Is it a comp gun? Which .45 has a 13# spring? "Stock" in a 1911 is at least 16, and 17 or 18 might be considered "stock" as well. If you're going to shoot only hot rounds, then consider changing the hammer spring and firing pin stop. A 25# hammer spring and EGW square-edged FP stop will delay unlocking without screwing up the feed cycle unnecessarily. I've been using an EGW stop for a couple of years in my .45, and it's part of the Ace Custom .45 Super conversion. Good move, going to a slower powder - some .45's apparently have trouble getting to hardball velocity levels, at safe pressures, with Bullseye.
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