500 M load development

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NewInWestsyde

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The title syays most of my question. wIll try to shoot in upcoming V-bulls...
First step equals start with a good gun (starting with a medium) what is the next step? Does the bullet drop some where between a lot and a heck of a lot?? Using a 69 Rgrain .223 .
Thank you in advance
 
Sean...lets say your bullet is running around the 2950fps mark.

Go to http://www.jbmballistics.com/~jbm/cgi-bin/jbmucard-5.0.cgi and put in the particulars.

Choose your bullet (69gr Sierra)
Our range is at 2000ft elevation
Use 2950 as a velocity
use 15c as a temp
50% Humidity
use a 300m Zero (which you should be zeroed for or close to)

Your 300m to 500m elevation should be around 7.5 minutes. This should get you on paper and be able to adjust from there.

Learn to use the above link (bookmark it) as it is very useful. You can also change the parameters to see what different elevations do to your comeups as well as different temps and humidity levels. They all play a major role in how your bullet will react to the conditions.
 
MagnumPeanut said:
I honestly do not understand the question.
Click to expand...

i will switch my thread from a question to a progress \ picture report with any or all feedback agreatly appreciated

have been trying to find another powder to shoot 69 grain seirras'

vad marginal success with Varget but poor luck finding material so i embarked on a mission to try different powders

due to hours in the day and days in the week i managed to try five different wieghts (,24.1, 24.3 , 24.5 , 24.7 24.9, grains) of Tac Ramshot w(ith 25.2 being Maximum reccomended) and two different primers (WSR and CCI 400) as my main suspects for being potential loads from inital load testing

24.7 and winchester proved to be about the best at 100 meters in the month of May and have not bee n near the press scince

with eight pontential days till 8 am start i thing i will take those numbers and round out a batch to last the two days

and probably a box or two just in case i have to shoot out with richard fora tie breaker... you don't run out you don't lose..
 
CyaN1de said:
Sean...lets say your bullet is running around the 2950fps mark.

Go to http://www.jbmballistics.com/~jbm/cgi-bin/jbmucard-5.0.cgi and put in the particulars.

Choose your bullet (69gr Sierra)
Our range is at 2000ft elevation
Use 2950 as a velocity
use 15c as a temp
50% Humidity
use a 300m Zero (which you should be zeroed for or close to)

Your 300m to 500m elevation should be around 7.5 minutes. This should get you on paper and be able to adjust from there.

Learn to use the above link (bookmark it) as it is very useful. You can also change the parameters to see what different elevations do to your comeups as well as different temps and humidity levels. They all play a major role in how your bullet will react to the conditions.
Click to expand...

Why would your zero be 300m?

It makes better sense to zero at 100 yds (or metres) and move up from there.
 
N.I.W.S is a new F-Class shooter and we don't shoot any closer than 300M.

He is trying to get dialed in for our season Finale 3-500M match on our new 500M range.
 
after cleaning and nec-sizzing twice fired winchester brass (once to make empty cases and once reloaded twice fired in current rifle)
trimmed all to same length (1.760 and still one third are still not touching cutterhead due to ??//?? short brass?)
filled out freshly cleaned primer pocket holes iwth winchester small frifle
load grains of TAC into fourty cases to lob off at pullers wednesday
picked three boxes of seirra 69 grain bhbpt

One box has eight bullets in it
Two box has thirty four
Three box has twenty

if i use all 40 for finding paper on wednesday morning
That leaves me with 26 to load up for saturday and sunday morning

Do i go shopping tommorow for new??

Do i use 69 grain nosler in direct subsitute??

Don't bother finding paper and save fourty??
 
NewInWestsyde said:
after cleaning and nec-sizzing twice fired winchester brass (once to make empty cases and once reloaded twice fired in current rifle)
trimmed all to same length (1.760 and still one third are still not touching cutterhead due to ??//?? short brass?)
Click to expand...

