ysrracer Posted September 30, 2020 Share Posted September 30, 2020 Here's a couple of chrono reports using 3.4gr of Titegroup. One is using 158gr Berry's flat point (plated), and the other is 160gr Bayou round nose (coated). Even thought the oal's are different, they're loaded to the same depth in the cartridge. Shot thru my five inch 627 Name: .38 Short Colt: 158 Berry's Flat Point: Titegroup 3.4gr: OAL 1.125 Notes: S&W 627 5" Shots: 7 Average: 770 ft/s SD: 13 ft/s Min: 752 ft/s Max: 785 ft/s Spread: 33 ft/s Power Factor Average: 121 Power Factor Low: 118 Power Factor High: 124 Barometric Pressure: 30 in Hg Temperature: 75 F Weight: 158.0 gr. Powder: Titegroup 3.4gr Bullet: Berry's 158gr FP C.O.A.L.: 1.125 Primer: Fed SPP Case: Starline Link to comment Share on other sites More sharing options...
ysrracer Posted September 30, 2020 Author Share Posted September 30, 2020 Name: .38 Short Colt: 160gr Bayou RN: Titegroup 3.4gr: OAL 1.20 Notes: S&W 627 5" Shots: 16 Average: 828 ft/s SD: 16 ft/s Min: 796 ft/s Max: 868 ft/s Spread: 72 ft/s Power Factor Average: 132 Power Factor Low: 127 Power Factor High: 138 Barometric Pressure: 30 in Hg Temperature: 75 F Weight: 160.0 gr. Powder: Titegroup 3.4gr Bullet: Bayou 160gr RN C.O.A.L.: 1.20 Primer: Fed SPP Case: Starline Link to comment Share on other sites More sharing options...
ysrracer Posted September 30, 2020 Author Share Posted September 30, 2020 (edited) As you can see, the coated bullets chrono'd faster than the plated, at least in my gun. ymmv . Edited September 30, 2020 by ysrracer Link to comment Share on other sites More sharing options...
Fishbreath Posted October 1, 2020 Share Posted October 1, 2020 Thanks! Useful stuff, as I plan to work through my stock of Berry's in favor of something coated. Link to comment Share on other sites More sharing options...
ysrracer Posted October 1, 2020 Author Share Posted October 1, 2020 In my (limited) experience with coated bullets, they always chrono faster than plated bullets. For some reason my 627 always needs 2/10ths of a grain more than any other gun to get the same velocity. As always, consult a reloading manual before you start working up loads. Don't take anonymous information on the internet, especially from ex mini bike racers Link to comment Share on other sites More sharing options...
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