Category: 1903a3 rear sight adjustment


1903a3 rear sight adjustment

By Sazilkree

Remember Me? What's New? Forum Gunboards. Results 1 to 5 of 5. Thread: 03A3 rear sight adjustment. Join Date Dec Posts 7, I shot my 03A3 for the first time today. It groups pretty well at 50 yards with M2 ball given I cannot see irons worth a damn. However, to get it centered on the target I have had to wind the rear sight adjustment almost all the way over to the right.

Is this a product of my peculiar eyesight or should I be looking for a bent barrel or other such horrors? I really do wonder if it my eyes because my FN49 also grouped a little left when I shot that today. It was a bit breezy today, but I cannot imagine it would shift M2 four inches left over 50 yards.

Cheers Steve. Damn the expense, use your turn signals today Join Date Dec Posts 1, Have a 20 year old shoot it,and see if the results are the same. You might check the rear sight. Join Date Dec Posts Before answering I looked at my own MA3, on which I've adjusted the rear sight to 4 clicks left windage to center the group at yards--but eyeballing the rear sight, it appears to be to the right of center in its dovetail.

My rifle has a witness mark on the rear sight base which is out of alignment with the corresponding mark on the receiver. You might look at your own rifle and see if your entire rear sight assembly is centered on the receiver.

If you only shoot your rifle at 50 yards and you've adjusted the sight to hit where you point it, I wouldnt worrry about it.Log in or Sign up.

Carolina Shooters Club. Joined: Apr 12, Messages: 5. My dad bought this rifle Smith-Corona xxxx at a gun show many years ago, and put it in the closet. Two years ago, after sending through about five rounds, the rear sight just fell off. My son was still busting targets without it, but I'm thinking we should fix it.

Do all the first-time posters start this way? Looking at the rear sight base, it is clear the base was brazed to the receiver.

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Both bear residue from the brazing. The U-shaped sight base has the female dovetail I expected from the parts I've looked at online, perpendicular to the line of sight. But the receiver also has a female dovetail, parallel to the line of sight. I assumed there was a part missing that adapted the two together, but I don't see any such part in diagrams online.

Is this rifle not an A3 or am I missing a piece? Sign me, In need of advice. Remove Advertisement.

1903a3 rear sight adjustment

Any chance of getting a few pics? That would help a lot.

03-A3 rear sight adjustment

Uncle AlvahApr 16, Daisy DusterApr 16, Joined: Jan 27, Messages: Location: Charlotte. It sounds to me like someone has made modifications to your rifle. The sight does have a female dovetail. The receiver should have a male dovetail. The brazing is a clue. Rear sights were staked, not brazed. If you could get a picture that would be a big help. GardnerApr 17, The A3 rear sight had no "adapter" to install the rear sight.


As shown in Uncle Alvah's link, the 03A3 rear sight was a simple dovetail fit. Rear sights were secured using either staking, set screw or a combination of both. Sounds like someone did some work on the rifle if it was brazed in place. If there is no damage to the dovetails, it shouldn't be too hard to repair.This is a discussion on M Rear Sight Manual? I know Is there an manual or source for instructions on how to fully utilize all the features of the leaf sight on the M?

I know about the battlesight, and the lowest peep aperture for short range shooting I thinkbut there are 4 to 5 other notches and peeps on the thing. Curious minds want to know. I'd also love to hear some wisdom from those-who-know on this! I also would love to have some information on the 03 sight use and markings as well. The ladder sight on my RI seems pretty loose and with the battle sights it shoots 10" high at yards.

I started using the ladder sights and at the lowest setting it still shoots 4" high at Hate to start filing the front sight. Any input would be appreciated. Regards, BJBoehm.

1903a3 rear sight adjustment

Battlesight for the M shooting M Ball is -- ready for this? This will put the bullet over 2 feet high at yards by my quickie ballistics software.

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Infantry combat engagement ranges during WW1 are the same as they are today. Most under meters. Those Doughboys had to keep the ladder up if they wanted any chance of hits at normal combat ranges. Thanks, Chuck S.! I recently got the Ray-Vin micrometer, which has made a world of difference.

I find that my '03, aiming through the little hole, is on-target at yds the limit of my range, alas at the 0. That said, I would love to hear an explanation of the triangle-shaped aperture, among other things. The leaf sight strikes me as something very carefully designed, with every detail serving some specific function.

