Any Mossberg MVP Shooters out there!

[Californio]

Ok so we have a MDS LSS MVP .308 that works great with standard M14 magazines.

Now what about the 5.56 version with the duckbill bolt.

MDS LSS 5.56 owners, can you empty a 30 round AR magazine without Failures to Feed, Fire or Eject?

Your experiences needed.

[spamsucker]

I moved one of my US Optics scopes onto my MVP since I needed the SWFA 16x42 that was on it for my competition rifle. That scope is officially worth more than the rest of the weapon system. Sigh. I'll be using it at the end of the month for a tactical rifle competition. We'll see how the setup does. It's nice and light at least.

The 5.56 is 16.25" barrel and I believe 1:7 twist (7.62 gets the 18.5" and 1:10 I believe). So ideally, if this is true, what would be best round grain for that 5.56, 16.25" barrel in 1:7 twist for best accuracy over longest reasonable shot of say 1000ish yards?

55-77grain.

Any left handed rumors?

yeah, it's rumored that mossberg hates lefties and wishes they'd all vanish.

With a 5.56 out of a 16.25" barrel, you're not going to see 1000 yards.

I get that far because I have a 24" barrel. Drop the length and you lose velocity. Drop to 16" and you lose quite a lot.

My goal on the bullet question is to get say 2-3 recommendations, buy say 50 rounds of each and try each and see what I think. But I need some starting points as I am clueless on a setup like this so the input helps, thank!

ps - this is a weapon I would take down and sight in at South Bay Rod & Gun Club.

If you're not handloading then you'll be limited to whatever you can find on the shelf and honestly it's not going to matter. Retail ammo in .223 mvp's has been turning in 1.5" or smaller groups on average. Don't shoot junk ammo and you'll find that anything you put in it will shoot acceptably.

Ok, owners of the MDT LSS MVP 5.56 chassis, any problems with magazines, I see a 30 round magazine, can you cycle-fire-cycle 28 times, without failure to feed, fire or eject issues?

Interested in your experience with this setup.

All the time I can go the full 30 as long as I use bullets meant to feed from a mag. With my 70gn bergers and 75gn hornady's it's a very reliable FTF inducement. Using 55gn FMJ's it feeds perfectly. The feed ramp is not apparently meant for VLD's.

Ok so we have a MDS LSS MVP .308 that works great with standard M14 magazines.

Now what about the 5.56 version with the duckbill bolt.

The duckbill bolt was specifically meant to feed .223 from a mag. That's why it exists. It's good at it. Actually if you try to single feed by resting a round on top of the empty mag follower the rifle will almost always fail to feed. The chamber and the top of the mag aren't on the same plane. To single feed I find it easier to back a round about halfway into the mag then run the bolt forward. It seems to be reliable that way. Single feeding is otherwise a bit of a PITA on this gun.

[bombadillo]

Glock This, You should try giving Hornady Vmax a shot before you try anything else. Factory Freedom Munitions 55 and 60gr Vmax rounds have given me pretty easy 1/2-3/4" 3-shot groups. I get about 1" 5 shot groups with the same said ammo.

[Californio]

Thank you, I have been looking at the platform, MDS LSS 5.56 Chassis and a custom chambered barrel, for 75 gr. and above seated at magazine depth. I wanted to try the Black Hills 77 gr. TMK, guess its not happening without some smithing, or not at all.

Thanks for the feedback.

All the time I can go the full 30 as long as I use bullets meant to feed from a mag. With my 70gn bergers and 75gn hornady's it's a very reliable FTF inducement. Using 55gn FMJ's it feeds perfectly. The feed ramp is not apparently meant for VLD's.


The duckbill bolt was specifically meant to feed .223 from a mag. That's why it exists. It's good at it. Actually if you try to single feed by resting a round on top of the empty mag follower the rifle will almost always fail to feed. The chamber and the top of the mag aren't on the same plane. To single feed I find it easier to back a round about halfway into the mag then run the bolt forward. It seems to be reliable that way. Single feeding is otherwise a bit of a PITA on this gun.

[bombadillo]

If you want to rebarrel it completely, let Tony Rumore at Tromix know and he can custom make you pretty much whatever barrel you'd like to do.

[glock_this]

That scope is officially worth more than the rest of the weapon system. Sigh.

I am about to buy a scope that would put me in the same boat. But, I see it as a good scope is 1 of the key ways (ones ability and rounds) to make the rifle and rounds do what they are suppose to do. So, it seems like a worth while - but pricey - payout.

55-77grain.

That's a hefty range.

I get that far because I have a 24" barrel. Drop the length and you lose velocity. Drop to 16" and you lose quite a lot.

Yes understood of course. But 16" is what they offer off the shelf unless I do a custom build (which is being considered).

If you're not handloading then you'll be limited to whatever you can find on the shelf and honestly it's not going to matter. Retail ammo in .223 mvp's has been turning in 1.5" or smaller groups on average. Don't shoot junk ammo and you'll find that anything you put in it will shoot acceptably.

Not interested in loading. Interested in as much accuracy in store bought off the shelf round I can get (and always get). I would be curious, if the goal is long range accuracy, what you consider "junk" rounds? And also, I am not really looking for it to "shoot acceptably" per se, I have 1 specific goal for this rifle. I have other rifles that "shoot acceptably". So are you saying don't buy the common - what I consider junk - steel case Wolf or Tula? As I wouldn't anyway.

