M400 Recommended Ammo

i have the m400... rm400-16b-ec... 223 rem 62 gr fmj case of 1000 $344... no affiliation...

Thanks much!

Have a new M400 and had lots of jams and partially ejected rounds shooting Remington 55 grain UMC 223 rounds. What other ammo works best in this gun?

swc1293 said:

I just purchased a M400, what a good choice of ammunition for plinking and general shooting?...Thanks

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I have been shooting Federal Lake City xm855 and Black gun ammo's xm193 lately. They work great in my Windham Weaponry M4. Although the Lake City 420 round cans are sometimes out of stock. $183 to my door from Brownells. Black gun ammo has recently went up on their prices of xm193 from $175 to $229 for 500 round loose pack cans. I'm sitting on plenty of 5.56 ammo at the moment, hopefully it will last until the panic buyers settle down.

Dale, DId you clean it first and relube? I just got a M400E and have about 300 rounds in and it's been flawless regardless of what I stick in it.

kerry201pro said:

Dale, DId you clean it first and relube? I just got a M400E and have about 300 rounds in and it's been flawless regardless of what I stick in it.

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No kidding, I remember spraying down my issue M16A1 with a windex like bottle of BreakFree CLP, we were told to get that rifle soaked with the stuff. AR Actions really need lubrication unless you get a special permanent lubrication baked into your rifle.

I have shot about 500 rounds of Federal XM193F 55 grain fmj's and have had no problems. I had two misfires with Remington .223 55 grain PSP's out of a box of twenty. Could have been a fluke but I haven't bought any more of that ammo.