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.500 Jeffery API

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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
KMuleinAK
the ones with the red tip are fun also clap


Hear and forget. See and remember. Do and understand.
31 January 2008, 23:25
RIP
Black tip AP milsurps make more accurate plinkers. thumb
31 January 2008, 23:31
boom stick
I say get 3 down of 577 that the add is comparing itself to via the 577 BME and do cordite levels Big Grin


577 BME 3"500 KILL ALL 358 GREMLIN 404-375

*we band of 45-70ers* (Founder)
Single Shot Shooters Society S.S.S.S. (Founder)
01 February 2008, 03:32
RIP
If 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 Magnum
500 Jeffery
01 February 2008, 09:09
zhaba
Thats 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
JefferyDenmark
RIP

Get-R-Done Big Grin 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
RIP
Andre',
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? Wink

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. Wink
02 February 2008, 01:14
Robgunbuilder
Those 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
zhaba
Thank 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
JefferyDenmark
RIP

Thanks for the chart.
Some of those tips look great.

Cheers,

André


Always always use enough... GUN & KNIFE

04 February 2008, 23:22
Paul H
My 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
RIP
The 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. thumb