The duckbill bolt was specifically meant to feed .223 from a mag. That's why it exists. It's good at it. Actually if you try to single feed by resting a round on top of the empty mag follower the rifle will almost always fail to feed. The chamber and the top of the mag aren't on the same plane. To single feed I find it easier to back a round about halfway into the mag then run the bolt forward. It seems to be reliable that way. Single feeding is otherwise a bit of a PITA on this gun.

Interesting info. I had been wondering about best way to single feed.

"if you try to single feed by resting a round on top of the empty mag follower the rifle will almost always fail to feed." - is this due to the mag/follower/lips and dimensions of the mag in some way? If so, could you just use a zero round sled - Bob Sled? Like some retail use in AR pistols to SSE them as they are just essentially nice aluminum blocks with no lips and no follower and a smooth top surface. Also, I just found a "Single Shot Magazine Follower" that you replace the follower on a good steel/aluminum mag (no polymer pmags) that claims to be for this very feed issue = turn a steel/aluminum mag into a single shot smooth feeding sled.

Glock This, You should try giving Hornady Vmax a shot before you try anything else. Factory Freedom Munitions 55 and 60gr Vmax rounds have given me pretty easy 1/2-3/4" 3-shot groups. I get about 1" 5 shot groups with the same said ammo.

Perfect, I will do just this. I intend to get 3 maybe 4 rounds and try all 1 at a time to try to find the most ideal single round at the end of the day that I know I can store buy repeatedly and count on having access to.

[bombadillo]

Here are a few pics of most average days shooting. If it doesn't shoot straight, I typically know that the rifle is not the issue, it is me.





I kind of strung this one vertically:







I generally try to shoot 5 shot groups, and our range is a pain to get out to 200 yards. Shooting 100 yards is pretty typical at our range, so most of my groups will be 100yd or so. This is a 3 shot group from one day out there. One of the better MVP groups.

[MauserMike]

how do you guys operate the tang type safety on a pistol grip? i was going to get the flex but that is a huge NONO in the gun world to me, no easy access of the safety makes the flex a non option. I guess the Flex with a shotgun monte carlo stock attachment or something is available?

[bombadillo]

To be honest, I so rarely use the safety that I couldn't tell you off hand. When I do, it is either from a bench, or from a rest that is easy enough to not have to be concerned about fast operation shooting coyote and pests.

[Californio]

So am I correct that the current MVP 5.56 does not consistently feed magazine length cartridges in the 75-77 grain range?

Has any gunsmith been able to fix this issue?

I see the new MVP 5.56 LC will have a 1x7 twist barrel which tells me they plan on 75-77 grain cartridges, anyone know if the feed ramp has been improved?

[bombadillo]

I would kill for a 1:8.

I may have Tony Rumore of Tromix make me a 1" full bull stainless 1:8 in a .223 Wylde chamber. I think that is the best of all worlds.

[FMJBT]

So am I correct that the current MVP 5.56 does not consistently feed magazine length cartridges in the 75-77 grain range?

Has any gunsmith been able to fix this issue?

I see the new MVP 5.56 LC will have a 1x7 twist barrel which tells me they plan on 75-77 grain cartridges, anyone know if the feed ramp has been improved?

I don't have any experience with the MVP rifles, but I fail to see why mag length loadings in 75 and 77 grain wouldn't work in this rifle. The external shape of the bullet is virtually identical to lighter 55 and 62 grain loadings, the 75/77 bullets just take up more room inside the case when loaded to mag length.

[Californio]

If you read internet forums etc. this is what I understand.

The reason I am asking the questions, is to get an honest answer from those who have gone with the MDS LSS MVP 5.56 chassis which will be factory available from Mossberg as an MVP LC 5.56 in 1x7 twist.

I run Black Hill 77 gr. TMK in Gas and would like to run it in Bolt.

We have a cartridge at 2.20 c.o.l and one at 2.25 c.o.l., something about the ramp angle and the front end of the magazine sitting a tad low unless epoxy is used in the front to build it up.

I don't have any experience with the MVP rifles, but I fail to see why mag length loadings in 75 and 77 grain wouldn't work in this rifle. The external shape of the bullet is virtually identical to lighter 55 and 62 grain loadings, the 75/77 bullets just take up more room inside the case when loaded to mag length.

[glock_this]

FWIW I decided to call Mossy today to check on MVP LC availability/release, they said, "middle of this year". Ugh, not what I was hoping to hear.

EDIT: I now read elsewhere "April" on social media.

[bombadillo]

FWIW I decided to call Mossy today to check on MVP LC availability/release, they said, "middle of this year". Ugh, not what I was hoping to hear.

Ouch! My offer is still on the table to help you build one up, and as I said, I think we could do it for something around the 900-1k mark or so.

20" Threaded Med Bull Barrel MVP Predator
$550

Chassis
$399

EGW 0 or 20moa HD Base
$39.99

CTR Buttstock Assembly
$89

$1078 Total, but as I told you I can help you find some deals to get it around the 950 ballpark.