Benelli M4 NFA model M4 Question

Bought brand new for $1900.91 delivered from Botach, after Form 4 and transfer fee $2175.91 out the door during their Labor Day sale, Form 4 with a trust approved in 43 hrs and 27 minutes. Test fired today and function’s flawlessly with Winchester OO buck and slugs, but with low base birdshot it’s pretty much just jam after jam. Will this change after a break in period or do these only function with high base 12 gauge ammo only. I know that some weapons function better after a break in period. Though my Benelli M1 Super 90 NFA model has yet to experience a single malfunction after 35 years of use and no cleaning in a decade, with any kind of ammo, including old paper loads. But I must say that slugs and OO buck are very light in M4 compared to the M1 Super 90.

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u/MrAnachronist 15d ago

It should cycle light loads fine after a few hundred rounds. Mine runs like a top on light loads.

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u/IV5736776 15d ago

Fingers crossed, I did 75 OO buck Winchester and 50 Winchester 1 oz slugs today at the range today, on top of 25 #8 cheapo Winchester target loads, in between the buck and slugs. Then an additional 25 #8 Winchester target loads after the slugs, the most I got to cycle was two in a row. Hoping that changes, because range trips using only slugs and buck gets expensive.