FR-8 Spanish Mouser

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Fitzpatrick posted this 2 weeks ago

I have some what of a mystery 

some years back I bought a FR-8 mouser chamber in 308 or that's what I was told on the rifle it says 7.62 cal. and that's it. Well it was never a very good shooter 2 inch groups at 50 yds. with jacketed bullets, now up to date I wanted to see if it would shoot cast so I made a pound test with a case filled with lead and a soft bullet that I new would get into the riflings and this is where it get strange the case seems to have the neck of the 30-06 in length but with a shoulder in the right place for the 308 like it had been chambered with a 30-06 reamer but short chamberd which gives me a case length of 2.120 . so I cut down some 30-06 brass run through the 308 sizer die and trimmed to 2.115 and loaded with my favorite 308 load and low and behold 1 1/2 inch groups at 100 yrd. right off the bat

 has anyone else with one of these rifles had this happen ? 

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Fitzpatrick posted this 2 weeks ago

Top case is a standard 308 win case, middle case is a Fr-8 Mauser case, bottom case is a standard 30-06 case.

 

 

 

 

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Ken Campbell Iowa posted this 2 weeks ago

good story.  never give up !

i wonder what the bore and groove diameters are ? 

if you load metal jacketed bullets, you might consider your case necks are slightly thicker .. check chamber neck .clearance .

i like the classic mauser actions, whispers of past adventures ...

ken

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mashburn posted this 2 weeks ago

Very good point Ken, case necks that are too thick to expand enough to let the bullet escape easily can possibly cause unwanted activities.

Mashburn 

David a. Cogburn

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Lee Guthrie posted this 2 weeks ago

OK, now you've got me thinking.  AGES ago I bought an FR-8 (along with a couple other friends).  It was to be a cast bullet gun for walkabouts.  It didn't shoot worth a hoot, but it was cheap and handy looking.  It's been hiding in a safe for decades.  I wonder.  New project: get out the cerrosafe and lets see what the chamber and throat look like ...........

 

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Fitzpatrick posted this 2 weeks ago

Sorry for the crude diagram, but this is the dimensions of the chamber casting I came up with. I think it gives me everything I need to make a good cast bullet for fit. 

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Fitzpatrick posted this 2 weeks ago

Lee, that is the same reason I got mine it was in new condition still had cosmoline and wrapped in wax paper in a plastic bag looked great but until now wouldn't shoot , hope you end up with the same results as I , Nothing like new hope in a Old friend.

let us know how your chamber casting comes out if you don't mind.

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hporter posted this 2 weeks ago

Your post made me curious about my FR8.  So I loaded an empty brass case with a length of 2.015 in the chamber and ran my bore scope down the barrel.

 

 

I haven't done a pound cast or took measurements, but from the looks of things you may not be alone.

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