Not a problem; don't worry about it.

filled out freshly cleaned primer pocket holes iwth winchester small frifle
load grains of TAC into fourty cases to lob off at pullers wednesday
picked three boxes of seirra 69 grain bhbpt

One box has eight bullets in it
Two box has thirty four
Three box has twenty

if i use all 40 for finding paper on wednesday morning
That leaves me with 26 to load up for saturday and sunday morning
Click to expand...

If you have a good 300m zero, don't be terribly concerned about getting a perfectly good 500m zero in advance of the match. Especially if you have a scope that has reliable adjustments, you ought to be able to dial in the come-ups calculated by your ballistic program (e.g. 7.5 MOA in Ian's example above), and have your first sighter be well within the black (more likely than not a "bull" on the TR target).

If you want to fire a few shots the day before, go ahead, but it shouldn't take you any more than five (ten at the most) to be able to leave the range with a very, very confident 500m zero.

Do i use 69 grain nosler in direct subsitute??

Don't bother finding paper and save fourty??
Click to expand...

69 Noslers won't be _exactly_ the same, but they'll be reasonably close to 69 Sierras (as in, your Noslers and Sierras at 500m ought to land within a few minutes of each other, i.e. well within the aimin black).
 
have enough loaded to sight and shoot
not much powder left in cnianister
how well i shoot tommorow will be range report
wind is blowing insanely right now down in the westsyde
 
a little late on results but here it goes


Saturday seen a lot of wind (had to put my shoulder into the door just to open and head out on to the range)

we seen three strings off shooting on saturday
300 meters
300 meters
500 meters

i was entered in the F-class factory \sporter group so i did not have to compete against the 6 BR X's counters and such possible scoring was out of 50-10X possible

First string 40-1X
Second string 45 - 4X
Third string and first time shooting this rifle at 500 M 45-3X

these scores made for a first day aggerate count to put me in second place

Sunday morning saw a lessening of wind conditions and two strings out to 500 meters

Fourth string 49 -4X
fifth string 47-1X

these numbers attained a second place aggerate for the day

over all shooting made for some second place swag to put up in the wall (woohoo)

only downside being i want to get better ( don't we all)

i think there is currently room for development on this load but at 300 and 500 meters out of fifty shots that counts as fifty down coyotes

Things done :

quality control on brass prep is well under way i.e. length, weight sorting

Things to do :

i got a little flack from some for not trickling out powder for this event...just taken out of thrower directly into cases

try different bullet seating depths in and out of lands to tighten up groups

pick up a new rifle in either 6 BR or .223 (.223 just to stay out of the battle for fifth place behind some of the shooters on this forunm that shoot waaay too good)

Or a lefty .243 to have fun and to have a nice bolt face for rebarrelling

thank you for your time in advance

in case you were wondering load data?


Rifle = Savage Modle 25 in .223

Brass = Thrice fired winchester from same rifle neck sized only

Primer = WSR

Powder = Ramshot TAC 24.7 grains (so nice and smooth to throw in RCBS powder messure that i did not bother trickling very fine like baby powder)

Bullet = 69 grain seirra BHPT seated to just touching the lands (from messurement first made when i got rifle and started reloading 1400 rounds ago or so so i do not know if there is any substatial throat errosion to make my think that these are jumping)


sorry for any spelling errors
 
NiWS, great to hear of your good experience shooting 300m and 500m - well done! I hope that the hook is well and truly set in you now... ;-)

Sounds like you and your rifle acquitted yourselves well. You can now try tweaking your existing load (though it sounds pretty darn good!), or perhaps try higher performance bullets for less wind drift (the various 75-grain HPBTs). But whether or not you do that, you have already shown that what you have is a pretty good setup (as you noted, minute-of-coyote out to 500m is not bad, eh?!)
 
Winchester is decent brass, but given the choice I would run Lapua....One less variable to worry about.
 
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