Chappo wrote:What’s the point of a bdc or mildot on a sfp?
Please educate someone who’s only ever used sfp plain / plex reticles.
Just considering the options for a new scope......
Chappo wrote:Yeah I get how they work but on a sfp scope you can only use them at set magnifications.
As soon as you dial up or down they are no longer accurate.
Maybe like scj said, learn your holdovers on the most commonly used magnifications only?
Seems harder than using a plain reticle to me.
SCJ429 wrote:Perhaps for shooters that find it impossible to dial the adjustment you would know the hold over value at commonly used magnifications such as 25x and 12x. For me I would just use them for references when holding off.
For me the FFP sucks when adjusting the magnification as the reticals goes from too heavy to too fine especially when using it in low light conditions.
bladeracer wrote:SCJ429 wrote:Perhaps for shooters that find it impossible to dial the adjustment you would know the hold over value at commonly used magnifications such as 25x and 12x. For me I would just use them for references when holding off.
For me the FFP sucks when adjusting the magnification as the reticals goes from too heavy to too fine especially when using it in low light conditions.
My neighbour bought a pair of Athlon's recently, one SFP and one FFP. The FFP is virtually useless for field work for me as the reticle is invisible at low-magnification against any background other than a paper target. At higher-magnification it becomes usable, but I think it's designed primarily for punching paper. The SFP is more useful.
Kel wrote:bladeracer wrote:SCJ429 wrote:Perhaps for shooters that find it impossible to dial the adjustment you would know the hold over value at commonly used magnifications such as 25x and 12x. For me I would just use them for references when holding off.
For me the FFP sucks when adjusting the magnification as the reticals goes from too heavy to too fine especially when using it in low light conditions.
My neighbour bought a pair of Athlon's recently, one SFP and one FFP. The FFP is virtually useless for field work for me as the reticle is invisible at low-magnification against any background other than a paper target. At higher-magnification it becomes usable, but I think it's designed primarily for punching paper. The SFP is more useful.
That's probably a good case for an illuminated reticle on the FFP.
bladeracer wrote:Kel wrote:
That's probably a good case for an illuminated reticle on the FFP.
Perhaps, but the reticle is so incredibly fine I'm not sure it'd help.
I'm not a fan of illuminated reticles though.
DropBear wrote:Some manufacturers have taken it a step further with the SFP scopes and they use the fact that the BDC value varies with magnification to make the range marks work with numerous calibres and ammunition performance variables at different zoom values. Zeiss for example have a phone app that tells you what power to set your scope to using the ballistic variables specific to your load data and environmental conditions and then gives you impact distance for each marker on the reticle (e.g. RZ800 reticle).
bladeracer wrote:DropBear wrote:Some manufacturers have taken it a step further with the SFP scopes and they use the fact that the BDC value varies with magnification to make the range marks work with numerous calibres and ammunition performance variables at different zoom values. Zeiss for example have a phone app that tells you what power to set your scope to using the ballistic variables specific to your load data and environmental conditions and then gives you impact distance for each marker on the reticle (e.g. RZ800 reticle).
You can calculate your reticle differences through the range of magnification with any scope, you don't need the manufacturer to build one specially to allow that.
DropBear wrote:That's a great point. Straightforward when you know the base subtension values for the reticle - such as those in standard MIL and MOA values. It gets a little more complicated with the BDC reticles like the Zeiss RZ800 etc when manufacturers don't publish the subtension for the holdover markings on their reticles.