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HK M1 tactical....help!!!


Jtwo
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Been lurking the sight for a while after picking up a HK M1 tactical.

 

Anyway, I've taken it to the range a few times and am having bad luck running light loads (2 3/4-7 1/2) out of it. It jams uo bad....

So after doing some research and hear say, I ran some heavier loads to get it broken in. Ran 2 3/4 number 6 shot and it still had problems, ran some 3" loads, some slugs, and some buckshot.....all fired flawlessly.

I've ran about 200 rounds total thru it so far and still not having any luck with light loads.......

Oh, funny thing when I would shoot it from the hip holding it super light it cycled the light loads fine.

Can you give me some recommendations.......thanks.

 

-J

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Your first sentence leads me to believe that you recently bought this gun... is this a new or used gun?

 

Have you taken it apart, including the spring recoil tube, cleaned everything and properly lubricated it? (Proper meaning proper for an M1... as in lightly lubed)

 

Also... it cycles everything with a light hip-side hold?

Have you tried a "combat shotgun" hold instead of a typical rifle hold? Meaning, with body more square to the target instead of angled?

Lame discription, but this hold tends to put the butt more in the meat instead of the bone.

 

Just tossing 'em out to see if anything sticks. :D

 

Happy New Year!

C

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Guest cleefurd

OK I've seen some issues with the light loads, and firm shouldering does correct it usually. That usually indicates an issue with the recoil spring, where-in it will allow the bolt sufficient rearward travel to eject, but not the extra half inch to bump the elevator up so that the next round feeds. End result... empty chamber, loaded elevator. Worse case scenario you have a stove-pipe, or re-chambered spent casing. All owed to excessive recoil spring rate for light loads. There is a guy who makes custom recoil tube and spring sets for "other" Benelli's, to remedy similar issues, so I'm sure something similar might be needed for Super90 owners, but I don't know of anyone who has tackled them yet. The problem is making something "slick and robust enough" to cover the entire spectrum of heavy to light loads... a Holy-Grail of sorts. My M4 and M1 have similar issues if not held firmly, and especially when aiming straight down from a roof (urban combat simulation) where the mass of the bolt and bolt carrier have to overcome gravity induced moment of inertia as well as spring rate opposed to light loads.

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Your first sentence leads me to believe that you recently bought this gun... is this a new or used gun?

 

Bought the gun brand new never fired............

 

Have you taken it apart, including the spring recoil tube, cleaned everything and properly lubricated it? (Proper meaning proper for an M1... as in lightly lubed)

 

Didn't take it apart until the first outing, then lightly lubed it but I didn't mess the spring recoil tube....I'll do that today.

Also... it cycles everything with a light hip-side hold?

 

Yeah, it cycles everything with a light hip-side hold, did understand that one?

 

Have you tried a "combat shotgun" hold instead of a typical rifle hold? Meaning, with body more square to the target instead of angled?

Lame discription, but this hold tends to put the butt more in the meat instead of the bone.

 

Perfect description, I didn't really pay attention to that I guess, but I know what you are talking about as I have done this with my AR.....I'll pay attention to that next time I'm up.

 

Just tossing 'em out to see if anything sticks. :D

 

Happy New Year!

C

 

 

 

Thanks Creeper for all the info.....Happy New Year to you as well!

 

No side saddle or 'stuff' on the receiver? Inertia drives are sensitive to mass.

Funny, I just added a side saddle, when first installed it wouldn't cycle so I loosened the screw and all was well. I didn't have a side saddle on it until this last time up, so I've shot about 200 rds without a side saddle and about 100 with it on. Only hangs up on light loads.....

 

 

Cheers,

 

-J

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Only hangs up on light loads.....

 

 

Cheers,

 

-J

 

Ah well... to paraphrase tactical1, that's about par for a inertia guns. You can only go so light a load before they won't cycle.

 

 

My M4 and M1 have similar issues if not held firmly, and especially when aiming straight down from a roof (urban combat simulation) where the mass of the bolt and bolt carrier have to overcome gravity induced moment of inertia as well as spring rate opposed to light loads

 

Never considered that one before cleefurd. Good to know... and log into one of the few functioning brain cells I have remaining. :p

 

C

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