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Duplicating NATO cartridges (cloning)

* This page has a lot of misc info found throughout the web on duplicating military cartridge performance. This wil you a TON of time as I have collected all the relevant info in one place. -Cartridge, . !mm, "all, #$%& 'se( )ifles, #$!, #$!*$, #$!*+. The cartridge is designed for use against personnel and unarmored targets. ,escription( "*--. the cartridge is identified by a plain bullet tip. .eight - $/+ grains -ength - +.+!inches 0rimer - 0ercussion 1Crimped into case2 0ropellant - .C /33 or C#) $45 Charge - +/. 1.C /332or +!. 1C#) $452 grains 0ro6ectile .eight - ! grains Chamber 0ressure - +,555 psi 7elocity - &+ 5 fps, $ feet from mu88le Cartridge, . !mm, "all, #/ 'se( #achine 9un, . !mm, #+3%:$ )ifle #$!*+. The cartridge is designed for use against personnel and unarmored targets. ,escription( "*--. the cartridge is identified by a green bullet tip. .eight - $%5 grains -ength - +.+!inches 0rimer - 0ercussion 1Crimped into case2 0ropellant - .C /33 Charge - +!.$ grains 0ro6ectile .eight - !+ grains Chamber 0ressure - ,555 psi

7elocity - &5+ fps, $ feet from mu88le 1ocab62

)ight now I;m using in a +5< $-4< twist service rifle barrel( +55=&55 yard line( 44gr Nosler "T>0, +3.5gr )-$ , CCI ")3 primer, and -C brass !55 yard line( /5gr ?ierra #atch @ing, +3.5gr )-$ , CCI ")3 primer, and -apua brass. Though, I;m going to switch to "erger /5gr 7-,s since the price on ?ierra /5gr is pretty much the same now. If you want an #@+!+ mod $ duplicate, try( 44gr ?ierra #atch @ing, + .&gr 7arget, CCI 355 primer, and -C brass - NOT:( T>I? -O*, :AC::,? ?**#I ?0:C?. '?: IN N*TO O) .B-,: C>*#":) ON-B. '?: *T O.N )I?@. - +4/5C fps in an $/< ?0) barrel

DBI( Nosler 44gr will shoot a little faster than ?ierra 44gr with the same powder charge. It is probably due to the fac the Nosler has a shorter base to ogive length and thus has less bearing surface with the bore.
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So if you want to stay within published max loads for safety looks like you might need a different powder. I get slightly hig than max velocity with slightly less than max load in my 20" !. "y standard ## gr $"% load is 2#.& gr of !!22'0 which me '2(0 fps. )he published max load is 2&.0 gr giving '2*& fps. So results vary a bit rifle to rifle. )he only "+ato ,ross" a I have ever chronied out of my rifle was 2000 headstamp -uatemalan and I got an average velocity of '22( fps.

If you want to switch to a different powder to easily achieve these mil spec velocities without having to run max loads ther several choices. here/s a few0 1owder............ published max load 2 velocity for ## gr $"% bullet eloader *#......max load 3 24.0c gr velocity 3 ''50 fps 6arget..............max load 3 27.#c gr velocity 3 ''4( fps 8(45#..............max load 3 2&.0c gr velocity 3 ''*# fps 9:-,;2<............max load 3 27.# gr velocity 3 ''*' fps !-=" -20*#......max load 3 2#.0 gr velocity 3 '24* fps !-=" -2(5#.....max load 3 2&.2c gr velocity 3 '27* fps 6-+*'#.............max load 3 2&.4c gr velocity 3 '2&4 fps I/m sure there are other possibilities as well.

I don/t think it matters if you want to play it safe. If the data is for a lighter weight case with a slightly larger volume then surely the same charge in heavier case would produce a higher velocity. )he problem is it will do so by producing a higher pressure as well. So it might not be the best way to get the "extra" velocity you want. If you like >7(4 or have a lot of it already or whatever is the reason you want to go with it. I think that is more important then pushing out the pills to some spec velocity. )he max velocity listed for >7(4 is 54? of the mil spec velocity. I"8@ that last 2? really doesn/t mean shit

Q. How do I duplicate US Military ammunition when handloading?

A. The following are the specifications for '? ?mall *rms ammunition. If you have a chronograph you simply loa

correct weight bullet to the velocity specified. If you don;t have a chronograph 1shame on youE2 some suggested loa using military brass and bullets are listed. ALL LOADS USE MILITARY BRASS (e cept t!e " ##)$ AND MILITARY BULLETS (OR T%EIR &OMMER&IAL E'UI(ALENT)) REDU&E ALL LOADS BY *+, (E-&E.T T%E LOAD MAR/ BY 0) AND 1OR/ U.
Militar2 A##unition E3ui4alents Cartridge M41 .38 M88' ,, Bullet Weight (gr) 130 1'4 '30 !! #' 14 113 11! Velocity f/s !0"4! Suggested load(s) #.3 gr $o%er$istol& !.' gr ()i*ue or ()i+ersal

