Range Report 300winmag Sierra Match King Ballistic help

[Jig Stick]

Im trying to find out bullet drop for this round from 0-1000yrds with a 100yrd zero. Im going to be ordering a Nightforce NXS 3.5-15 x 50 F1 for my remington 700P and want to make sure that I will have enough elevation clicks to get out to 1000yrds with this bullet. I plan on getting the scope with .1mil clicks. Im trying to figure out if Im going to need risers or not. I cant find any ballistic data for this round anywhere. can you please guide me?

 

[Rob01]

Re: 300winmag Sierra Match King Ballistic help

You will have more than enough. The F1 has 110 MOA of elevation and on a 20 MOA base you will have around 75 MOA of up elevation and the 300WM to 1000 only takes about 25-28 MOA at the most.

Not sure what you mean by risers. Are you talking about a tapered base? If so you do't need one but it doesn't hurt and they are usually the same price as a 0 MOA flat base so why not get it.

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

Thank you for the reply. That is good news. But I still need to know the bullet drop for this bullet. Im working on Mildot calculations, elevation changes, and holdovers. And it seems that I need to know the bullet drop at distances in order to determine how many Mils I need to eithe hold over or click my scope up to stay on target. And I cant find the bullet drop information. Any ideas?

 

[Rob01]

Re: 300winmag Sierra Match King Ballistic help

You need to chronograph the bullet from your rifle as it won't be the same from someone elses. Once you have the velocity go to JBM Ballistics calculations and put it and the other data in and it will give you a basic ballistic chart for the round.

If you just wanted to SWAG it then use 2950fps and it should get you on paper.

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

Excuse my ignorance as I am just learning...What does SWAG mean? And thank you for the calculator. I cant seem to find the BC for this round now. What a mess...

 

[cttbax]

Re: 300winmag Sierra Match King Ballistic help

SWAG= Scientific Wild Ass Guess.

 

[Rob01]

Re: 300winmag Sierra Match King Ballistic help

The round is in the bullet drop chart library at the top under Sierra .308 190 Matchking (Litz). The Litz numbers are tested and will work the best.

SWAG = Scientific Wild Assed Guess

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

LMAO..I love it. That JBM calculator gets very specific in regards to atmospheric conditions. Do most of you round when it comes to temperature, wind, atmospheric pressure etc.???

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

Do most people use the JBM Calculator for every handload they develope? And use the values on the cards produced to determine how many Mils or MOA's to dial their scopes up in order to compensate for elevation? Am I on the right tract here?

 

[Rob01]

Re: 300winmag Sierra Match King Ballistic help

The more accurate you are with the info you put in the more accurate the data you get out. Garbage in, garbage out. Use the JBM Trajectory Simplified http://www.jbmballistics.com/cgi-bin/jbmtraj_simp-5.1.cgi It is easier for the new user and has you put in the more important things. You can leave cant angle and line of sight angle at 0.

I use JBM for shooting matches as my local range only goes to 400 yards and I need to shoot to atleast 1000. JBM is very accurate when the right data is put in. People use it when all they have is the velocity from chronoing a new load and want to shoot farther as well so they don't waste ammo getting on target.

Run the charts in mils and you can use them as elevation and also as your holds with a mil reticle. Just make sure that you are on the right power in your scope if it is a second focal plane scope in which the reticle will onlly subtend correctly on one power.

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

Which data fields are most crucial? I found accurate info for elevation and atmospheric pressure. But when it comes to cant, line of sight, sight elevation....im kind of lost.

 

[Rob01]

Re: 300winmag Sierra Match King Ballistic help

Like I said, those aren't needed. Leave them at the default. Bullet, Velocity, Scope height, WInd and Movers if you need that, What ranges you want data and spacing, atmospherics, and what you want the data in which would be mil and that's it.

Basically everything on the simplified version except the cant angle and line of sight angle.

 

[Jig Stick]

Re: 300winmag Sierra Match King Ballistic help

Perfect. I will use this material as a starting point and see what happens at the range. And I can tweak the cartridge from there.