Tell me about the 243 ammo, bullet weight, brand etc. I have a Pentax Ultimate Zoom 3-15x50 electronic zoom scope. Brand new in box never used. There are reviews online, some good some bad but I've had one mounted on an AR for over 10 years and all I've ever had to do was change the batteries. They make a little noise in sub freezing temps (I think the lube gets stiff inside) but other than that flawless performance from the one I have mounted. Aquire your target on 3 and push the button zoom to 15.
https://www.bhphotovideo.com/c/product/666013-REG/Pentax_89747_Ultimate_Zoom_3_15x50_Riflescope.html
https://www.bhphotovideo.com/c/product/666013-REG/Pentax_89747_Ultimate_Zoom_3_15x50_Riflescope.html