Denys, can you still see the MTR-2 reticle during periods of heavy mirage?I do not have a March 2.5-25X either the 42mm or 52mm. I do have a 1.5-15X42 and a 5-50X56 as well as a 10-60X56 HM. What they have in common, apart from being March SFP riflescopes, is the reticle; the MTR-5. I use the high mag scopes for F-class competition and the 1.5-15X42 is more of an all-purpose riflescope.
When I got my first March-X the 5-50X56, it came with the MTR-2 reticle. That was about 10 years ago. I used it to good effect for 7 years of competition until I realized that I could no longer see the central dot or even the wings at time. I had reached my mid-60s and my eyesight had diminished. March swapped out the MTR-2 for an MTR-5 and it was perfect for me.
The MTR-2 is an awesome design but it's really thin, which is fantastic for the high magnification, high-precision game. For hunting, I would suggest you look at the MTR-5. Or the MTR-3 or -4.