The angled track, for example, to account for bullet-spin-induced lateral motion, is too cool to be believed.The thing is, at yds, im still needing to dial in yards of elevation, and a full tick mark of right windage to be in the black. Is this normal?

Is it possible the blade is too tall? Did they come in multiple sizes?

1903a3 rear sight adjustment

There are different sizes. If you search the forum for A3 front sight you will find lots of information. I have the opposite problem as you. I am 6 - 8 inches or so too high at yards with the rear sight bottomed out. Maybe we should swap sight blades. Simple--take a proper file and lower your front blade. It probably needs a cleanup anyway. Getting the dings and burrs off and leaving sharp edges helps your sight picture The rear sight base can be moved to correct windage zero, but I wouldn't bother if you have enough clearance on each side.

You can also smack the front sight blade for a small windage adjustment, but carefully--they are a bit brittle. Good Shooting Check to see if there is a letter stamped in the side of your front sight blade, some had them, some didn't "A" being the tallest. There are 5 different heights, if it's not marked you'll have to remove and measure it.

Make sure you have the right punch to do it, buy one if needed cause they're easy to make a mess of if you don't. As far as the rear sight, I wouldn't recommend messing with it.

They were staked in place very heavily. If you have to, remove the windage knob, screw and sight assy. The older Remington sight bases have a set screw on the front right corner, loosen it slightly. Trying to drive the sight from outside usually bends the ears, drive the appropriate direction from the inside lower corner using a brass drift. Be conservative, move only what you absolutely need to.

Right now it shoots low with the rear bottomed out at yds. Hence I have to raise the rear to yds coincidentally the same I had to dial in when the Lyman 47 was on there.Remember Me? Page 1 of 2 1 2 Last Jump to page: Results 1 to 20 of Thread: Sight adjustment for yards with a3. Thread Tools Show Printable Version.

Sight adjustment for yards with a3 results are in So i have my yard load doing pretty well. I want to shoot at a yard match coming up. Where roughly will my sight need to be set to. I have 5 sighters so the close I can get the better. Load is 16 grains and a gn flat nose tumble lube design. Last edited by mac; at PM. Off the top of my head, here's my SWAG: My best guess as to your velocity is that it is about 1, fps with your load.

With your projectile going that speed you are going to get about an 18 to 20 inch drop at yards from your yard zero or about 9 MOA depending on the ballistic coefficient of your flat nose boolit. With your A3, one MOA is about. Your sight if original was calibrated for M2 Ball ammo in yard increments from to yards.

The trajectory differences between and yards for M2 Ball is about inches or nearly 5 MOA. Given that and the estimate on your load's trajectory from to yards, you should be about on by setting your sight at 6 on the elevation scale. Due to the coarse settings on the original 03A3 sight, you may have to crowd the bull or take a-line-of-white to completely zero up your load at the match.

With your load's sedate velocity, any wind is going to affect your load's deflection so pay attention to the wind's direction and speed. Fortunately, your 03A3 sight can be used to compensate for deflection easily.

Let us know how it all works out and good luck at the match. Last edited by Scharfschuetze; at AM. Keep your powder dry, Scharf. I found with cast bullet loads in the 'A3 for - yard shooting that selecting a cast load to use it was best to file the front sight down.

1903a3 sight adjustment

With the rear sight set at the lowest range I filed the front sight down so the group centered on a 6" bull at yards using a 6 o'clock hold.

That then gave the finer multiple adjustments on the lower end of the '03's rear sight to use for elevation corrections to yards using the "A" Bull at and yards, 6 o'clock hold so the group centered in the bull.

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I also preferred cast loads that ran - fps for the longer ranges. Larry Gibson. Originally Posted by Larry Gibson. A good receiver sight certainly makes them much more shootable although in some matches the sights need to be "original".

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I put a new 4 groove RA barrel on it.It was officially adopted as a United States military bolt-action rifle on June 19,and saw service in World War I. It was officially replaced as the standard infantry rifle by the faster-firing semi-automatic eight-round M1 Garand starting in It remains popular as a civilian firearm, historical collector's piece, a competitive shooting rifle, and as a military drill rifle.

