Terminus Zeus

[sigstroker]

Review of the Terminus Zeus.

[DDRH]

I've got one. Running 6GT with hand tight (with set screw) bbl from Straight Jacket Armory.
Has feeding issues with the 6GT. Using Magpul AICS mags helped (gotta push the bolt into battery fast, slow can still jam).
Binds if rear of the mag is pushed up. Unless you use AW mags. AW mags with 6.5CM length cartridges should feed good.
Or have it tuned with your Stock/Chassis/Magazine.

60* bolt throw is nice. bolt lift is smooth, but still heavier than a 2lug (compared to BigHorn/Zermatt actions)

Overall i like the action but it is pricey.

They also offer the Zeus with full action threads for torquing on the bbl only.
With the set-screw version, you can get a pre-fit bbl with "hand tight and set screws" or Order it as torqued (although with less threads than the Full thread version).

[sigstroker]

Wow, supposedly the 6GT solves all feeding problems. Guess not.

Do you have to take it out of the chassis/stock to change barrels?

[longrange1]

if your having feeding issues you need to tune your mags or have it done for you if you dont know how.

i switched from a MPA chassis this year to a manners PRS1 W/mini chassis...the mags ride up higher in the PRS1...i had to file the mag lips down and then readjust them...zero feed issues with a 6BRA.

my buddy is shooting a zeus in an MPA chambered in 6BRA and zero feed issues with a little mag tuning.

[sigstroker]

Also, they didn't make it clear in the video, but my understanding is there are two versions of the Zeus. The early version has the larger bolt. The video discussed the smaller bolt in the current version that is supposed to have more room for the magazine and feed better.

[longrange1]

Also, they didn't make it clear in the video, but my understanding is there are two versions of the Zeus. The early version has the larger bolt. The video discussed the smaller bolt in the current version that is supposed to have more room for the magazine and feed better.

this is correct but again its more about mag tuning...as i said i run an axiom with the .750 bolt its been a 6 creed..6BR..6BRX..and now a 6BRA with zero feed issues with a little mag tuning...i ran the MPA+ 4 mag extensions as well with no issues.

[sigstroker]

Sounds like the Magpuls wouldn't be conducive to tuning then. Ironic because MPA supplies a Magpul with their complete rifles.

[DDRH]

Also, they didn't make it clear in the video, but my understanding is there are two versions of the Zeus. The early version has the larger bolt. The video discussed the smaller bolt in the current version that is supposed to have more room for the magazine and feed better.

The "early version" would be the Curtis Vector, with the larger diameter bolt.

The current Terminus Zeus comes in two flavors. 1. With set screws. 2. With full threads (torqued bbl only)

Wow, supposedly the 6GT solves all feeding problems. Guess not.

Do you have to take it out of the chassis/stock to change barrels?

I wouldn't blame the 6GT for not feeding...there's always gonna be a combo that will not work well with so many aftermarket parts.

this is correct but again its more about mag tuning...as i said i run an axiom with the .750 bolt its been a 6 creed..6BR..6BRX..and now a 6BRA with zero feed issues with a little mag tuning...i ran the MPA+ 4 mag extensions as well with no issues.

Agreed. I'm sure it's a combination of tolerance stacking. I have mine in a KRG W3 Chassis. I think folks using the MPA are able to run it smoothly. So far it seems to work well with the Magpuls. If I go into battery slowly, the front of the feed lips will sometimes catch the rim and point the cartridge out of alignment with the chamber. Perhaps some sanding down/loosen this area will help

As for mag binding, the one thing that may help with mag binding, would be something like the Xylo Chassis from ARC. The Mag catch protrudes out, under the catch to stop the magazine from tilting up rearward.

[ar15barrels]

I've got one.
Has feeding issues with the 6GT.

I'm guessing the barrel has a flat breech like a salvage, howa or tikka.
The counterbore on a 700 design really helps compared to a flat breech because the counterbore acts a like a funnel.

[ar15barrels]

Sounds like the Magpuls wouldn't be conducive to tuning then.

haha.
No bending of plastic lips...

Metal mags are MUCH easier to tune.

[DDRH]

I'm guessing the barrel has a flat breech like a salvage, howa or tikka.
The counterbore on a 700 design really helps compared to a flat breech because the counterbore acts a like a funnel.

Yes, flat breech face

[longrange1]

The "early version" would be the Curtis Vector, with the larger diameter bolt.

The current Terminus Zeus comes in two flavors. 1. With set screws. 2. With full threads (torqued bbl only)




I wouldn't blame the 6GT for not feeding...there's always gonna be a combo that will not work well with so many aftermarket parts.



Agreed. I'm sure it's a combination of tolerance stacking. I have mine in a KRG W3 Chassis. I think folks using the MPA are able to run it smoothly. So far it seems to work well with the Magpuls. If I go into battery slowly, the front of the feed lips will sometimes catch the rim and point the cartridge out of alignment with the chamber. Perhaps some sanding down/loosen this area will help

As for mag binding, the one thing that may help with mag binding, would be something like the Xylo Chassis from ARC. The Mag catch protrudes out, under the catch to stop the magazine from tilting up rearward.

like i said i switched from an MPA chassis to the manners PRS1 this year...the mags ride up higher in the mini chassis of the PRS.

so in the MPA(22lb rifle)i could rest the rifle ON the mag and run the bolt with no issues...when i put the action/barrel in the PRS with any kind of upward force on the mag the bolt hit the back of lips and would stop...with the same mags that ran flawlessly in the MPA.

with some filing and lip tuning the PRS now runs flawlessly with the rifle resting on the mag...mags are not hard to tune you just need to do it in VERY small steps...a tiny tweak makes a big difference.

as far as plastic mags go....i would not run one i dont care how well they work id never be 100% confident.

[longrange1]

Sounds like the Magpuls wouldn't be conducive to tuning then. Ironic because MPA supplies a Magpul with their complete rifles.

most likely because they can get 3-4 plastic magpuls for the price of 1 metal mag.

[longrange1]

A mag lip tool is pretty simple to make...a piece of mild steel and a hacksaw.

[sigstroker]

most likely because they can get 3-4 plastic magpuls for the price of 1 metal mag.

I misunderstood anyway - I thought you had to tune mags for the MPA chassis.