I've used Varget, 4064, 3031, H335 and a few others. Finally I just went with H335 for all 223 loads (40 and 55 gr BTs, 65 gr Sierra GKs, and 64 gr Nosler BSB). If I had no H335, I'd probably try Benchmark.
I did have bridging with the stick powders. H335 pours like water.
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