Barrage of Expendables — ruling 1

Barrage of Expendables deals the damage, not the sacrificed creature. Notably, that creature having deathtouch or lifelink provides no additional benefit.

Barrage of Expendables — ruling 2

Because targets are chosen before costs are paid, it is possible to choose a creature as the target of the ability and then sacrifice that creature. The ability won't resolve when it tries to resolve and no damage will be dealt.

Barrage of Expendables : règles, fonctionnement et interactions (MTG)

Barrage of Expendables is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

, Sacrifice a creature: This enchantment deals 1 damage to any target.

How it works : Barrage of Expendables

Original English text — Wizards of the Coast / Scryfall

#1July 1, 2013· Wizards of the Coast
Barrage of Expendables deals the damage, not the sacrificed creature. Notably, that creature having deathtouch or lifelink provides no additional benefit.
No other card is named in this ruling.
#2July 1, 2013· Wizards of the Coast
Because targets are chosen before costs are paid, it is possible to choose a creature as the target of the ability and then sacrifice that creature. The ability won't resolve when it tries to resolve and no damage will be dealt.
No other card is named in this ruling.