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Is there a minimum Dram equialent I should be looking for in bulk winchester ammo to get my M1S90 to run 100%?


It's fully broken in, but still hiccups once in a while with some of the wally world bulk packs.


Mostly looking for cheap stuff to shoot for fun.

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Some more info


I have 2 M1S90 and M3T.


My first M1 is an old HK marked I have had for 10 years or more. It has always eaten everything.


But the last couple of boxes I bought from wally world were winchester ones, 3 dram 1 1/8 #8 shot and none of the 3 guns want to cycle it. Just too weak?


Both of the recoil assemblies on the M1s were cleaned and oiled.

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