Original Post — Direct link

When you do your first run after the weekly reset, you have a 10% chance to drop a weapon.

With every run you don't get a drop, your chance increases by +10%.

When you get a drop, your chance resets to 10%.

That way if you are super unlucky you will get a guaranteed drop after 10 runs (100% chance), but you can also be super lucky and get 10 drops in 10 runs.

We need more bad luck protection in more areas of the game Bungie. Pure RNG sucks, when will you finally understand that?

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almost 6 years ago - /u/Cozmo23 - Direct link

So the good news is we are making the drop rates increase each completion you don't get a drop until you have a guaranteed chance for a weapon to drop. It won't be the exact percentages you called out, but will work in a similar manner.

We will also be adding most of the weapons to the loot pool of Gambit Prime to increase the ways you can earn Season of the Drifter weapons. Most weapons will have a chance to drop at the end of Gambit Prime matches and the drop chances will also increase each match you don't get a drop. Gnawing Hunger, Just In Case, and Doomsday will remain as exclusive drops in the Reckoning.

You can read the official post here, these changes are currently scheduled to deploy next week in 2.2.1.