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I have seen the spot on software mentioned think it is about $5 from google play store if you want it on your android or iphone

OR you can use it online by the looks of it ...

Tommy I got mine for on special for $259 through a guy called outdoormad on trademe he normally sells them for $289 he is also doing a deal for the nikon with warne 721 rings for $299 plus shipping
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Finally got rid of the god awful centerpoint AR22 I had on my marlin model 60 and picked up a nikon prostaff 3-9x40 with bdc 150 reticle for .22LR through trademe which I have on layby can't wait to...