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Rebarreling Marlin X7 #14464101 01/13/20
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Jason280 Offline OP
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I picked up an older Marlin X7 in .30-06 for cheap, primarily to rebarrel to .257 Roberts. Anyone rebarreled one with a prefit Savage barrel? Any tips or tricks to do this without a set of go/no go gauges?


Re: Rebarreling Marlin X7 [Re: Jason280] #14464216 01/13/20
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rickt300 Offline
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I put a Adams & Bennet 22-250 barrel made for a savage on my XS7 with zero issues, did not have to change a thing. I also used factory round to headspace the barrel by bringing the barrel in to a stop on it and backing the barrel off just a bit before tightening it up. Make sure the case is seated against the bolt face and not stopped by the extractor! I have had zero problems doing this but if your not comfortable doing it this way by all means get your hands on some Go-NO Go gauges. Supposedly the Marlin's bolt face is deeper than the average Savage bolt face and you have to face the barrel off .015 to clear the front of the bolt.

Re: Rebarreling Marlin X7 [Re: Jason280] #14464253 01/13/20
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Jason280 Offline OP
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Thanks for the information!

Re: Rebarreling Marlin X7 [Re: Jason280] #14464339 01/13/20
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260Remguy has been all over this.

If he doesn't post up something here, shoot him a PM.

FC


Originally Posted by Victor Davis Hanson
Voters in 2016 bristled at redistribution, open borders, bigger government, and higher taxes, but progressives are now promising those voters even more of what they didn’t want.
Re: Rebarreling Marlin X7 [Re: Jason280] #14464467 01/13/20
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I had to have a smith remove .005 off the back of the barrel, otherwise the front of the bolt hit the back of the barrel before the no go gauge touched. Other people claim no problems.


TANSTAAFL
Alpha

Re: Rebarreling Marlin X7 [Re: Jason280] #14464480 01/13/20
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Jason280 Offline OP
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I have a couple lathes, so I could always take some off the rear of the barrel...but wouldn't that require a finish reamer and set of go/no go gauges? I wonder if I wouldn't be better off simply buying a prefit McGowan barrel....

Re: Rebarreling Marlin X7 [Re: Jason280] #14464510 01/13/20
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rickt300 Offline
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No it really doesn't require to be finish reamed. All you want is a bit more of the case sticking out of the barrel to clear the bolt face recess. You will have to deburr the shortened barrel where you turned it off. I even saw a bolt where a guy filed the front of it even with the top of the extractor and it did work but the proper place to remove material is from the barrel.

Re: Rebarreling Marlin X7 [Re: Jason280] #14464672 01/13/20
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Jason280 Offline OP
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Any suggestions on which "brand" barrel to go with? Plan is to make a hunting rifle for my 11yr old to use next season.

Re: Rebarreling Marlin X7 [Re: Jason280] #14464824 01/13/20
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qotsarock Offline
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ER Shaw and a few other barrel makers will sell you a barrel set up specifically for the x7. The Remington 783 is also equivalent.

Re: Rebarreling Marlin X7 [Re: Jason280] #14464843 01/13/20
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rickt300 Offline
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I have gotten good takeoff barrels from Savage rifles, a very accurate ERShaw 35 Whelen barrel too but my next barrel will be from Criterion or Preferred barrels.

Last edited by rickt300; 01/13/20.
Bravo

Re: Rebarreling Marlin X7 [Re: Jason280] #14464892 01/13/20
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McGowen makes barrels for this don’t they ?


Spot shooter
Re: Rebarreling Marlin X7 [Re: Jason280] #14465050 01/13/20
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I've rebarreled at least a dozen Marlin X guns with A&B and Savage take-off barrels. Since I have a lathe and finish reamers, I always trimmed the Savage specs barrels back 0.05" and recut the chamber to insure correct head-space. The Marlin bolt faces have a slightly deeper recess than the Savage bolts so you can get a false head-space reading if the front of the Marlin bolt touches the rear of the Savage specs barrel before the head-space gauge has touched the front of the chamber.

I know that a lot of people screw Savage-specs barrels into a Marlin X action, head-space it by feel, maybe with a layer or two of packing tape on the case head of a factory round, and call it good.

I've done X guns in 22-250, 250-3000, 257 Roberts, 6.5 Creedmoor, 260, and 7x57.

Re: Rebarreling Marlin X7 [Re: Jason280] #14465080 01/13/20
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Jason280 Offline OP
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I actually considered 7x57 at first, simply because I already have dies, brass, and bullets...but on the other hand, this would give me a reason to finally pick up a Roberts.

Re: Rebarreling Marlin X7 [Re: Jason280] #14465123 01/13/20
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Jason280 Offline OP
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Actually, the more I think about it, may be the perfect time to go ahead and put together a 6.5x55. I have a 1900 Swedish Mauser that I just started picking up components for, not sure how much more recoil it would have over the .257 with factory ammo.

Re: Rebarreling Marlin X7 [Re: Jason280] #14465161 01/13/20
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Whatever you do make sure you strip the bolt so the ejector doesn’t give you a false reading as well

... and 260 is VERY right... it’s easy for someone to confuse the nose of the bolt binding vs. the gauges....


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Re: Rebarreling Marlin X7 [Re: Jason280] #14465184 01/13/20
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Jason280 Offline OP
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Makes sense, now I just need to decide on a chambering and barrel manufacturer.

Re: Rebarreling Marlin X7 [Re: Jason280] #14468838 01/14/20
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Do a 6.5x57 and your bolt face will already be the right size. Easy to neck down 7x57 or neck up 257. It is the truly improved 257 Robert's because it gets you away from 25 cal bullets and into the much better 26 cal. Just go 8 twist 6.5 barrel for the win.

Bb

Re: Rebarreling Marlin X7 [Re: Jason280] #14468930 01/15/20
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Jason280 Offline OP
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My understanding was that even though the 6.5x55 nominally runs a .480" case head, most current brass is slightly undersized (while most of the bolt faces are slightly oversized)….basically, it should run fine in a standard .473" cartridge bolt. I'll check mine with a few cases just to be sure.

260, do you recommend using a barrel wrench or just a simple barrel vise? I have some barrel vise inserts I can use with a large vise, but no action wrench. I don't mind buying one, but not sure I want to buy one just for this project...although, if it works out well, I may look for a short action XS7 to build a .250-3000 on.

Re: Rebarreling Marlin X7 [Re: Jason280] #14471883 01/15/20
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260Remguy Online Content
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I just use a pipe wrench padded with a bicycle inner-tube.

Re: Rebarreling Marlin X7 [Re: Jason280] #14480672 01/18/20
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vabowhntr Offline
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I use a savage nut wrench and a 700 action wrench. Just picked up a barrel vise though so I might use it next. I have 2 of the x7’s that I bought barrels for from McGowan barrels. Latest in 6.5 creedmoor, although the savage barrel in 6.5 cm I sold was more accurate with 140 gr bullets.

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