175gr SMK's @ 2570 MOA data to 1000

[Pappabear]

Mark bumped up our loads last week and we were able to get the 175's flying at 2,570 which is as little better. He loaded with 43.8 Varget and accuracy was very good.

I am getting a new scope and curious how I build a chart the shows based on bullet weight, speed, BC...you need "1? clicks to hit 600 yards or whatever it may be.

I have heard there are online charts for this, but I never played with them. Any help =gracias!

[ICANHITHIMMAN]

I have NF software on my PDA it works very well! Here is a link you have to sign up but this progam will save your loads and you can print the drop data. THere are programs for your android phone or your ipod

http://www.longrangehunting.com/ballistics.html

[orkan]

Cheapest way to get what you are after, is the way I do it. (for something you can take in the field anyway)

Buy a Kestrel 4000 or better.
Buy an iTouch.
Buy an otterbox to kee the itouch dry and protected.
Download "Ballistic FTE" from the app store.

I keep my itouch in my databook. Ballistic will give you a firing solution based on your load and current conditions. It's been accurate to within a tenth of a mil for me on everything I've tested it with, including 308 out to 1540yds.

Another app to try is "bulletflight" by knights armament. It is not as powerful as Ballistic, but is easier to use for beginners and still very accurate to 1000yds. Can't say I've really used it past that, as I kind of "out grew" it before I started pushing past 1k yds.

[markm]

cool.

[bnanaphone]

Some good info here. I have been using "Bulletflight" on my iphone and it works pretty well for my, limited knowledge, needs. My only issue is that I don't have a chronograph to get accurate MV numbers from my rifles. I only shoot commercial ammo (BH, Hornady & FGMM) so I try my best to find relatively accurate numbers for my barrels via the internets. I do like Orkan's idea of the Kestrel and ipad, hello Christmas!

I only use the software for my LMT .308 with 16" CL barrel and my 16" BCM SS RECCE, for now. Will be getting a bolt gun in the coming months.

[rickp]

You can also do this on the internet and print it out.
As some have mentioned you'll also need weather info. The most accurate way is with a Kestrel NOT the cheapest way though.

If you have an Iphone I use a program called Ballistic FTE. It works great. It even uses the same algorithm as JMB online.


http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

[orkan]

Taking charts with you does not account for environmental variables at your shooting location. It's nice to have them around for a fallback, but in that case I have my actual dope cards to wing it off of.

To get really accurate, a kestrel with an interlink to a trimble nomad is about the best you can get. Very expensive though. Around $3500 by the time its all setup with what you need. It's bigger and heavier too.

My iTouch is small, and cheap. Kestrel, iTouch, and the databook all have their place in my pack.

[marco.g]

Some good info here. I have been using "Bulletflight" on my iphone and it works pretty well for my, limited knowledge, needs. My only issue is that I don't have a chronograph to get accurate MV numbers from my rifles. I only shoot commercial ammo (BH, Hornady & FGMM) so I try my best to find relatively accurate numbers for my barrels via the internets.

Im having the same issues as these.. Has anyone here chrono'd 175 gr FGMM out of a 20" barrel (preferably factory remington)?

Federal's site lists it at ~2600 fps, but i think that is from a 26" barrel.

[mark5pt56]

From Sierra's site

http://www.sierrabullets.com/index.c...5&bullettype=0

mil----after clicking link, back space, change to moa if that's what you have. you can also change the data, I put in certain temps and likely DA based on your AO

http://www.jbmballistics.com/cgi-bin/jbmcard-5.1.cgi

[mark5pt56]

Im having the same issues as these.. Has anyone here chrono'd 175 gr FGMM out of a 20" barrel (preferably factory remington)?

Federal's site lists it at ~2600 fps, but i think that is from a 26" barrel.

Doubt it's going 2600, I know Blackhills advertised at 2600 with their 175's and with an sps, lucky to break 2500, I was getting 2475-2500, another shooter got 2525 from a 22" sneider barrel.