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So the line of sight is 2.11" above the bore. Barrel length is 22". Shiny new Heym Express Rifle Ordered ~ June 2016. Mfgr date stamp Jan 2017 (Then took them till now to find suitable lumber for it - worth the wait. Its nice lumber!!) The average velocity was 2540 +/- 9fps measured over 16 shots using a Lab Radar Chrony placed ~ 8" directly to the right of the muzzle. The shooting was done yesterday, Feb 4th at the Oshawa Ontario gun Club..... No idea of height above sea level, nor barometric pressure.... It was cold but not damn cold like today!!!! I don't own the JBM Ballistics program. Load data is as follows: Norma Brass - new not sized, however a Sinclair primer pocket uniformer was used to prep each piece of brass Fed 215M Primer H4895. 86.2 grains. Harrell Powder measure settings: 152.0 0/3 Culvers. Each powder charge was dropped using a Harrell long powder drop tube OAL = 3.472" Neck Dia = 0.4780 Case Length = 2.792 Light crimp into the crimp ring. And the usual squinty print: This load data did not exhibit signs of excessive pressure in MY rifle HOWEVER it may NOT be safe in your rifle! Use this load data at your own risk. |