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Post by blackbahart on Mar 9, 2017 23:36:57 GMT -5
Its cold here so I went through my parts and have a decent 1907 receiver and wood ,a poor 1910 /401 barrel .I bored out the 1910 barrel and turned down a 300 win barrel with great rifiling (take off barrel).Will get locktite tomorrow to secure the liner and then wait for the reamer to arrive .
Worked up a load with a 130 grcast bullet and it should do about 2000fps out of the 20 " barrel with the over all cartridge 1.9" and will feed nicely through the mag . will update once I get reamer and some testing Peter
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Post by blackbahart on Mar 23, 2017 6:15:49 GMT -5
Found another barrel in my parts that was marginal and bored it and lined it also ,so have 2 ready to chamber once the reamer arrives .I am only going to chamber one for the 300 black out and wait with the other and when I find an other 05 or 07 beater and might do it in 30 carbine .
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Post by blackbahart on Mar 29, 2017 23:42:47 GMT -5
reamer should be here next week .Also found a beater on the cgn web and they took my offer so I now have a home for the second barrel . made a piloted drill to bore out barrel bored out wsl barrel liner made from used 300 win barrel,larger end for chamber ready to trim up chamber end chamber end ready to chamber muzzel end trimmed up buffer modified from 1910 barrel to fit 1907 action
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Post by blackbahart on Apr 9, 2017 22:43:00 GMT -5
looks like I figured out why the blow back system uses straight wall designed cartriges . I reamed the barrel to 300blk out and commenced testing .The test loads I made up with 12ge imr4227 and 180gr hndy rn bullets did not cycle action .Shave the recoil weight till it began to cycle Now the strange stuff begins ,did more shaving to get better cycling .It would not cycle ,then the next shots did (same load ) then the the necks would move forward and some would stay correct ...erratic .Did over 100 testing loads with different bullets and 3 powders 4198 wont cycle ,4227 and lil gun and h110 did the strange neck thing I guess 30carbine it is with the other barrel if I cant sort it out . So in a nutshell that is my experience with this endeavor ,even though not a success it was fun ,cheers Peter
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Post by blackbahart on May 10, 2017 21:09:33 GMT -5
UPDATE !!! was experiminting again today and problem solved
I tried some 2400 powder and 110 gr bullet and loaded her up to just past 30 carbine specs .
sucess it works like a charm ! no more shoulder moving foreward and works like a 1907 should .Seems I just needed a faster powder .I was planning for a heavier bullet .
So in the end I have a 30 cal 1907 just a bit faster than a 30 carbine .
Cheers Peter;)
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