1'30"!0 #.4 gr -ccurate .!& 8 gr Blue/ot 8'0"'! !.' Bullseye

M1 11 .4!-C$ M1 3 !.!# ,, M8!! !.!# ,, M80 1.#' ,, M118 1.#' ,, S4ecial Ball M118 1.#' ,, S4ecial Ball 53 (Sierra M6 7ullet) M8!' 1.#' ,, M-8C0 (Sierra M6 7ullet) M' Cal .30 M1' Cal .30 M-8C0 M1 Cal .30 car7i)e

3'!0"40 '# grs. of 033! 30'0"40 '1 grs of 148 or BallC' '1!0"'0 4'.! 2M348 !& 4# grs. 148 or Ball C' '!!0"30 43 grs. of 351! or 148 '!80"30 4'.! grs. of Varget&

1#8 1!' 113 110

'!!0"30 41.! 2M348 ! '140"30 48 grs. 2M348 ! '#40"30 4# grs. of 351! 1 00"30 14 gr '400 or 14 gr 09110:

* /o )ot reduce 0110 ,ore tha) 3;

. !mm *mmunition "allistics Chart

Cartridge

Weight Length

Propellant ype .C/33 or C#)$45 I#)334 .C/33 or I#)/+5/# .C/33

Propellant Weight +/. or +!. gr

!ullet Cham"er Weight Pre##ure !gr +,555psi

$elocity &+ 5fps at $ ; mu88le $35-$! fps at from mu88le &+55fps at $ ; mu88le &5+ fps at 4/; mu88le +/45fps at 4/; mu88le &&+3fps at 4/; mu88le

. !mm "all, #$%& $/+gr . !mm 9renade, #$% . !mm Tracer, #$%! . !mm "all, #/ . !mm Tracer, #/ ! . !mm *rmor 0iercing, #%%

+.+!<

$+!gr

$.%<

+ gr +/. gr, + .&gr or C#)$45 +!. gr +!.$gr

!gr

FnbspG

$44gr

+.+!<

3gr

+,555psi

$%5gr

+.+!<

!+gr

,555psi

$%$gr

+.+!<

.C/33

+3.4gr

!&.4gr

,555psi

$/5gr

+.+ <

.C)/3

+4. gr

+gr

5,+ 5psi

4.!+mm *mmunition "allistics Chart

4.!+mm "all, # % &%&gr 4.!+mm *rmor 0iercing, #!$ 4.!+mm Tracer, #!+ 4.!+mm 9renade, #!3 4.!+mm "all, ?pecial, #$$/ 4.!+mm ,im &%&gr

5,555psi +4 5fps at 4/; from mu8

5,555psi +4 5fps at 4/; from mu8

&/&gr

+./<

.C/3!

3!gr

$3+gr

5,555psi +4 5fps at 4/; from mu8

+% gr

+<

.C/(&5 .C/3! and I#)3/% .C/3!

3 gr

$3+gr

5,555psi $!5fps at ; from mu88le

&%5gr &/$gr

+./&< +./<

33gr 3!gr

$4+gr $35-

5,555psi +!35fps at

5,555psi +4 5fps 1C#)?2, +!/5f

Tracer, #+4! 4.!+mm *rmor 0iercing, #%%& -&!+.!gr +./< "onfors NC$+%5 3 gr

$ 5gr $+!.!gr

19#2 at 4/; from mu88le

,$$ psi +%/ fps at 4/; from mu8

I/ve been working on a duplicate m*5' round for awhile now using accurate 22'0. I got some federal xm*5' a also some winchester #.#& m*5' spec ammo and chronographed it. >@@@@->AAAAA. its some hot stuff. )he winchester/s avg speed for # shots was '24#. and the federal was right at '2&0. )his is about #-& feet from th muBBle.

)he only way I can duplicate with accurate 22'0C,,I #.#& primersCfed brass is to go about a half grain over th max listed load. )hey list 2#gr max on a ##gr bullet. >ith 2#.2 grains I get somewhere around '*&0fps out of 20" barreled ! with a mil spec surplus upper. I/ve taken this load up to 2#.# grains in .* grain increments and pressure signs in the brass at the 2#.#gr level on a hot day. +o blown primers or split brass. but it was pushin

I/m convinced the military crimps the primers for no other reason than they don/t want them to blow out. "*5 loaded right at the limit. from what i/ve seen.

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,urrently I reload ##gr 8ornady S1 and 7#gr 8ornady 9)81. I use 9oth rounds in my ! -*# with *07 )wist and my Savage *05 )wist. I played around with my press and found out that i was able to use both and only thing I had to change was the powder charge. --

I eHactly duplicated the #+!+ load with T*C, but it is very hot and I changed to N 35.

It was +! grains of T*C driven by a #agnum 0rimer with the Nosler cannelured 44 grain bullet. This came out at o +4 5 fps from a $! inch barrel. I didn;t have a problem with it but some of the primers were flattened. To dup the #+!+ using available powder I use the much more eHpensive N 35 and 7arget.

That said I use more T*C than any other powder because there is no reason to load this hot for plinIing, triggertime drills, and even shtf with !+ grain bullets.

Dor T*C I suggest + grains with a normal primer driving !+ grain bullets. That will more than approHimate #/ be easy on your gun. I load + different !+ grainer bullets, pull down #/ and 9olden .est !+ grain with cannelure --