TEXASMP40 Posted October 17, 2014 Report Share Posted October 17, 2014 (edited) Title says it all. Looking for the Mfr. who made the best and most dependable full auto 30 rd mags for the the 1928. I am sure this has been discussed before but I could not find in search. Edited October 17, 2014 by TEXASMP40 Link to comment Share on other sites More sharing options...
jim c 351 Posted October 17, 2014 Report Share Posted October 17, 2014 Title says it all. Looking for the Mfr. who made the best and most dependable full auto 30 rd mags for the the 1928. I am sure this has been discussed before but I could not find in search. Texas,You only need to know the least dependable. It the Crosby. All the other manufactures are great.Its the one marked Cco ,US 30 cartridge Cal 45.Jim C Link to comment Share on other sites More sharing options...
buzz Posted October 17, 2014 Report Share Posted October 17, 2014 What's bad about the Cco mag? Link to comment Share on other sites More sharing options...
Kilroy Posted October 17, 2014 Report Share Posted October 17, 2014 I've got several of the Crosby mags and they have all functioned fine in my 28a1 That being said, I have several from each manufacture and havent had any problems to note. Link to comment Share on other sites More sharing options...
TEXASMP40 Posted October 18, 2014 Author Report Share Posted October 18, 2014 Has anyone used the Numrich teflon coated 50rd drums? Link to comment Share on other sites More sharing options...
jim c 351 Posted October 19, 2014 Report Share Posted October 19, 2014 Crosby 30 rd mags were recalled to have the front of the feed lips modified. Failed to seat in some M1 guns. Other makes were OK. Maybe you will get a modified mag and maybe you won't.Jim C Link to comment Share on other sites More sharing options...
jim c 351 Posted October 19, 2014 Report Share Posted October 19, 2014 Has anyone used the Numrich teflon coated 50rd drums?No I haven't.If you have a real Thompson, get a real WW2 drum. At the least get a repro Crosby made in China, if you can find one.Jim C Link to comment Share on other sites More sharing options...
mnshooter Posted October 19, 2014 Report Share Posted October 19, 2014 Has anyone used the Numrich teflon coated 50rd drums?No I haven't. If you have a real Thompson, get a real WW2 drum. At the least get a repro Crosby made in China, if you can find one. Jim CKeep Shooting shows them in stock @$170.00. They work great. The best repro drum available. Link to comment Share on other sites More sharing options...
MG08 Posted October 21, 2014 Report Share Posted October 21, 2014 I cant say any of the WWII mags I have are "unreliable" if in decent condition. I have a couple that were "re-finished" and they over coated them ( they bind) , and some with dents that do impact function. But then I have some rusted pitted ones and some dented ones that work just fine. I have several WWII drums , Bridgeport, Crosby, "Colt" and all work just fine. I cant comment on the new made or repro ones as I have not used them. Link to comment Share on other sites More sharing options...
anticus Posted October 23, 2014 Report Share Posted October 23, 2014 My M1 SBR likes Seymours best. Link to comment Share on other sites More sharing options...
Merry Ploughboy Posted October 24, 2014 Report Share Posted October 24, 2014 I was under the impression that the problem with some of the Crosby mags was that the latch hole was at the wrong height which held the mag too high, and could be fixed by a bit of filing so that the mag sits lower. Could there have been multiple problems? Link to comment Share on other sites More sharing options...
jim c 351 Posted October 24, 2014 Report Share Posted October 24, 2014 I was under the impression that the problem with some of the Crosby mags was that the latch hole was at the wrong height which held the mag too high, and could be fixed by a bit of filing so that the mag sits lower.Not true. The problem was the front part of the feed lip. I had to modify several Crosbys at the feed lip. If you egg the mag catch hole you will probably create more feeding problems. Jim C Link to comment Share on other sites More sharing options...
Kilroy Posted October 24, 2014 Report Share Posted October 24, 2014 I thought the mag catch hole was an issue with the semi auto thompson's? Link to comment Share on other sites More sharing options...
jim c 351 Posted October 24, 2014 Report Share Posted October 24, 2014 I thought the mag catch hole was an issue with the semi auto thompson's?Neil, We don't talk about semi-auto Thompsons on this forum. We pretend they don't even exist. Jim C Link to comment Share on other sites More sharing options...
Kilroy Posted October 24, 2014 Report Share Posted October 24, 2014 I didn't bring them up...anticus did. I put my Thompson on 'Semi'... once Link to comment Share on other sites More sharing options...
anticus Posted October 24, 2014 Report Share Posted October 24, 2014 You people are semi-ist ! My SBR takes unmodified magazines. The subject was mags so I thought it a legit topic of discussion. Link to comment Share on other sites More sharing options...
jim c 351 Posted October 24, 2014 Report Share Posted October 24, 2014 Relax, I was just joking. Jim c Link to comment Share on other sites More sharing options...
anticus Posted October 24, 2014 Report Share Posted October 24, 2014 I know All kidding aside, it is interesting that some mags work well and some don't when they are all (supposedly) made to the same spec. Link to comment Share on other sites More sharing options...
emmagee1917 Posted October 24, 2014 Report Share Posted October 24, 2014 The problem is while they were all made to the same pattern , each manufacturer had thier own tooling . This was true in everything . An expert can tell the differences in Thompsons , Garand , carbine , and M1911 parts by looking close . Little details will ID the maker . In this case , Crosby was making mags for the 1928 Thompsons with no problems . The M1 had a different contour and the feed lip flare would interfere . A simple milling pass would correct the problem. The problem was not noted until after distribution .Chris Link to comment Share on other sites More sharing options...
jim c 351 Posted October 24, 2014 Report Share Posted October 24, 2014 Chris, While everything you said is accurate, I once owned a Crosby that didn't want to lock into a Colt unless given a sharp rap. After modifying it worked OK. I should have also mentioned that the Crosbys are not as nicely made as the rest. Jim C Link to comment Share on other sites More sharing options...
TEXASMP40 Posted October 29, 2014 Author Report Share Posted October 29, 2014 I just received a couple of GPC teflon coated drums and a couple of the Keep Shooting drums. Can't go to the range until weekend after next, but will report back after I test. Link to comment Share on other sites More sharing options...
emmagee1917 Posted October 29, 2014 Report Share Posted October 29, 2014 Chris,While everything you said is accurate, I once owned a Crosby that didn't want to lock into a Colt unless given a sharp rap. After modifying it worked OK. I should have also mentioned that the Crosbys are not as nicely made as the rest.Jim C Hummmm....maybe the Colt made '21s ( '28s ) have a slightly different profile in that area than the Savages or AOs ?Chris Link to comment Share on other sites More sharing options...
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