During the war with Spainthe M Mauser used by the Spanish Army gained a deadly reputation, particularly from the Battle of San Juan Hill where Spanish regulars significantly delayed the advance of 15, U. The Spanish soldiers inflicted 1, U. Likewise, earlier in the day, a Spanish force of regulars armed with the same Mauser rifle under Spanish General Vara Del Rey held off General Henry Ware Lawton 's Second Division of 6, American soldiers and an Independent Brigade of 1, men for ten hours in the nearby town of El Caneykeeping that division from assisting in the attack on the San Juan Heights.

Army board of investigation was commissioned as a direct result of both battles. They recommended replacement of the Krag. The M not only replaced the various versions of the U. While the Krag had been issued in both a long rifle and carbinethe Springfield was issued only as a short inch barrel rifle in keeping with current trends in Switzerland and Great Britain to eliminate the need for both long rifles and carbines. The two main problems usually cited with the Krag were its slow-to-load magazine and its inability to handle higher chamber pressures for high-velocity rounds.

The United States Army attempted to introduce a higher-velocity cartridge in for the existing Krags, but its single locking lug on the bolt could not withstand the extra chamber pressure. Though a stripper-clip or charger loading modification to the Krag was designed, it was clear to Army authorities that a new rifle was required. After the U. Inthe bolt action. Army during the s, though the rifle was not formally adopted.

The Navy adopted the Modeland later different style Lee Model a 6mm straight pull boltwhich saw service in the Boxer Rebellion. In Army service, both the and 6mm Lee were used in the Spanish—American War, along with the.

The Lee rifle's detachable box magazine was invented by James Paris Leeand would be very influential on later rifle designs. Other advancements had made it clear that the Army needed a replacement. Inthe U. The Krag officially entered U. A prototype rifle was produced in ; it was very similar to Rifle No. Army rifle trials of This design was rejected, and a new design combining features of the Krag rifle and the Spanish Mauser was developed. Springfield began work on creating a rifle that could handle higher loads around the turn of the 20th century.

Taking a cue from the Mauser Gewehr 98a large safety lug was added to the side of the bolt behind the extractor, which would engage the receiver bridge and prevent the bolt moving rearwards. The bolt handle was also bent downwards, to make operation of the bolt faster. The Springfield Model almost entered production. Springfield was sure enough that the Springfield Model prototype would be accepted that they began making some parts, but it was not accepted and further changes were asked for.

Following then-current trends in service rifles, the barrel was shortened to 24" after it was discovered that a longer barrel offered no appreciable ballistic advantage, and the shorter barrel was lighter and easier to handle. This "short rifle" also eliminated the need of a shorter carbine for mounted troops or cavalry. This new design was accepted, type classified and officially adopted as the United States Rifle, Caliber. The M became commonly known among its users as the "ought-three" in reference to the year '03 of first production.

The War Department had exhaustively studied and dissected several examples of the Spanish Mauser Model rifle captured during the Spanish—American War, and applied some features of the U.

Krag rifle to a bolt and magazine system derived from the Mauser Model 93, to produce the new U.Log in or Sign up. Oct 12, 1. How do you adjust the rear sight of a A3 for elevation. The windage is easy as it has a knob that moves in distanct clicks. For elevation, the peep sight appears to move up and down a stair type setup and is held down by a small screw. How do you change this without a small screw driver handy or am I just looking at the thing wrong? LivingstoneOct 12, Oct 12, 2.

It's held by friction. Just slide it. PaperOct 12, Oct 13, 3. So do I just loosen the little screw that holds the peep sight down and it will slide back and forth?

LivingstoneOct 13, Oct 13, 4.

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Don't touch the screw. Just push the sight up or down the ramp. The screw is just there to hold the spring tension onto the grooves that hold the sight.

1903a3 rear sight adjustment

It'll be snug and a little difficult to push, but it's supposed to be that way so it doesn't move because of recoil. PaperOct 13, Oct 13, 5. As you look at the sight from the back of the rifle, do you use the right front part of the sight to line up the yardage on or the mark on the left side to line up the yardage?

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I've shot a few hundred rounds through the rifle and had pretty good look just leaving it all the way forward, but at three hundrad yards it shoots a little low.

Oct 13, 6. The same side that lines up with the numbers, but remember that those are suggestions. I have Carbines which one will shoot dead nuts at and the next will do the same at the marking for