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-   -   1903a3 barrel change (http://forums.thecmp.org/showthread.php?t=69864)

lapriester 02-29-2012 05:25 PM

1903a3 barrel change
 
Let's see if this works. Excuse the ads but that's the way it is with free file sharing programs. You should be able to download and save the PDF file from here by clicking on it in the center of all the crap around it.

http://www.mediafire.com/?lq2vkuk82a43ybt

OK, just for the heck of it, here's the link to the Power Point Slide show too. Enjoy:

http://www.mediafire.com/?gg0032lhuj52enl

Enjoy,

Larry

GGaskill 02-29-2012 06:19 PM

Don't know how long Larry's stuff will remain available on that free site but it's on my site too (at least as long as I keep paying for it) without ads:

M1903A3 Barrel Change Procedure

cbs1473 02-29-2012 07:40 PM

Larry,

I just got done checking the PP out. I am trying to decide if I want to attempt this myself, and you may have help make my mind. I love projects and this seems like a fun one. I can't thank you (and the wife) for taking the time to put this together. Good work, and I will post pics of my job when finished.

Chris

Moorem1s 02-29-2012 07:55 PM

:GS:Great Job Larry!!!!!

mike miller 02-29-2012 09:52 PM

Very well put together, Larry. I did two A3's and two 03's yesterday. The white paint marker is a good idea. I couldn't find mine and I ended up having to take the BR's out of the vise a couple times to get a good look at the marks. Didn't have time to ream them...I'll do that tomorrow.

Again, great job!

lapriester 02-29-2012 10:29 PM

Yeah...tell me about it. I had the wife watching the marks as I tightened and she told me they were perfectly lined up. I should have known better when she didn't have her glasses on. I, unfortunately, believed her and started loosening the action wrench and almost had it off before I realized I hadn't looked myself (old age makes you forget things:)). When I looked, guess what....I had to tighten back up and give it another bump or two to get proper line up.

Well, at least she helps. She took most of the pictures.

Larry

Quote:

Originally Posted by mike miller (Post 546411)
Very well put together, Larry. I did two A3's and two 03's yesterday. The white paint marker is a good idea. I couldn't find mine and I ended up having to take the BR's out of the vise a couple times to get a good look at the marks. Didn't have time to ream them...I'll do that tomorrow.

Again, great job!


elementfreak431 02-29-2012 10:46 PM

Absolutely outstanding. Very simple and easy to follow. Great job thank you so much for posting this

Ray Brandes 03-01-2012 06:12 AM

Nice Job Larry!

I have barreled a few now and here is a simple way to determine how much to remove from the barrel shoulder;
"With the new barrel hand tight on the receiver, the marks should be apart with 16 degrees to go. Measured with a caliper the distance between the two lines should be .167". A new barrel may have double that so you may have to skim a few thousandts off the barrel shoulder. The barrel diameter is 1.200" and you can do the math if you want. I have worked up a simple formula; Measure the distance between the marks when hand tight. Subtract .167 to find the difference. Multiply the difference by .0265 and the result is how much you have to skim from the barrel shoulder."
From my drill rifle web pages at:
http://www.foundry.ray-vin.com/firea...drillrifle.htm
and
http://www.foundry.ray-vin.com/firea...front2back.htm
Regards, Ray

JakeM 03-02-2012 04:53 PM

Barrel change question?
 
I screwed the receiver on hand tight and I have 9/16 of an inch between the reference marks. Is it ok to start using the wrench with this measurement?

lapriester 03-03-2012 02:33 AM

Quote:

Originally Posted by JakeM (Post 547755)
I screwed the receiver on hand tight and I have 9/16 of an inch between the reference marks. Is it ok to start using the wrench with this measurement?

9/16" is more than I would attempt I'm afraid. Mine was under 1/2" (about 7/16") and I was able to draw it enough to match the lines but it was pushing the envelope by quite a bit. I only pushed mine some because the take off barrel, when screwed back on flush, had a good 3/8" to go and it was originally on the rifle. Being able to draw an additional 1/16" didn't seem over the top to me and it wasn't. 9/16" is just too much to chance it. You may have to have the shoulder touched back a bit to keep from possibly damaging something.

Larry


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