Frankenstein 1903A4 Project

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lencac

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Well guys here we go again. I just aquired a Smith Corona 1903A3 receiver for $75:eek:. Serial # 3610180. According to the records this is a "serialized" receiver that has never been assembled into a firearm. It's just the bare receiver and it appears to be brand new:scrutiny:. Appears to have never had a barrel installed on it. It has been drilled and tapped for an A4 type scope mount:cool:. So I said ...mmmmmmmmmmm;). I have all the necassary components to complete it. I have a beautiful C-type mil-spec stock that I have bedded. I have a brand new, as coincindence would have it, Smith Corona 4 groove barrel date stamped 4-45:). I have a Remington A4 bolt complete:p. And I have all the other hardware that goes to complete the firearm. I just ordered an A4 scope mount from Sarco. And I have a couple of different quality modern scopes. I think we're on to something here:D.
Will it be "original" ... hell no !! Should it be totally cool and deadly accurate ..... HELL YES !!!!!
I think I'll call it Frankenstein ........... IT'S ALIVE :eek:
 
Ok, Pics

Well, just for you chipperman I took the time to lay it all out for a pic. Of course the receiver and barrel were mated about 5 minutes after I got the receiver home :) I wanted to check headspace specs to be certain it would be correct with the Remington bolt. I installed it to the marks and the headspace checked perfect :D What you see is all the components I have to work with. Interestingly take note that it is sans the thumb relief cut into the left side. When I looked up the serial # it was annotated that these receivers that were "serialized" but never assembled had no thumb relief cut. Also I included the headspace gauges I used and the armorers field test bolt for 1903s. It is used if the headspace is out of spec to determine if it is the bolt or the barrel chamber that is at fault. Also I removed the front sight assembly from the barrel and blued the exposed surface.
Anyway this is what I have to work with. Just waiting for the 1903A4 scope mount to arrive so I can put it all together.
http://img266.imageshack.us/img266/5554/img3123gu1.jpg
http://img404.imageshack.us/img404/6199/img3125bq9.jpg
http://img404.imageshack.us/img404/9099/img3124dm7.jpg
 
If it's never been assembled into a rifle, then you actually have the option of building it into a bolt-action pistol. Just a suggestion in case you hadn't thought of it.
 
Thanks for the suggestion Masterofmalice. Believe it or not that was a toss up weather or not to do that to a fine 1903. But then I came to my senses and said to myself "uh, that would be really stupid." Now maybe a $79 Mosin ... that might be ok. But to do that to a 1903 ........ I would rather poop razor blades:eek:
Oh and P.S. is that Hebrew text in your signature?
 
P.S. is that Hebrew text in your signature?
Greek.

Pray tell, what makes an A4 bolt an A4 bolt? I have a Nat'l Ord 1903A3 that I de-bubba-ed that I was thinking of turning into a 1903A4, but I now have some reservations if the bolt won't work... :uhoh:
 
Well guys here we go again. I just aquired a Smith Corona 1903A3 receiver for $75. Serial # 3610180. According to the records this is a "serialized" receiver that has never been assembled into a firearm. It's just the bare receiver and it appears to be brand new. Appears to have never had a barrel installed on it. It has been drilled and tapped for an A4 type scope mount. So I said ...mmmmmmmmmmm. I have all the necassary components to complete it. I have a beautiful C-type mil-spec stock that I have bedded. I have a brand new, as coincindence would have it, Smith Corona 4 groove barrel date stamped 4-45. I have a Remington A4 bolt complete. And I have all the other hardware that goes to complete the firearm. I just ordered an A4 scope mount from Sarco. And I have a couple of different quality modern scopes. I think we're on to something here.
Will it be "original" ... hell no !! Should it be totally cool and deadly accurate ..... HELL YES !!!!!
I think I'll call it Frankenstein ........... IT'S ALIVE


Lenac,

I am green with envy. Seriously, I really hate you right now. (kidding) :)

Good luck with the project. Take your time, enjoy the project, and then POST LOTS of pictures here.


-- John
 
Looks like a really nice project I add to the envy. The one thing that did make me cringe a little is the bipod. Bill
 
Nice. :cool:

The one thing that did make me cringe a little is the bipod

I agree with that. ..and where does the power strip go? j/k

Do you have an older scope you can mount that will look more period?
 
