What is the Difference?

greywolf67nt

greywolf67nt

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I am a scope virgin and looking at getting some glass for my AR and did not realize it would be this confusing.
There is a Bushnell - 4.5-18x40, 308 BDC Reticle on sale for a good price but then I see off to the side on the page Bushnell AR 4.5-18x40 - Drop Zone 223 Reticle
One says 308 and one says 223. Is there a big difference?
FYI the 308 is $100 cheaper.
Thanks
 
The reticles are calibrated differently. One is for 308 winchester which you will not be firing out of your ar 15. The other is for 223 which is the standard ar 15 round.

Either way you would have to confirm if your bullet choice actually matches either scope. It could be that the 308 reticle ends up being a better match.

Are you planning on shooting factory ammo and if so which one? The boxes will usually tell you the drop expected at different ranges and you can see which reticle matches up better.
 
I am reloading my own mostly but living where I do I shoot what I can get my hands on.
That being said IF I bought the 308 scope once it was zeroed say at 100 yds it would just be a matter of adjusting my point of aim accordingly?
I guess worst case is if I get it for $100 off and it doesn't work out I have access to the EE:cool:
 
If you really want a BDC, get the one that matches the cartridge you are shooting. Getting the wrong one and having to kentucky windage it kinda negates the whole point of a BDC reticle. Besides, past 300m you are going to have to be holding off anyway, due to differences between your ammo and what they used to calibrate the reticle.
Honestly, you'll be better off going MoA or MRad and learning how they work. They aren't difficult and everyone uses them.
 
greywolf67nt said:
I am reloading my own mostly but living where I do I shoot what I can get my hands on.
That being said IF I bought the 308 scope once it was zeroed say at 100 yds it would just be a matter of adjusting my point of aim accordingly?
I guess worst case is if I get it for $100 off and it doesn't work out I have access to the EE:cool:
Click to expand...

It also depends how accurate the shooting should be for you: PRS or hunting, for example? All reticles with bullet drop marks are not 100% accurate. These marks are approximate drop values that change with: different rifles (barrel length, twist rate), different bullet types (BC and weight), temperature, humidity, pressure, elevation, shooting angle, etc. For example, the same rifle, the same altitude, a shooting distance 300m:

1: Conditions: 0C, 1014hPa, 84%, bullet: 168 gr BTHP (.308) - 5.63MOA or 49.1cm drop;
2: Conditions: 20C, 1016hPa, 60%, bullet: 168 gr BTHP (.308) - 5.54MOA or 48.4cm drop;

Same conditions with the same bullet at 500 meters:

1. 13.94MOA or 202.8cm drop;
2. 13.63MOA or 198.2cm drop.

Another thing to take into consideration is that the bullet drop marks in the SFP scopes are only valid at max magnification. This does not apply to FFP scopes. I would choose the reticle that suits your type of shooting. You will be able to determine the approximate bullet drops later using specialized apps or software.
 
greywolf67nt said:
Okay so let's turn this into a "what should I get" thread.
I have the Bushmaster XM15 flat top in 5.56.
Decent scope that won't break the bank?
Click to expand...

Read other threads from this subforum. Every fifth one has the same question and all the same answers. Answer yourself some questions, such as purpose, budget, MOA or MIL, illumination, SFP or FFP and etc. and you will end up with a few models to select from.
 
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