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 Rechargement 45/70 par Chuck Raithel.

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J.B.Books
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MessageSujet: Rechargement 45/70 par Chuck Raithel.   Sam 7 Jan - 7:53

Un lien en Anglais et la dernière page traduite en Français pour les rechargements du Trapdoor...


http://www.wahsatchdesperadoes.com/Intro_to_BPCR_Loading.pdf



"Rechargement pour le Trapdoor 45-70, par "Minnesota Al"

Voici donc un rechargement pour débutants concernant le Trapdoor en 45-70. Ce chargement fonctionne très bien dans la plupart des Trapdoor que j'ai eu l'occasion d'essayer. Avec des étuis tirés une fois, le matériel necessaire est minime. Facile et économique a fabriquer et tirer.

- Balles Lee a base creuse en 405 grains "Government" (moule Lee 457"-405grains), alliage coulé 25:1 (25 parts de plomb pur pour une part d'alliage dur antimoine), recalibrée à .459 (recalibrage facultatif)
Ce moule fait d'excellentes balles et est bien plus durable que leur modele en 500gr. Le mien n'alignait plus passé 1000 balles coulées et les balles en question n'ont d'ailleurs jamais été extremement précises.

- Graisse 50% huile d'olive/50% cire d'abeille (le graissage dit "a la casserole" fonctionne)
- Pas de bourre (base creuse...), n'oubliez pas d'enlever la graisse logée dans la base de la balle avant de positionner ladire balle dans l'étui.

Poudre noire FFg - 63gr de GOEX ou 70gr d'Elephant (poudres noires/substitus dispos en amérique...) Compréssés a .15" (enfoncement de la balle: .65") Usage d'un drop tube (juste un très long tube dans lequel on fait tomber la poudre jusque dans l'étui: celà "range" les grains de poudre et permet de prendre moins de place dans l'étui: une sorte de compression sans compresser, en somme) Vous aurez besoin d'un "compression die" pour obtenir cette compression, n'utilisez pas le siegage de la balle pour le faire (déformation de la balle).

Si vous ne voulez pas utiliser de compression, la suisse n°1,5 et le drop tube conviennent (laissez juste la place de sieger la balle)

- Amorces federal 215
- étuis W-W (winchester?), non recalibrés.
- balles siegées à la main. Certains trapdoor semblent déformer a l’éjection les douilles juste assez pour que cette opération soit difficile. Certaines balles nécessiterons un positionneur, surtout si elles ne sont pas recalibrées.

Si vous voulez transporter vos balles dans une ceintures-cartouchière, vous aurez besoin du lee factory crimp pour 45-70 (dispo chez Pat Wolf): il permet de réaliser un léger sertissage sur la balle, qui laisse ladite balle pivoter dans l'étui, mais la maintient en place.

Si vous rechargez des douilles neuves, vous aurez besoin d'expandre le collet (outil expandeur), et malgré cela, la balle sera probablement trop serrée dansw l'étui. N'espérez pas une précision extraordinaire de ces rechargements. Des douilles déjà tirées au moins une fois seront plus facile a recharger, et vous donnerons une précision bien meilleure.

AL"


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MessageSujet: Re: Rechargement 45/70 par Chuck Raithel.   Ven 16 Mai - 14:47

Juste quelques mots pour donner suite à une conversation de saloon lors d'un camp récent concernant les munitions utilisées par l'armée US entre 1873 et 1893 dans ses rifles et carabines dits 45-70 Springfield.

RIFLE (en dotation dans l'infanterie):
étui en alliage de cuivre comportant une amorce intérieure
poudre noire 70 grain
balle 405 grain diamètre .458
En 1882 l'amorce devient extérieure (comme dans les munitions actuelles) et le poids de la balle est porté à 500 grain.

CARBINE (en dotation dans la cavalerie)
étui identique à la munition du rifle
poudre noire 55 grain
balle 405 grain diamètre .458 (pas de changement en 1886)
Jusqu'en 1886 les munitions du rifle et de la carabine avaient la même longueur, la quantité de poudre moindre dans la carabine étant compensée par une bourre en carton. Les étuis étaient marqués d'un C ou d'un R pour différencier les deux types. En 1886 la bourre fut supprimée et l'étui restant le même, la cartouche de la carabine se distinguait de celle du rifle par le fait qu'elle était donc plus courte. Le marquage est abandonné.

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MessageSujet: Re: Rechargement 45/70 par Chuck Raithel.   Sam 17 Mai - 7:01

A group of interesting .45 Government Cartridges....




