I have used Double Tap ammo extensively and have had nothing but good results. Their customer service is great and they make a great product. That load you ordered is one of my personal favorites for the .44 Mag and I have taken a number of animals with it.
+1
I have shot many of their 45 Colt loads and been very happy. Taken only one deer with their ammo but performed as advertised. I know companies like Doubletap and Buffalo Bore could someday be "too big for their britches" but they have continued to do the right thing so far.
Good for them.