@ 10:54 pm (GMT)
Olivier ROUVIEREHi to all
Any opinion about Dual reticle (SFP + FFP) ?
@ 05:44 pm (GMT)
Re: Dual ReticleThe primary advantage of FFP is that analog ranging (i.e., range estimation using the hash marks on the reticle) is possible at all magnification settings, because the reticle shrinks and grows with the target image. With SFP, the hash marks are only accurate at the highest magnification. If you dont use a rangefinder, and want to estimate range with the scope set at less than full magnification, FFP makes sense. But in order for analog ranging to work, you have to know the dimensions of the target. Here in the US, mature pronghorn bucks are all pretty much all the same size, so analog ranging could work. But mature whitetail deer vary widely in size, so it wouldnt work well.
The FFP hash marks could also be used for elevation hold over, and wind, at all magnifications. But the scoped is equipped with exposed turrets. Might as well dial them. The downside of FFP reticles is theyre useless at low magnification. They pretty much disappear. Thats why the scope has an illuminated red dot in the center of the reticle.
Depending on the magnification, the reticle is an FFP, or red dot, sandwiched in a German SFP reticle.
@ 05:29 pm (GMT)
Re: Dual ReticleHi Scott
Thanks for the interesting comments on the FFP.
I'm exclusively a hunter and use a rangefinder in action, so it makes sense to stick to the KISS rule and Nathan Books recommendations by opting for the lighter SFP model (30mm tube).
@ 08:00 pm (GMT)
Re: Dual ReticleThe March is a one of a kind scope... truly unique... and expensive.
However, it's still a very ambitious scope design - I'd bet good money that a Sightron SIII will optically outperform it. That's not a knock on March - I'm a March owner and really like what they do. That's the reality of cramming a 10x erector ratio into a small optic.
For an FFP alternative to the Sightron offering that isn't as much as the March FX or F 3-24x52, you might consider the Vortex Razor HD LHT 4.5-22x50. It's one of very few FFP offerings out there boasting 4 inches of eye relief, capped windage, locking elevation, and moderate weight (22 ounces). The downside being that it's capped at 11 mils of come up once the zero stop is set. You can use the reticle to hold elevation, but that's not my preference. Of course, 11 mrad will still get you past 1000 yds with a 20" .308 Win, so I've got no issues with only 11 mrad.
I shoot primarily FFP scopes. I dial elevation and hold wind. There is something to be said for the "what you see is what you get" nature of FFP; that's KISS for me as a shooter - I never need to worry about magnification setting or messing up a wind hold because I miscalculated it. I check the chart, verify the conditions, hold, shoot.
@ 08:27 pm (GMT)
Re: Dual ReticleHi.
A small note on the Vortex LHT. - I just don't use the zero stop ring, and in stead remember how many revolutions from the bottom up I'm zeroed at (1,5 rev on the current set up). On a tilted rail or a rifle that zeroes naturally low, I can dial way past the transsonic range on any top load in most cartridges. Likewise, on the Zeiss HT 3-12x56, which only has 12 mil total travel, I've pulled out the zero stop pin, made second turn markings on the turret ring, and mounted it on a 20 moa rail. That way I get over 10 mil from that meager starting point, which goes a long way with a top load in 7 rem mag.