My chronograph is a magnettospeed and I am not knowledgeable on how to make it work with tube feed rifles, darn it. (Yeh, I know Dirt Farmer and MDhave a set up to do such a thing with their magnetospeed chronographs.)I wish I had bought the Labradar unit. However, a fellow member sent me a spreadsheet with this load on it:
Bullet Make Powder Charge wt. Load Density Case Primer OAL Ave. S.D. Eff. fps/gr. Accuracy Source
RCBS 348-200 H 4198 27.0 42% Win CCI 250 1,721 63.74 100yds. 1.5" Big Bore Rifles and Cartridges / Wolfe
So according to this the velocity is close to 1,721 fps
Last edited by Bugger; 10/12/22.
