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#1
03-17-2016, 04:35 PM
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Shooting the Thompson
About six years ago I bought a new semi-automatic Auto Ordnance M1 Thompson. Last Monday while working at the local gun club I got a chance to sight it in and do a function test. It was flawless with my 230 grain lead and FMJ reloads and a moderate charge of Unique. The point of impact at 50 yards was several inches low when shooting from sandbags. This model rifle has fixed sights. Fifteen minutes with a file lowered the front sight .06" and raised the point of impact to dead center on an SR-1 target. All the best...
Gil 
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#2
03-17-2016, 05:10 PM
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Gil,
For two weeks in the 1980s I attended the FBI advanced firearms instructor's course at Camp Smith at Peekskill, NY. Week 2 was entirely spent shooting full auto Thompsons. All our Ball ammo was dated 1942 and at day's end we washed out the bores with hot soapy water, dry patches and oil and did it all again the next day. Our Thompsons were M1927 and M1928 models with the complicated rear sights, as I recall. They were heavy and machined perfection specimens. At the end of the course, most of the attendees preferred the S&W M76 9mm sub guns or the Danish Madsen 9mm subs. We also shot the H&K MP-5 9mm guns that were the most costly and less well liked of all sub guns. Naturally, my agency bought a dozen MP-5s for each division at $1,250 EACH! I retired and spent my time on farm business. Adam
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Adam Helmer
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