grain of bullet

[mrshananagans]

if i sighted in my gun with 180 grain bullets is that gonna affect my aim if i decide to shoot 165 grain bullets.

[ROY-alty33]

it wont affect your aim but it will most defiantly affect your point of impact. Site in with the rounds you are hunting with.

[Mr. Dean]

Like he said. ^

[Steeleco]

My .06 shoots 180's one inch lower and one inch to the right as compared to my 165 load. But I only know this by practicing and shooting them both on the same target. Your's may be close enough to not be an issue too, but until you quantify the differences, you need to test them.

[RBH]

Not only does the weight (grains) of bullet affect point of impact, but difft brands of bullet may shoot to different points of impact, even if loaded with same weight of bullet. As said, sight in with what you are going to hunt with // hunt with what you sighted in.

[hoochie]

just to add my 2 cents...
if you change bullets, it might even land left or right.. they wont shoot centered anymore. like these guys said, sight in with what you want to use. changing bullets means re-zeroing.

[Jagermeister]

I don't believe that there will be a difference in lateral movement when changing from one bullet weight to another if you consider the rest of equation. Meaning that you use the same powder charge and the same primer, just exchanging bullet weight.
If there is one thing that will cause lateral deviation, that will be wind force and vector. The lighter bullet will be subject to greater deviation caused by wind vectors that come from the side.
There would be horizontal deviation (point of impact) because of the force of gravity.
It is interesting to note that if you load 270, 7mm, 280 cartridges with a given charge and sight in with a bullet of specific weight, you can change the bullet weight and still be within 2" of POI. This cannot be done with any other caliber except the 375 H&H.

[Barracuda]

point of impact can go up down left or right regardless of caliber .

[Ruger4]

know your bullets , know your ballistics and record it...........
I shoot 100 grainers in my 243, my daughter shoots 70 grainers out of the same rifle, we know the zeros with both bullets, range time

[250 sav]

I've seen point of impact change up to 9" between 165 + 150 gr. in a 30 06. ALWAYS sight in the ones you use.

[mrhappygolucky]

winchester power point 30-06 180 grain shoots the same as federal premium 180 nosler partition if this helps at all (100yrds). federal blue box will drop almost 3 inches for the same grain but lower quality ammo

[835]

winchester power point 30-06 180 grain shoots the same as federal premium 180 nosler partition if this helps at all (100yrds). federal blue box will drop almost 3 inches for the same grain but lower quality ammo

In your rifle.
You have to assume his rifle will be different again.

[r106]

Not only does the weight (grains) of bullet affect point of impact, but difft brands of bullet may shoot to different points of impact, even if loaded with same weight of bullet. As said, sight in with what you are going to hunt with // hunt with what you sighted in.

^^ I agree 100%




winchester power point 30-06 180 grain shoots the same as federal premium 180
nosler partition if this helps at all (100yrds). federal blue box will drop
almost 3 inches for the same grain but lower quality
ammo



Every rifle is different. With some rifles POI does't change much between certaim ammo. Other rifles shooting the same ammo it can be drasticly different.

So like everyone has said sight in with the ammo your going to be hunting with.

[mrhappygolucky]

Ok yes that is very true...that was for a sako a7....and yes i totaly agree u must sight in for the particular ammo you are using.

[Singleshotneeded]

Sight in with 165 grainers unless you're going for grizz...you'll have to get to the range if you switch to 180s.
The 168 grain TTSX in the Barnes Vor-tex ammo will handle anything, though you might want to go 180 for grizz.

[REMINGTON JIM]

if i sighted in my gun with 180 grain bullets is that gonna affect my aim if i decide to shoot 165 grain bullets.

Like all the other guys have said - you need to resight with the diff bullet weight - i have seen diff bullet weights be as much as 6 " off - could be high -low or what ever always re shoot your rifle when changing brands an or weights !