Bullet Drop Compensator Help, please

[j-man]

I'm an optics newb and looking for some assistance. I'm thinking about picking up a scope for my 10/22. The one I'm looking at has a bullet drop compensator calibrated for a 223 55gr bullet. Given that I'm going to be shooting a substantially lighter 22 cal round, what effect, if any, will this have? If I zero the scope at a given range for a given load, will I even notice a difference?

As you can tell, I've never used a BDC so am out to lunch. Any and all help appreciated. Thanks.

 

[gushulak]

BDC's work with a single load at known speed. Using a .22 rifle with a .223 BDC? Won't even be in the same ballpark.

I use a BDC on a Leupold M3LR Mil-Dot scope. Its calibrated for a 168gr. bullet at 2650fps or by changing the turrent I can use a 175gr. bullet at 2700fps.

To put it in layman's terms.

.223 is a laser beam, a .22 is a huge arch with not alot of distance.

Do a search on BDC's for the lowdown, there is much info out there on them, but the basic principle is they work on one designated load, that's where all the ballistic holdoff's come from and are built into the scope for quick targeting at various ranges.

 

[636andy636]

Either get a scope with a .22 BDC turret or find a balistics chart and find out how much drop your ammo will have at X range and how many clicks it will take to go to that range. Say a 50 yard zero, but you want to shoot 100 yards. Say it takes 10 clicks up to get it dead on at 100 yards. Just keep count of your clicks so you can return to zero with out having to re zero sight it in again

On my 17hmr I could get a sweet 17 scope, or use my exissting scope and a balistics chart for 17 grain and 20 grain ammo and use that to dial in instead of spending money on a scope thats known to be iffy