Hornady Subsonic .45-70 ammo

[4fifty8]

• brass length 2.042" Hornady shorty brass
• 410gr Sub-X bullet claimed 1075 fps mv 24" barrel
• 20.0gr flake powder charge
• chronographed today ~1200 fps or ~1220 fps mv 22" barrel
• here sonic speed estimated 1080 fps 4000' elevation & 5 Celsius actually supersonic ammo
• groups not too bad from my Traditions Outfitter G2 / Leupold 2.5x20mm
• Sub-X ammo 100 yd POI close to 400gr Buster@1965 fps mv

https://www.hornady.com/ammunition/rifle/45-70-government-gr-sub-x#!/

 

[4fifty8]

Ammo modified

Lower mv at or just above sonic speed groups not too bad from my G2.

 

[4fifty8]

Subsonic ammo off hand accuracy in my Trapdoor Carbine.

 

[Brutus]

Is much more thrifty with cast 405 from Bullet Barn.
Loaded with Trail Boss.
54.99 for twenty factory Hornday: Ouch.