| Bitterroot Bulls wrote:|
Well, I didn't mean to start an argument .
Hey, nobody's arguing. It's called "discussing."
I think such discussions are a good thing--it's always good to hear how different people do things and why they do them. And since there's usually more than one way to skin a cat, hearing the pros/cons of both ways help readers make a more informed choice on what they feel will fit them best. Anyway, for more explanation of why I like FFP for this use:
| However, to utilize a reticle with marked distance references, like the Rapid Z, it sure is convenient to adjust the subtensions with the power ring. |
Yes, there's no doubt being able to do that will allow a decent fit of more reticles to more loads so it is more convenient, or adaptable you might say. Of course the most convenient method doesn't necessarily mean it's the best.
| I haven't found it to be disadvantagous to set the power ring in the field.|
Well, I have. There are several disadvantages that come with it. Let me list a few....
If you need to accurately align marks, you need to be out of the shooting position, above the rifle looking down at the scope (with some possible exceptions like the Vortex Viper). So you either need to get out of position when you decide you're going to use the reticle, or decide to put the scope there before you get into position. Not only does this take time, it requires you to take your eyes off the animal.
Old habits die hard. For too many years I've been in the habit of carrying the scope on a low power, then when an animal is spotted at a good distance cranking up the power ring without looking at the rifle, without looking at the scope, without taking my eyes off the animal as I flop into position (be it sitting or prone or whatever). It takes virtually no time and I never take my eyes off the animal. Anything else would be a compromise.
Now there is a way around that using a SFP and I and many others have done this--pick a reticle that fits the load when the scope is on the max power. Naturally, that brings all the same difficulty of matching the reticle and load as FFP. But it does allow you to quickly twist the power ring until it stops without looking at it.
More problems arise when using higher powered scopes. Now all the various reasons some may or may not like to use higher powered scopes could be long debated in a separate thread, but as it pertains to this subject if
you like to use them it brings more problems. While not much of a problem up to about 10X (pretty much any shot far enough you'd want to use a reticle 10X is plenty usable), if the reticle is calibrated for much over that it can be.
Sometimes you really don't want the scope cranked all the way up. In low light conditions, especially if the scope has a small objective, it may give a really dim view and be difficult to use.
If you get into position while the animal is moving or milling about especially amongst a bunch of others, a small FOV can make it difficult to locate it quickly.
Most higher powered scopes will have adjustable parallax, the most common being of the side-focus variety. The degree depends upon the brand, but most of these have a shorter depth of focus at the high powers. So while you can carry one around on 6X for example and simply point and shoot with the FFP, if you need to crank up the power before you use the reticle there's a good chance things will go all blurry on you. So now not only do you need to adjust the power ring to the right spot but you may need to focus on the target. With an identical FFP scope carried around on low power you can simply point and shoot, or if you have time and the disance is far, you can crank up the power and focus without taking your eye out of the scope.
| For instance, I have two slightly different witness marks on my Conquest's power ring for two different elevation/temperatures that I use the same rifle and load to hunt. If you develop a load that matches a FFP reticle, you are restricted not only to that load, but that elevation, temperature, etc.|
It's not quite that simple. While you can compensate somewhat, the reticle will not accurately fit both any more than a FFP will. Drastic changes in conditions (such as hunting at low elevation then hunting at very high elevation) changes the shape of your trajectory curve with respect to distance--it's not proportional. The reticle can't match both. For example, if you have an 800 yd reticle matched perfectly at low elevation, when you go to high elevation your 800 yd line will be dramatically off while your 300 yd line will be nearly unchanged. So if you adjust the power ring to put the 800 yd line back on, your midrange lines will be off. You need to make a best fit compromise. With a FFP you'd simply adjust the zero a couple of clicks and end up with much the same best fit compromise.
The only way to accurately match dramatically different conditions (or different loads for that matter) is a reticle where you're holding the exact correction the same as if you dialed it on the turret. Of course those reticles are the most versatile and accurate, but I don't feel they're as fast for medium ranges.
Anyway, like you said, one is best suited using what works for him and we all have our own likes/dislikes. But hopefully my explanation will give people a better idea of why I like what I do.