I have a couple of TX200HC(.177 & .22) and have several Hawke scopes, what is the correct zero range to get the corresponding holdover points on the reticle in 10 yard increments?
On the .22, do I zero at 30 yards at the center of the reticle to yield the holdover point above center as being 20yards followed by 40 and 50 yards for the points below the center of the reticle?
Download the Hawke Ballistic Reticule calculator from here
Just follow the instructions and it will calculate and display all you need.
It is designed for the SR6, SR12 and MAP reticules but I find it is is usefull for calculating aimpoints for just about anything.
Nick Jenkinson advocates zeroing a 11.5fpe +/- .177 airgun at 40yds (SR6).
I have done this, continue to do so, and it works. It gives quite a nice margin for error at typical airgun hunting ranges.
What the hell was that then????
The Hawke BRC has several pre-set reticule and calibre options.
However, you will need to change the "E.D Value" box to the correct ballistic coefficient of the pellet you're using to get a good trajectory match.
The default ED Values do not equate to your average pellets in the respective calibres.
You may well find (as I have) that 7x mag is a better choice for most .22 pellets at 12ftlb, rather than the 6x that is recommended.
Last edited by Fluffybuck; 15-12-2007 at 09:11 PM.
HW100TK.177;Lightstream 4-14x44FFP. HW100TK.22:NVRS-F+doubler. Rapid mk1 .20:Lightstream 4-14x44FFP. SLR98.22:SR6NE 3-12x50IR.
Evo-T.177:SR6 3-12x44. Evo.25:SR6 3-12x44. TXHC.20:Falcon 4-14x44FFP. TXHC.25;WTC 1-5x20.