In a large skillet over medium high heat melt 2 tbsp of butter.
Add shrimp and season with garlic powder. Cook until pink about 3-5 minutes total. Remove from heat and allow to cool about 10 minutes.
Chop chives and celery. Take cooled shrimp and rough chop into large pieces, 2-3 per shrimp.
Melt 4 tbsp of butter.
In a large bowl add shrimp, chives and celery. Season with salt, pepper, garlic powder, old bay, and celery salt.
Squeeze in juice of lemon and add melted butter, mayo, and tabasco.
Stir until just combined. Taste and adjust seasoning as needed.
Wipe out the skillet you cooked the shrimp in, and melt remaining butter over medium heat.
Toast buns until lightly browned.
Divide shrimp salad into rolls and serve immediately.