Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Hunting > The Basics, Starting Out


Chronographing brass

LinkBack Thread Tools Display Modes
Unread 06-24-2010, 07:56 PM
Silver Member
Join Date: Jan 2009
Location: NW OHIO
Posts: 325
Re: Chronographing brass

I have several of my favorite loads that have more than 27fps spread. No worries there
How many loads were checked? High quality chronograph?
Were all of the Rem cases from the same lot?
Were all of the bullets weighed and the same weight exactly?
was a fouling shot fired from a clean barrel?

I am not trying to be an ass but there are many more variables also
again 27 fps spread is not what I would worry about if the load groups well on paper
Reply With Quote

Unread 06-24-2010, 11:04 PM
Platinum Member
Join Date: Jul 2004
Location: Texas
Posts: 7,235
Re: Chronographing brass

Originally Posted by ReDnEcKBoHuNtEr View Post
I bought a chrono the other day and loaded up my 35 gr VARGET with a 55 grain bullet and cci primers(for my 22-250). i trickled the powder and the biggest difference was .1 (35 gr compared to 35.1)...i used all the same REMINGTON casings

when i shot it through the chrono i was getting different readings... i shot 5 shots and they went from 3599-3626....is that going to be a problem. i really only want to have an accurate drop chart out to 500 yards as i am also working on a 7mm-08 project. Is there something i did wrong to get different readings or is that 27 fps difference not going to be a problem when shooting at 500 yards
27 ft/sec is not bad for light 22 cal bullets but you will want to get in the 10 to 15 area to
shoot 500+yards.

Standard deviations are a indication of load quality. (The lower the SDs The better the load).

If you can get in the single digit SDs (.09 - )you are home.

The larger/heaver bullets of the 7/08 should be easier to get lower numbers.

Always use 5 or more shots to calculate SDs and ESs.

Reply With Quote
Unread 06-25-2010, 06:04 AM
Junior Member
Join Date: Jun 2010
Posts: 6
Re: Chronographing brass

ok thanks johhny, thats a good idea...kinda common sense if i would a thought about it a little
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: Chronographing brass
Thread Thread Starter Forum Replies Last Post
Group differences in Weatherby Brass versus new Norma Brass TX mountain hunter Long Range Hunting & Shooting 5 12-29-2010 10:17 PM
338 Edge, Brass life test. Rem 300RUM brass AJ Peacock Reloading 15 12-30-2009 12:26 PM
Pressure signs/chronographing Big_Tex22 Reloading 40 05-17-2008 06:25 PM
24 hour chronographing part 1 goodgrouper Equipment Discussions 8 07-11-2007 05:43 PM
Threading a Needle - chronographing at 500 yards Ian M Rifles, Bullets, Barrels & Ballistics 18 10-08-2002 08:41 PM

All times are GMT -5. The time now is 05:31 PM.

All content ©2010-2015 Long Range Hunting, LLC