Fishing reports and lake information for Minnesota, Michigan, Wisconsin, Illinois, Ohio, Indiana, North Dakota and South Dakota

bullet trajectory of 270

Sort posts by date: Descending Ascending

Original Post:

Dbrockman
Dbrockman
Level: General User
Joined: 2/23/2011
Status: Offline
11/21/11 1:47 PM CST
wa wondering if anyone know a website to show the trajectory of my 270 weatherby with 150 grain remington corelock.

have it sighted in for 50 yrds cause i thought i would be hunting the swamp this year. now hunting a field and can shoot 300 yrds

any help is appreciatted

hoytguy
hoytguy
Level: General User
Joined: 11/6/2011
Status: Offline
11/23/11 4:57 PM CST
Check it out.

http://ballisticscalculator.winchester.com/

Docknboatlift
See Profile
Profile
Level: MEMBER
Joined: 8/23/2001
Status: Offline
11/23/11 10:41 AM CST
I'm going to respectfully disagree with Steve slightly on a technical point, but I think his intention is the same as mine is. Im not familiar with the .270 weatherby, but if it's a .270 winchester....being dead on at fifty will be approximately point blank out to 250 yards.

Your scopes sight line with a fifty yard zero will cross the bullet trajectory twice, once at fifty, impact high about an inch and a half at 100, crossing it for the second time at 175 or so, and about two and a half inches low at 250. Those numbers aren't exact, but they are close.

If you are trying to remain point blank out to 300, your bullet's first cross of the sight line will be somewhere around 30-40 yards, and the second around 250. You will be pretty high, maybe five or six inches at 150 yards. So as Steve said, regardless how you sight in you won't be point blank at some point in the trajectory out to 300 yards.

A bullet drop from zero of 13 inches sounds about right. Regardless of how you figure it and sight it in, a 300 yard shot is a hell of an accomplishment and is not a shot I would take this year given my lack of range time. At the very least, you need a range with something approaching 300 yards of length to know for sure you are on point out to that distance.

Also, I've found the distance of killing shots to grow somewhat equal to the same calculus a deer's antlers grow. If it's a 120 deer at 150 yards.....damn if it isn't a 140 deer at 225 yards when the telling is done. That observation is just FWIW by the way.

[This post was last edited on 11/23/11 at 11:47 AM]
PimplySwede
See Profile
Profile
Level: General User
Joined: 1/6/2009
Status: Offline
11/21/11 3:31 PM CST
"For a .270,. using a 150 grain bullet and a 25 yard zero we have a point blank range of over 300 yards. The top of our trajectory is 3.83 inches at 150 yards and 1.40 inches low at 300 yards."

I took the above from this: http://www.modeerhunter.com/stories/zero.aspx But, those numbers don't look right. Steve is correct, your bullet will drop off considerably at 300 yards.

We zero at 25 yards, using 130 grain corelokts. Once we get it zero'd at 25, we shoot again at 100 and tweak the L/R, leaving hi/low alone. Couple inches high at 100-150, back to zero at around 200 yards, but about 6-7inches low at 300.

Check out these ballistics tables: http://www.cpcartridge.com/270winB.htm

[This post was last edited on 11/21/11 at 3:38 PM]
Dbrockman
Dbrockman
Level: General User
Joined: 2/23/2011
Status: Offline
11/21/11 3:17 PM CST
thanks

Steve @ G & S
See Profile
Profile
Level: MEMBER
Joined: 6/15/2001
Status: Offline
11/21/11 2:18 PM CST
If you're zero'd at 50 yards, you're going to be about 13 inches low at 300 yards!

Formerly Steve @ G & S

Launch Map Viewer


Remember Me
Setup New Account
Forgot Your Password?
Membership Benefits
Compare Account Types
Please Practice Catch And Release
Lake-Link asks you to please take a moment to visit our fine sponsors:
Custom Jigs & Spins Plano Frabill Chevy Dealers Of Wisconsin Humminbird St. Croix Rods The 60 Second Angler Jerry's Sport Service Midwestern Shooters Supply IceForce AquaVu Uncle Josh Fenwick

Lake-Link.com find us on facebook