Vegas with the add-on Honest Hearts, this perk allows you to bring 100 lbs. of equipment with you through a dialog check with Jed Masterson.
In Fallout: New Vegas with the add-on Lonesome Road, when combined with a Strength of 10, Burden to Bear, the NCR Courier duster and the Hoarder trait, you can achieve a carrying weight of 400 pounds.
Lionheart
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With each level of this perk, you can carry an additional 50 lbs. of equipment.
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