All were made at the Frankford Arsenal, and they show many of the changes made to the cartridge during its production. Beginning with the first picture, the cartridges are:
#1 - Unheadstamped Benet inside-primed cartridge made during the two year period between January 1874 and March 1875. These early cartridges are identifiable by the wide spacing, this one measuring .285" or approximately 9/32", between the ends of the indentations that hold the primer anvil in place inside the case against the head of the cartridge. The cases for these cartridges were made of copper, with the heads and rims formed by shaping and folding the metal, just as the cases for .22 rimfires are made today. Initially, the cartridges for the Springfield trapdoor rifles and carbines used the same 405 grain lead bullet and copper case. The bullets were seated the same depth into the cases, making the rifle and carbine cartridges impossible to tell apart once they had been removed from their boxes. The rifle cartridges were loaded with 70 grains of black powder, and those for the carbine were loaded with 55 grains, with paper wads to take up the empty space in the cases. Firing one of the rifle cartridges in a carbine was quite painful to the shooter, as the 70 grains of powder caused the light carbine to kick like a mule.

#2 - Raised US CARBINE headstamp, produced in July of 1874. The purpose of the headstamp was to differentiate carbine cartridges from those made for rifle use; the rifle cartridges continued to be unheadstamped. The headstamps on these are usually quite light and difficult to photograph, as is the case with this one. Apparently, headstamping these cartridges added significantly to production expenses, and this practice was stopped as a cost saving measure.

#3 - An unheadstamped Benet inside-primed cartridge made between March 1875 and March 1877. The ends of the case indentations on this and the remaining inside primed cartridges in the pictures are much closer together than on the earlier cartridges, this one measuring .105" or approximately 3/32". The inside-primed cartridge continued as the standard until August of 1882.

#4 - A Benet inside-primed cartridge headstamped R 3 F 77. As a means of distinguishing between rifle and carbine cartridges, the arsenal began headstamping them in March of 1877. The 'R' identifies this as a rifle cartridge; carbine cartridges were headstamped with a 'C' (see the second cartridge from the left in the second picture). The '3 77' indicates the month and year it was made, this one being part of that first month's production and a very difficult headstamp to find. The 'F' indicates that the cartridge was made at the Frankford Arsenal, which was not really necessary in 1877, when it was the only government arsenal producing these cartridges. This identifying letter was probably added in anticipation of contracts with private companies to produce the cartridge, which began in mid-1878.

#5 - A Berdan (externally) primed cartridge headstamped R 4 F 77. In March and April of 1877, some experimentation with Berdan primers was done at the Frankford Arsenal; this is one of those cartridges. The results of their tests must not have proven entirely satisfactory, as the inside-primed cartridge continued as the standard for another five years. Production of the inside-primed cartridges was costly, as the cases could not be reloaded. That the U.S. military continued to use them as late as they did is surprising for several reasons. First, various forms of the external primer were available and had been used at both the Frankford and Springfield Arsenals prior to the time the 45 Government cartridge was first produced. Further, the government tended to be quite conservative (stingy?) when it came to equipping and funding the military, so any means to cut costs would usually be pursued. Finally, the commercial ammunition makers (UMC, USC Co, and WRA Co) were producing externally primed ammunition in the early 1870s, and all of the contract ammunition made by them was externally primed and reloadable. I am looking for one of these externally primed cartridges with the 3 77 date; if you have an extra one and would consider a trade for items from my web page lists, please let me know.

#6 - A Benet inside-primed cartridge headstamped R 1 F 82, with a 500 grain bullet. Between 1879 and 1884, the Springfield Armory was experimenting with a long range cartridge with a longer case, a 500 grain bullet, and 10 additional grains of powder. While these cartridges tended to be more accurate than the standard cartridge, it was found that the heavier bullet was responsible for the increase in accuracy, not the heavier powder charge. In January of 1882, the Frankford Arsenal began producing the 45-70 rifle cartridge with a 500 grain bullet; this cartridge is one of those. The 405 grain bullet continued to be used for the .45-55 carbine cartridge.

#7 - An externally primed cartridge headstamped R 1 F 82. The Frankford Arsenal continued preparing small batches of externally primed cartridges on a developmental basis along with the standard inside-primed cartridges that they were producing. This cartridge was made in January of 1882, and has the same flat (unstepped) base as on the one (#5) made in April of 1877, but a smaller primer.