Dionysusigma, yes baba louie is correct. I don't think there is anything else that makes it special other than the handle made to clear a scope.
wcwhitney, I threw the bipod in cause as you can see the stock has the swival attachment installed in the forend. I have used this stock previously for other builds I've done. I have bedded this stock in my own fashion for use as a test stock and the bipod is one thing I use to help when accurracy testing an 03 off the bench. The stock when new was never of sufficient quality dimensionally for a finished product, or at least to my standards. The reason the barrel channel at the muzzle end comes up to far when the receiver is tightened into the stock. So I had to "modify' it by reworking the mating portions of the stock inside and deepen the barrel channel to get it to not put undue upward pressure on the barrel when put together. In these 03 mil-spec stocks with the full forend the trick is to bedd the receiver pretty much as you would anyother and to hold the barrel securely in the forend, both from the bottom and the top WITHOUT having the barrel be pulled up, down, left or right. But being as this is Project Frankenstein, an assembleage of pieces and parts ..... I'll use it.
Here's a couple of pics of the stock bedding and handguard modifications I've done if anyone is curious.
This is the bedding of the entire receiver portion of the stock. Done with epoxy and steel shim to provide encasement for the recoil lug portion of the receiver.
http://img245.imageshack.us/img245/9580/img3132by7.jpg
Close up of the encasement portion. Steel shim is used from automotive feeler gauges. It works wonderful cause it also allows you to align and center the receiver and barrel in stock and barrel channel by using different thicknesses of feeler gauge.
http://img413.imageshack.us/img413/8862/img3134jk3.jpg
http://img20.imageshack.us/img20/7196/img3129js2.jpg
This is the rear portion of the stock. Note the expoxy bedding around the rear tang and the wings where the receiver splays out above the trigger rail. Also note the metal sleeve insert in the rear hole. Its length is absolutely critical to this process. If it is too short it will cause the receiver to have undue stress when tightened. Too long and it will not allow the trigger guard to lend support to the receiver for regidity.
http://img91.imageshack.us/img91/8255/img3128gf7.jpg
http://img265.imageshack.us/img265/5753/img3133kq7.jpg
The under side of the handguard. Note where the metal spring clips are I have simply placed pads using the hook side of velcro with adhesive backing over the clips. This provides the necessary clamping downward force on the barrel to keep it tightly in the barrel channel.
http://img248.imageshack.us/img248/9673/img3130to8.jpg
This is the top side of the handguard showing some minor inletting to provide clearence for the front bell of the scope. When it is all finally fitted I no doubt will need to do more inletting cause I will mount the scope so the bell is literally as close to the barrel as possible.
http://img340.imageshack.us/img340/1892/img3131um8.jpg
This is the receiver and triggerguard together. Couple of things here. One note how the rear screw sleeve length affects the clearence between the receiver and the side walls of the magazine. You want the magazine walls to Not contact the receiver. Some filing of the magazine walls may be needed to accomplish this. The length of the sleeve is determined by the stock itself. Measurements must be made. The ideal end result will be that when the rear screw is tightened the rear tang of the receiver, the rear tang of the triggerguard and the sleeve will all be held fast while providing compression of the wood in the stock in between. Not enough compression, the sleeve is too long. Too much compression not allowing the screw to come tight against the sleeve, inlet the stock on the triggerguard side a bit until it is right. Same is true for the front. You want the front screw to come tight against the receiver while providing compression of the wood of the stock between. Measurement is required. That is the square area behind the recoil lug and in front of the magazine well. So when it is all put together the stock is clamped tight in between the receiver and the triggerguard and the triggerguard is only contacting the receiver at the front and rear screws. If you did it correctly there will be no undue stress against the receiver yet everything will be tight as a bug in a rug:) As you can see in this picture because this is not the actual sleeve installed in the stock it appears that the rear of the magazine walls are contacting the receiver and would require some filing of the magazine walls.
http://img142.imageshack.us/img142/1919/img3135vm8.jpg
It's all very simple really. Just takes time, some simple tools, and some expertise with your hands and mind.
But as you can see the results if done correctly are spectacular
http://img143.imageshack.us/img143/6379/1903a4400targetij0.jpg
I hope Frankenstein shoots that good :uhoh:
 
Very nice write up.

Note where the metal spring clips are I have simply placed pads using the hook side of velcro with adhesive backing over the clips.

