Best ammo for 1903/A3?

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DavidB2

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I have a Smith Corona with a with a mint condition Remington barrel. What is the best .30-.06 ammo weight for 1903/a3? I have been shooting 150 grain Federal Hydrashoks; but they seem to shoot high no matter what adjustment I make. Do I need to shoot a heavier bullet? Thanks for any suggestions.
 
but they seem to shoot high no matter what adjustment I make.

Are you saying the sights don't have enough adjustment to shoot low enough or no matter what you adjust bullet impact doesn't change?

The sights should have enough adjustment at 100yds.
What sight picture are you using?
 
150 Hydrashocks should be similar the GI M2 ball ammo, and should be adjustable to POA with the GI sights.

Is your rear aperature slid down to the lowest point? If it is, and its still shooting high, you need a taller front sight blade. Try places like numrich to see if they have taller replacement blades. They have letter designations, with A being the tallest and E being the shortest.

Laphroaig
 
Will try lowest point

I will try again with the lowest point on the slide. Also, I thought about trying Winchester power points to see if there is a difference. If that doesn't work, I will see about another sight blade.
 
If you're looking for bullet weights that give best accuracy in the '03's 1:10 twist, 190 through 220 grain bullets are the ones best suited for tack driving.

Arsenal ballistic engineers designing the M14's ammo with its 22 inch barrel shooting bullets out 100 fps slower knew a 1:12 twist was best for 150 to 172 grain arsenal bullets. That's what the M14's used with great success.
 
This may be a silly advice but make sure the target sits in the middle of the rear peep sight and not the post of the front sight covering the middle of the rear peep sight.
 
Trying 180 grains

I am going to try 180 grain Hydrashoks and see how they work. Several folks have mentioned that 180 grain might provide more accuracy. Also might try the white dot on top of post. Thanks.
 
The two Remington 1903A3 I had liked 168 to 175 grain bullets. I did replace the front sights with the tallest available and filed it down to suit my taste.
 
There were five different front sight blades for the 03A3, A, B, C, D, E.
They installed the one that would give a zero with the rear sight set for the range. Apparently they did not shoot or gauge your rifle when they replaced the barrel.
You need a taller blade, if you can find one.

The standard ammo for that rifle was 150 gr Ball or 165 gr AP.
 
I also have an smith corona, with a new (old stock) Remington barrel. I think the lowest sight setting is 200 yards. I have a taller (but correct) front blade, that helps, I still hold "6-oclock" but its just under the target at 100 +/-.

As far as ammo, 150 grain of several makes shoots very well in mine.

The hold on my 1903/A3 is not that dissimilar of other WW2 era rifles. The hold Under at 100 is the same for my Enfield (Australian no1mkIII).

I think a lot of the ww2 rifles will shoot High at 100 on the lowest sight adjustment.
 
I had an '03A3 and IIRC the rear sight lowest setting was for 200 yards. *just looked online...and yep, 200 is all the way down* So if you're shooting closer than that it's going to tend to be a bit high for sure. The other suggestions about the front sight height are, of course, valid and good for fine tuning whatever load you're using to the sights.

The rifle should have been sighted for the M2 Ball...150 flat base FMJ about 2700 fps as was used in everything, so modern higher performance ammo is going to be delivered faster out of the muzzle which is going to increase the recoil which will tend to throw them higher plus not drop as much out at range. Might be easier to just figure out where it shoots with what you want to use and allow for that Kentucky Windage style.
 
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