Since Unique has been relatively scarce, and BE-86 is listed right next to it on the burn-rate chart, and I was able to score a good deal on some BE-86, and still have some Unique in my stash, I decided to do some load "development" to emulate the Skeeter load using BE-86 (using Starline 44 special brass).
S&W model 29 6" barrel
Used Montana Bullet Works 255 Gr LSWC gas checked
Loaded 7.5 gr Unique.
Per Garmin Xero chrono, 5 shot samples, low 851.3 fps, hi 923.8 fps, average 893 fps
Loaded 7.0 gr BE-86
low 820.9 / hi 845.9 / average 831
Loaded 7.1 gr BE-86
low 817.9 / hi 827.2 / average 822.3 (go figure - but it was shot on a different day, so conditions were not identical)
Loaded 7.2 gr BE-86
low 838.6 / hi 852 / average 846.4 (same day as 7.1 load)
Going to bump my BE-86 loads to 7.3 & 7.4 and test another round
S&W model 29 6" barrel
Used Montana Bullet Works 255 Gr LSWC gas checked
Loaded 7.5 gr Unique.
Per Garmin Xero chrono, 5 shot samples, low 851.3 fps, hi 923.8 fps, average 893 fps
Loaded 7.0 gr BE-86
low 820.9 / hi 845.9 / average 831
Loaded 7.1 gr BE-86
low 817.9 / hi 827.2 / average 822.3 (go figure - but it was shot on a different day, so conditions were not identical)
Loaded 7.2 gr BE-86
low 838.6 / hi 852 / average 846.4 (same day as 7.1 load)
Going to bump my BE-86 loads to 7.3 & 7.4 and test another round