Here is my (admittedly short term) experience of the March 10-60x56 HM compared to the March 5-40x56 scope.
Background
I own a March 1-10x24 and 2.5-25x42 and love both scopes. However,I am looking for a higher magnification optic that will reliably allow me to spot .22 caliber holes in paper at 200 yards. I purchased both these scopes with the intention of choosing the one that best fits my needs, and reselling the other.
Glass
The March 10-60x56 HM has “HighMaster” glass which is supposed to be the best March has to offer. The glass is awesome, but my eyes do not see a difference between the HighMaster glass and the extra-low dispersion glass of the 5-40x56. I’ve spent several afternoons and evenings comparing the glass side-by-side as the sun sets. At 40x, both offer a crystal clear image. To my eye neither scope has an image quality edge over the other. I prefer looking through the 10-60 at 40x as opposed to the higher magnifications. Above 40x the darkening of the image becomes noticeable enough that it sometimes becomes a distraction. The image quality also starts to degrade slightly so that some of the finer details begin to blur. The image is still very good at 50 and 60x and definitely usable at those magnifications, but I catch myself dialing the magnification back down to 40x when shooting because the image is perfect there. The 5-40x does not suffer at its highest levels of magnification and is perfect to my eye throughout its magnification range.
Eyebox
The 5-40x56 has a more generous eyebox and is easier to get a good sight picture on. I don’t know how much bigger the exit pupil on the 5-40 is compared to the 10-60, but it is a big enough difference to be quite noticeable in use.
Reticle
For target shooting, I prefer the fine 3/64 dot of the 10-60. It is a second focal plane reticle and maintains the thin crosshairs and fine aiming dot at all magnifications.
The FML-1 reticle of the 5-40 is a first focal plane reticle. I love the center dot size in the 15-25x magnification ranges, but prefer a more fine dot at higher magnification for target shooting.
Turrets
It is easier to dial the turrets of the 5-40 than the 10-60 because the reference lines are more obvious. When shooting an air rifle at long distances, up to 40 MOA of elevation change can often need to be dialed in. The .1 mil clicks of the 5-40 are much easier to keep track of than the fine ⅛ MOA clicks of the 10-60. The 5-40 also has 15 MOA more adjustment range. I also prefer the lower profile of the turrets on the 5-40. Both scopes have a zero stop option, but I’m more familiar with the simplicity of the zero stops on the 5-40 as they are the same as my other March scopes. The 10-60 requires a small allen wrench to set. In addition, the zero stop has writing on it that contradicts the direction of the turrets (see pic) and has caused me a bit of confusion.
Ranging
I 3D printed a side focus wheel for each scope and collected dope for each out to 100 yards. I then tested using the parallax wheels to range distances and compare them to my laser range finder. Neither scope ever gave me a reading that was more than 1 yard different from my laser rangefinder out to 50 yards. I suspect even those small errors were caused by estimation mistakes on my part or misaligned numbers on my printed side wheel.
Conclusion:
I think the 5-40x56 is the better scope. It’s advantages are that it is shorter, weighs less, has lower profile turrets, can be dialed down to 5x magnification, has an easier to use zero stop, more adjustment range and larger exit pupil. It has glass just as good as the 10-60x56 HM, and ranges equally well. However, it will be the scope I am going to sell.
The 10-60x56 better fits my needs because of it’s more target shooting friendly reticle. Since I am never in a hurry to dial in my elevation and windage, I actually prefer the finer ⅛ MOA click adjustments the 10-60x56 HM offers. I also have 2 other MOA scopes and am more familiar with dialing in MOA as opposed to mil. I don’t get any benefit from the first focal plane reticle of the 5-40x56. Although I find the more generous eyebox a big plus on the 5-40x56, it does not trump the more useful reticle and finer clicks available on the 10-60x56 HM for benchrest use
Background
I own a March 1-10x24 and 2.5-25x42 and love both scopes. However,I am looking for a higher magnification optic that will reliably allow me to spot .22 caliber holes in paper at 200 yards. I purchased both these scopes with the intention of choosing the one that best fits my needs, and reselling the other.
Glass
The March 10-60x56 HM has “HighMaster” glass which is supposed to be the best March has to offer. The glass is awesome, but my eyes do not see a difference between the HighMaster glass and the extra-low dispersion glass of the 5-40x56. I’ve spent several afternoons and evenings comparing the glass side-by-side as the sun sets. At 40x, both offer a crystal clear image. To my eye neither scope has an image quality edge over the other. I prefer looking through the 10-60 at 40x as opposed to the higher magnifications. Above 40x the darkening of the image becomes noticeable enough that it sometimes becomes a distraction. The image quality also starts to degrade slightly so that some of the finer details begin to blur. The image is still very good at 50 and 60x and definitely usable at those magnifications, but I catch myself dialing the magnification back down to 40x when shooting because the image is perfect there. The 5-40x does not suffer at its highest levels of magnification and is perfect to my eye throughout its magnification range.
Eyebox
The 5-40x56 has a more generous eyebox and is easier to get a good sight picture on. I don’t know how much bigger the exit pupil on the 5-40 is compared to the 10-60, but it is a big enough difference to be quite noticeable in use.
Reticle
For target shooting, I prefer the fine 3/64 dot of the 10-60. It is a second focal plane reticle and maintains the thin crosshairs and fine aiming dot at all magnifications.
The FML-1 reticle of the 5-40 is a first focal plane reticle. I love the center dot size in the 15-25x magnification ranges, but prefer a more fine dot at higher magnification for target shooting.
Turrets
It is easier to dial the turrets of the 5-40 than the 10-60 because the reference lines are more obvious. When shooting an air rifle at long distances, up to 40 MOA of elevation change can often need to be dialed in. The .1 mil clicks of the 5-40 are much easier to keep track of than the fine ⅛ MOA clicks of the 10-60. The 5-40 also has 15 MOA more adjustment range. I also prefer the lower profile of the turrets on the 5-40. Both scopes have a zero stop option, but I’m more familiar with the simplicity of the zero stops on the 5-40 as they are the same as my other March scopes. The 10-60 requires a small allen wrench to set. In addition, the zero stop has writing on it that contradicts the direction of the turrets (see pic) and has caused me a bit of confusion.
Ranging
I 3D printed a side focus wheel for each scope and collected dope for each out to 100 yards. I then tested using the parallax wheels to range distances and compare them to my laser range finder. Neither scope ever gave me a reading that was more than 1 yard different from my laser rangefinder out to 50 yards. I suspect even those small errors were caused by estimation mistakes on my part or misaligned numbers on my printed side wheel.
Conclusion:
I think the 5-40x56 is the better scope. It’s advantages are that it is shorter, weighs less, has lower profile turrets, can be dialed down to 5x magnification, has an easier to use zero stop, more adjustment range and larger exit pupil. It has glass just as good as the 10-60x56 HM, and ranges equally well. However, it will be the scope I am going to sell.
The 10-60x56 better fits my needs because of it’s more target shooting friendly reticle. Since I am never in a hurry to dial in my elevation and windage, I actually prefer the finer ⅛ MOA click adjustments the 10-60x56 HM offers. I also have 2 other MOA scopes and am more familiar with dialing in MOA as opposed to mil. I don’t get any benefit from the first focal plane reticle of the 5-40x56. Although I find the more generous eyebox a big plus on the 5-40x56, it does not trump the more useful reticle and finer clicks available on the 10-60x56 HM for benchrest use