I bought the MTC mamba 4-16X50 to put on my 223 but have held back to try it on 243 when it arrives, I must admit to having doubts about it but after reading diverdaves reply am prepared to give it a whirl, the mamba has the varmint (christmas tree) reticle, I do like mildots....... if it doesn't work out it I'll most likely go for S&B with A7-8 reticle.