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Thread: M1917 Ammo & Rear Sight

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  1. #21
    Member Enfield Enforcer's Avatar
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    Quote Originally Posted by RC20 View Post
    If its 3/4 MOA at 100, technically its 1 1/2 at 200 and 2 1/4 at 300.

    One you get out into the 600 yard area then its wind and sight picture that drives the results.

    The gun will maintain that as far out as it stays super sonic but the sight limitations/sight picture come into play even with a scope.
    Thanks - that sounds interesting !
    An 2 1/4 inch group at 600 yards means appr. 57 mm for 5 shots at appr. 600 meters.. . Thats amazing.. . Could this result reached by using an original M72 National Match-Load ?.. . Or which load was it, please ? By the way, my M 1917-Example is a Eddystone-Enfield. The Serial-Number is 1048840, has anybody an information to the quality level of this M 1917-Variant ? Especially concerning the precision by using M72-Loads :-) We know that the Britishicon Army favored Winchester-Examples for P 1914-Sniperrifles.. .

    Greetings Enfield Enforcer
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  3. #22
    Really Senior Member Cosine26's Avatar
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    The question is-“For what ammunition is the M1917 sight calibrated?”
    At the time the M1917 was developed from the P1913, the standard cartridge of the US Army was the Caliber .30 Ball Cartridge so I would believe that it would be safe to assume that the sight would be calibrated for this cartridge.

    References to the Tables of Fire for the 30-06, the 30 M1icon Ball, and the 30 M2 Ball would indicate that the difference at the usable ranges is not significantly different to the average soldier to warrant re-calibration of the rear sight. Since the M1917 was not designated as the service rifle but was declared to be “substitute standard”, I do not believe that the M1917 sight would be re-calibrated for any new cartridge. As a matter of fact, I do not believe that the M1903 rear sight was recalibrated when the 30 M1 Ball or the 30 M2 Ball ammo was introduced.

    Here is an excerpt from the Field Manual for the M1917 at the time it was issued during WWI.

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    FWIW
    Last edited by Cosine26; 03-04-2019 at 07:35 PM.

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  5. #23
    Member Enfield Enforcer's Avatar
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    Quote Originally Posted by Cosine26 View Post
    The question is-“For what ammunition is the M1917 sight calibrated?”
    At the time the M1917 was developed from the P1913, the standard cartridge of the US Army was the Caliber .30 Ball Cartridge so I would believe that it would be safe to assume that the sight would be calibrated for this cartridge.

    References to the Tables of Fire for the 30-06, the 30 M1icon Ball, and the 30 M2 Ball would indicate that the difference at the usable ranges is not significantly different to the average soldier to warrant re-calibration of the rear sight. Since the M1917 was not designated as the service rifle but was declared to be “substitute standard”, I do not believe that the M1917 sight would be re-calibrated for any new cartridge. As a matter of fact, I do not believe that the M1903 rear sight was recalibrated when the 30 M1 Ball or the 30 M2 Ball ammo was introduced.

    Here is an excerpt from the Field Manual for the M1917 at the time it was issued during WWI.

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    FWIW
    Thats also an important factor. Thanks. I will study it a bit later exactly. What about the experiences with the M72 Ammo, concerning the sights and the accuracy, then ?.. . Somebody tested this ammo in this rifle, right ? :-)
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  6. #24
    Really Senior Member Calif-Steve's Avatar
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    No ammo expert here but, the WWI cartridge was the 150gr. cupro-nickel flatbase bullet. The M1icon cartridge was the 172gr. boattail copper jacket modern bullet. The M2 cartridge was a 152gr. flatbase copper jacket bullet. We fought WWII, Korea and Viet Nam with the M2 cartridge. The M1 bullet was developed from Swissicon M1911 ammunition and was developed after WWI. Only the Frenchicon used a boattail round in WWI, no one else did so.

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    Member JackDuggan's Avatar
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    The cartridge used in the M1917 was the 1906 .30 caliber, hence .30-06. After WWI the Army developed a new round, boat tail, heavier - maybe 174? - and called it the M1icon ball. I'm working from memory here, so not precise on my facts. In any case, that round proved to be too long range for the existing ranges, overshooting the safe areas. Rather than change all the ranges they decided to go back to something with the characteristics of the 1906 cartridge, 150 grain, flat back, about 2700 fps - that's M2 ball.

    So the closest you can really get to the original cartridge is probably something that copies M2 ball, Prvi Partizan makes a Garand round that I use and like. I haven't shot it past 300 meters though. As previously noted, the front sights are changeable to adjust your point of impact at various ranges. Mine seems to shoot a little low, and I've considered changing the front sight blade. You can find them on ebay.

    Here's a link, it's about Parker Hale sights, but if you scroll down it will show zero instructions on various Enfields, to include the P14, and references the front sight height calculations you can make.
    Service and Target Rifle Sights ~ A.G. and A.J. Parker, Parker-Hale and B.S.A.

  8. #26
    Really Senior Member RC20's Avatar
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    Jack D: I have read the history, whats twisted is maybe the 174 (I think that right) was good for 3000 yards.

    150 grain, a mere 2400 (all theoretically) So what range did they overshoot? Most you would see would be 1000 yard range?


  9. #27
    Contributing Member fjruple's Avatar
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    Quote Originally Posted by Enfield Enforcer View Post
    Hello fjruple,

    that is really interesting. May i ask for the powder-charge of your load ? What about their accuracy in your M1917, for example at 300 und evtl. 700-800 yards ? Many thanks !

    Greetings from Switzerlandicon
    Enfield Enforcer- I usually reload with 45 grains of IMR 4895 or A2520 with that bullet. The M1917 Eddystone I use has a new Critiron .30-06 barrel. I am also using a Parker hale 5B with 1/4 minute clicks. I have no problem cloverleafing 5 rounds together at 100 yards. Unfortunately, long distance ranges in my area are very lacking to say the least.

    Cheer

    --fjruple

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