#8 - An externally primed cartridge headstamped R 8 F 82. The Frankford Arsenal finally began production of the externally primed cartridge as the standard in August of 1882; this is one of the cartridges produced that first month. These used solid head cartridge cases with a stepped 'ring' on the head, as opposed to the folded, flat heads of the earlier cases. This one may be a reload, as the 405 grain bullet would not normally be found in a rifle case this late in 1882.



#9 (picture 2) - A Benet inside-primed blank headstamped 9 F 82. This date is a bit late for an inside-primed case, but it would be expected that the arsenal would have a quantity of these Benet cases (perhaps rejects) as well as raw materials that needed to be used up when they made the switch to the externally primed case in August of 1882. Therefore, it would be reasonable to assume that headstamp dates after 8 82 would show up on Benet cases, though I would expect them to appear only on blanks, such as this one, rather than ball loads.

#10 - A rather weary Morse Pattern 1886 cartridge case headstamped F 8 86. Between March of 1886 and February of 1887, the Frankford Arsenal produced on a trial basis the Morse cartridge, which had a removeable base intended to make reloading easier, and a tinned brass case to extend its life by cutting down on corrosion. I selected this fired case to show that these cartridges actually did see some use in the field, and don't just exist in the unused state. The removable base apparently did not prove its worth, as the Morse cartridge was never produced in great quantities. The head of this case has split, allowing the removable section to be more apparent. Often, these are quite difficult to tell from common cartridges, as the juncture between the case head and the removable central portion coincides with the step in the head of the standard case. I covered the Morse cartridge in depth on my June 2004 picture page, including pictures of the components of the case, as well as an original box. Links to past pages can be found on the current month's picture page. One other characteristic worth mentioning about this cartridge case is the layout of the headstamp, consisting of only three positions rather than the four position headstamp originally in use. This change occurred in May of 1886, after it was decided that the obvious differences in the lengths of the rifle and carbine bullets made it unnecessary to include the 'R' or 'C' in the headstamp.

#11 - A tinned brass case rifle cartridge headstamped F 8 88. In spite of the lack of proven benefits from the Morse removable base, the tinned brass case proved its worth and was adopted as the Pattern 1888 cartridge in October of 1888. The one pictured here predates that by a couple of months, indicating that the arsenal continued to work on the tinned brass case on a limited or developmental basis, after production of the Morse Pattern 1886 cartridge ended on February of 1887, and leading up to the adoption of the Pattern 1888.

#12 - A copper case carbine cartridge headstamped F 8 88. That production of copper cases was still going on when cartridge #11 was produced is evidenced by this carbine cartridge. Another characteristic of this cartridge is its deep-seated 405 grain bullet, the result of removing the paper wads and seating the bullet down in the case against the 55 grain powder charge.

#13 - A copper case carbine cartridge headstamped F 9 88. With the adoption of the tinned brass Pattern 1888 cartridge in October of 1888, this should be the last headstamp found on a copper case .45-70 or .45-55 ball cartridge.

#14 - A tinned brass case Pattern 1888 carbine cartridge headstamped F 12 88. The first Pattern 1888 cartridges were headstamped F 10 88, but this cartridge made in December of that year is the earliest date that I have.

#15 - A tinned (worn) brass case Pattern 1888 cartridge headstamped F 3 95. This is probably a reload. All good things must come to an end, and so it was for the regular Army's use of the .45 Government cartridge. The long overdue adoption in 1892 of a repeating rifle (in this case the .30 caliber Krag) as the standard shoulder weapon of the Army resulted in a declining need for the larger caliber ammunition as the new rifle was phased in. In March of 1895, the last of the .45 Government cartridges for Army use were produced, headstamped F 3 95. The .45 Government cartridge continued to be made for Navy and militia use until June of 1898, when all production ended at the Frankford Arsenal. Included during this period was limited production of the Model 1898 cartridge, a smokeless version with a case cannelure just below the base of the bullet. The smokeless cartridge was made beginning in April of 1898. Both smokeless and black powder loads were produced at the same time, so the presence or absence of the case cannelure is the obvious way to tell if one of these cartridges is a smokeless or black powder load. The smokeless cartridges are pretty difficult to find; unfortunately, I'm still looking for one.

Special thanks to Howard Hoovestol for taking the time to provide some corrections to the original information I had included here, as well as copies of a hand-written 'Record of Alterations and Improvements in Rifle, Carbine, and Revolver Ammunition, Cal. .45' prepared in 1878, and covering the period from July 1873 through February 1878.

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LLOYD

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