thompson drum troubles

jetmek

just got a repro crosby L drum for my 1927a1 but it jams badly. shells drag on the bolt pushing it up. scrapes brass off the shells sometimes they get jammed sideways in the feed ramp also seems to fire out of the block and blows the primer out.i think the upward pressure keeps the bolt from fully closing. can this thing be tweaked to feed properly? seems like a little bending on the tin where the shells feed might fix it. or should i not mess with it, send it back to numrich and try to find an origional($$$) ? the gun fires ok with the stick mag

Grasshopper

I might be wrong but I thought the 1927A1 does not accept the drum mags. Hopefully someone will come along and give you info..

jetmek

i believe your thinking of the m1 thompson

Grasshopper

If thats the case and it probably is, send it back,,,ASAP...start jacking with them, its could turn into a nightmare...imo,nambu

cpermd

Contact Merle Bitikofer
503-623-8294
email is tsmgdrumdr@msn.com

He is known as "The Drum Doctor"

He can fix it.

CP

jetmek

to anyone who cares...i found that the opening where the bullets feed out is very sensitive to small changes i bent the tin down slightly so the bullets wont pop up as far and drag on the bolt . voilla! it works perfectly. sent 20 rounds thru without a hickup. thanks all...