StrelokPro and second focal plane scopes

[madeintheuk]

Does anyone know if strelock software will correct for holdovers at different magnifications on second focal plane scopes? It would make holdovers and clicking much easier if we could dial it into StrelokPro first, and get a baseline on where to start. I all for shooting and testing, but with ammo prices AND availability right now, it seems more than logical to try and get a ballpark before fine tuning. 

 

[tigerhunter]

I believe it does if you look at the crosshair screen as you change the magnification the ranges change 

 

[ram2jeep]

right from StrelokPro my friend.

 

[M0ist0ne]

What @tigerhunter said, just make sure you have set up the SFP on the scope setup page.

Uncheck FFP and input your min/max/ranging mag

 

[ram2jeep]

Strelok says it in the directions as I have sent you from their website. You can change from FFP to SFP but just like in real world if you zero your SFP at a specific magnification your poi will change if you adjust the magnification. 
If you check off FFP you will need to input your magnification and change it each time you switch magnification and your zero will change with each switch. 
I know this is what your trying to avoid but you would need to zero your rifle at each magnification first and change it in strelok each time you change magnification.

 

[Baldone]

I use a mil dot SFP and leave the scope on 12X it works perfectly.

 

[madeintheuk]

I use a mil dot SFP and leave the scope on 12X it works perfectly.

Defeats the purpose of having adjustable mag don’t you think? Sfp is fine for fixed mag, but I like to be able to dial the mag up and down for different circumstances. May have to look for ffp options 

 

[CoyoteGod]

All SFP scopes have calibrated hold overs. Usually marked with a triangle. Higher end scopes usually have two spots. One somewhere in the high middle range and one at full mag. Sight in using these calibrated areas and your hold overs will be correct. Once you move from these areas your hold overs will be different, but you just need to know that difference on a scope dope. Hold overs can be used at any magnification if you know the changes in POI for the particular magnification. What I do with my powder burners with SFP scopes is sight in at full mag at 200y. Then I will see where the POI is for lowest mag and have that change set in the zero offset feature. On airguns if I am using a SFP I just leave it on the magnification I zeroed the scope at. I am usually never below 8 mag anyway this is never is an issue, but you have to have a good parallax to do this.

 

[Baldone]

I use a mil dot SFP and leave the scope on 12X it works perfectly.

Defeats the purpose of having adjustable mag don’t you think? Sfp is fine for fixed mag, but I like to be able to dial the mag up and down for different circumstances. May have to look for ffp options

I can see that for some, but for how I use the gun it works for me and the way I holdover.

 

[madeintheuk]

All SFP scopes have calibrated hold overs. Usually marked with a triangle. Higher end scopes usually have two spots. One somewhere in the high middle range and one at full mag. Sight in using these calibrated areas and your hold overs will be correct. Once you move from these areas your hold overs will be different, but you just need to know that difference on a scope dope. Hold overs can be used at any magnification if you know the changes in POI for the particular magnification. What I do with my powder burners with SFP scopes is sight in at full mag at 200y. Then I will see where the POI is for lowest mag and have that change set in the zero offset feature. On airguns if I am using a SFP I just leave it on the magnification I zeroed the scope at. I am usually never below 8 mag anyway this is never is an issue, but you have to have a good parallax to do this.

Same argument I had with baldone. I use multiple magnifications very frequently, so the point of having a variable mag scope is useless if I have to leave it on one power. This is the reason I asked the question. I don’t mind putting on the time to figure it all out and make a chart, but I’d rather not waste a ton of ammo doing it. If strelock had this as an option, I could dial it in close, and test it wasting less ammo. 
does anyone know if chairgun does it?

 

[22Jim]

After years of grappling with this FFP vs SFP issue I found a FFP scope with a reticle I like and have never looked back.

In a nutshell if you are a person who uses hold offs to adjust for distance and is constantly changing scope power to fit different conditions than a FFP scope really makes the most sense for you. It is much easier to find a FFP reticle that you like than it is to develop a notebook full of hold overs at every possible power level you will shoot at. It really is a no brainer. 

That said you SFP people have a couple of other options. First learn to click rather than hold off. Once you have a good trajectory chart include clicks as a column from either Strelok or Chairgun. FFP or SFP clicks are always the same regardless of your scope magnification. The important consideration here is having a quality scope that has clean, well defined clicks and will take the constant abuse of the clicking process and still return consistent results. Probably 95% of the WFTF and Open class Field Target shooters use clicking to make their distance corrections. 

The second option is to use your smartphone with Strelok or Chairgun while in the field (or use them to print you trajectory book before hand). In both of these programs if you go to the reticle page for a SFP scopes you can change the magnification of the reticle which will in turn change your hold offs on the displayed reticle. Chairgun actually changes all the underlying data and tables to match the new magnification, while Strelock only changes the data on the reticle display. This will be far quicker than flipping through your trajectory book after settling on a scope power. 

All my references to Strelok are to the Strelok+ version which is what I use,

I personally believe clicking is the best option under almost all situations if you can use it (Hunter class Field Target shooters cannot). Next is a FFP scope because you only deal with one holdover chart, tape it to the side of your scope or rifle and you are good to go. Finally if you are using a SFP scope make a decision to shoot at only one or two magnifications and live with it, you will be much happier,

Jim in Sacramento