Doesn't the plastic melt when the barrel gets hot?
 
Chipperman, not so far. I think that material is pretty tough though. And besides I can't say as I shoot the thing to a level that the stock catches on fire or anything like that :uhoh: And thanks Chipperman. I love 03s. I think the basic design of the firearm is such that when some modern technology and equipment are incorporated the 03s are not just accurate but they can be deadly accurate. Modern turn-bolt firearms, now don't get me wrong, they are terribly efficient and accurate but they are all just "deer rifles" in cognito. A rose by any other name is still a rose. Modern just don't have the personality for lack of a better way to put it. 03s are 100+ years old and are still sexy. They are kinda like the MILFs of the rifle world:evil:
 
Chipperman, I do have an older scope and I may use it for photos. It's a Weaver K 2.5, probably WWII vintage. The problem with "older" scopes is the same problem as with 57 Chevys. You can dress 'em up all you want .... but they still drive like old cars. My goal, and you got to have a picture in your mind of what the end result should be, my goal is this. At the shooting club I belong to we have a gong suspended by chain at 600 yrds. The gong is the top 18 inches of an acteylene tank. I want Frankenstein to ring the gong virtually everytime I yank the trigger. The scope pictured is 4 to 16 power with a 56mm objective, side focus, mil-dot reticle. The scope and the rifle fell in love with each other the moment I introduced them. Now they are inseparable and are deeply in love :eek:
http://img101.imageshack.us/img101/4858/img3136qu9.jpg
 
wcwhitney and Jwarren my intension was not to make you green with envy, but I do apprecieate your encouragement. My intent was to get you guys interested in and understanding what a wonderful piece of craftsmanship the Springfield 1903s and it variants are. The things I have come to understand about these firearms and the processes I've learned, I learned on the job so to speak. I enjoy sharing this stuff with you guys. Perhaps you will take one and use this stuff and eventually show me things.
03s have a big following of fans as I am coming to realize. Are they cheap like Mosins .... hell no! But what a wonderful piece of Americana. Chevys and Springfields ..... Springfields and Chevys:D
Here's a few pics of my other 03s
This is my last custom build. Completely bedded same way as my write up, Krieger match barrel, Timney comp trigger, Leupold VariX II 6x18 target scope
http://img517.imageshack.us/img517/4416/img3037nf4.jpg
http://img143.imageshack.us/img143/6379/1903a4400targetij0.jpg
Another custom build. Remington 1903A3 built back to totally mil-spec configuration. Brand new 2 groove Remington barrel, completely accuraized same way as write up.
http://img297.imageshack.us/img297/9149/img2888ms2.jpg
Original scoped National Match Springfield 1903
http://img411.imageshack.us/img411/1322/img2386mj5.jpg
Arsenal rebuilt Remington 1903A1
http://img155.imageshack.us/img155/9462/img2630dm2.jpg
My other Remington 1903A3 I built back to original with scant stock
http://img141.imageshack.us/img141/6858/img2783vs9.jpg
And my $350 Smith Corona that has been sporterized. I usually am repulsed by sporterized 03s but this one was done really, really nice. Whole thing polished and deep, deep blued. Weaver K3 scope with Pacmyer detachable mount and Redfield peeps installed. Perfect 4 groove bore. Possibly the nicest bubba'ed 03 I've seen.
http://img263.imageshack.us/img263/3519/img2363ku5.jpg
http://img230.imageshack.us/img230/3849/img2371by4.jpg
 
Scope mount and handguard modification

Well, here's how the mounting of the scope came out.
http://img252.imageshack.us/img252/4271/img3137wf4.jpg
There is exactly .010 in clearence between the barrel and the bell of the scope:) I did have to drill and retap the receiver for larger screws. I went from a 6-48 screw to a 8-40 screw because that's the size of the holes in the mount.
Here's a pic of the modification to the handguard to clear the scope.
http://img136.imageshack.us/img136/6347/img3141nl7.jpg
So far, so good :D
 
I hate you for such a great find .......... only kidding :neener: If only I didnt have so many student loans to pay off Id get myself another 1903......or another Garand.....or both :D Im thinkin about ordering a new stock and glass bedding it for my 1903. I couldnt bring myself to bed the original one.
 
Garandowner, I agree, I wouldn't do that to an original stock either. A new stock and handguard from Numrich will cost you $200. They are of excellent quality.
 
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