The Accurate Reloading Forums
.500 Jeffery API
31 January 2008, 02:45
JefferyDenmark.500 Jeffery API
Gentlemen
I do not think that this was what W. J. Jeffery had in mind back in 1929 when he designed the .500 Jeffery hunting cartridge.
Loaded with 110 grn of N 140
Cheers,
André
Always always use enough... GUN & KNIFE
31 January 2008, 03:11
KMuleinAKthe ones with the red tip are fun also

Hear and forget. See and remember. Do and understand.
31 January 2008, 23:25
RIPBlack tip AP milsurps make more accurate plinkers.

31 January 2008, 23:31
boom stickI say get 3 down of 577 that the add is comparing itself to via the 577 BME and do cordite levels

01 February 2008, 03:32
RIPIf I asked Stuart Satterlee to turn my action into a 500 Jeffery, would that give him any impetus to gitterdun?
.395 Tatanka 500 Mbogo 300 Lapua Magnum500 Jeffery
01 February 2008, 09:09
zhabaThats the same load of powder i use in my jeffery here in australia and it loves that load.But what is the projectile? and who's brass cases are you using?I can only find woodleighs which are good wouldn't mind trying something else and the brass I use(bertrams)hasn't been that consistant
Cheers jonno
01 February 2008, 14:36
JefferyDenmarkRIP
Get-R-Done

Are you turning your .500A2 into a Jeffery or are you having a .500 Jeffery made??
Black tip is WAHT? I know the red tip ones?
Jonno
I use Hornerbe brass from Germany, the best in the world. Bertram is not good it is too thin.
The bullets are military .50 BMG API bullets they weigh 650 grn and has a core of Volfram steel.
Welcome to AR.
Cheers,
André
Always always use enough... GUN & KNIFE
02 February 2008, 01:09
RIPAndre',
The Blacktip is AP, 700-grain weight, steel core no Incendiary charge in the bullet. Same as your API minus the I, with the I replaced by more steel.
Must be more concentric regarding center of form and center of mass. More accurate and slightly heavier, completely inert.
AP = Armour Penetrating/Piercing
I = Incendiary: make fire to torch off flammables in target
T = Tracer: make visible streaks of bullet path for walking fire onto target and to allow enemy to locate you.
APIT is API plus Tracer. Get it?

I have picture references with color coding of tips and bullet weights and designators (i.e. "M-33" etc.) but don't have it all memorized.
I could never change the .510 JAB into a 500 Jeffery. I need a 500 Jeffery only because I don't have one.

02 February 2008, 01:14
RobgunbuilderThose bullets are cheap entertainment. Load A-Max's. None will fit your mag box though.-Rob
Never underestimate the power of stupid people in large numbers to do incredibly stupid things- AH (1941)- Harry Reid (aka Smeagle) 2012
Nothing Up my sleeves but never without a plan and never ever without a surprise!
02 February 2008, 04:41
zhabaThank for the info.I found the supplier here in Aussie for the brass you mentioned and will be placing an order today so i can take the 500j back to zim this year to punish another cape buff
Cheers for the welcome to AR
straight shooting Jonno
02 February 2008, 13:19
RIP
02 February 2008, 23:59
JefferyDenmarkRIP
Thanks for the chart.
Some of those tips look great.
Cheers,
André
Always always use enough... GUN & KNIFE
04 February 2008, 23:22
Paul HMy 500 Jeffrey was long throated to shoot the 50 bmg milsurps. So far I've only loaded the 690 gr AP over 100 gr H-4350, and haven't chronoed it.
Either the A-square of the Jeffrey offer one ~2/3 the velocity of the 50 bmg, burning 1/2 the powder, and in a rifle of reasonable weight. Not a bad combo at all.
__________________________________________________
The AR series of rounds, ridding the world of 7mm rem mags, one gun at a time.
05 February 2008, 05:49
RIPThe standard 500 Jeffery throat (CIP) has zero parallel-sided freebore, it just has a leade.
It takes only about .3000" length of parallel-sided freebore plus a 1.5-degree leade to handle all the milsurps.
One may use up to .5667" length of parallel-sided freebore to seat the 750-grain A-Max out as far as possible for max COL.
Using the same bullets as the 50BMG, the 500A2 or 500 Jeffery would deliver about:
3/4 of velocity
using
1/2 of the powder burned
1/3 to 1/2 of rifle weight
4/5 of the barrel length
Compared to the 50BMG that is an extremely efficient way to motivate bullets.
