Maverick Project & Initial Thoughts

Here's my FX Maverick Compact .30 as it sits currently..

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I'm running a 502mm TJ barrel (1:26" twist), chambered for smaller slugs and diabolo pellets. I was going to cut o-ring grooves to keep it a solid one-piece design, but I decided to cut the M12 x 1mm pitch with my lathe to run the brass Huma high-flow TP. Zero harmonic issues, CrMoly steel barrel is very stiff, so I don't see needing a shrouded protector for this length. Running a custom LDC that Neil Clague made for me (I highly recommend him for custom work!).

I also made a bottle cover from a repurposed neoprene fire extinguisher holder (with nylon reinforced Velcro straps). It works very well, the bottle gets ice cold this time of year, so it makes it less painful to handle (and puts my mind at ease in the field knowing that it has some form of protection). 

Anyways, my initial feedback and feelings for this Maverick.. first, I got off to a bumpy start with this thing. There was ridiculous latency getting my order shipped, then I found the hard way that there were interference issues due to tolerance problems with the bipod rail + CF bottle (and defaced my bottle the first time that I went to remove it). Now, if I didn't like this rifle - I would be seriously pissed, but so far this thing has impressed me enough to merit my personal time!

So let me begin with what I like...

1Size & weight - very manageable for me as a hunter. I have no interest in long, bulky, heavy guns. They don't appeal to me at all. I hunt in steep, slippery, unforgiving terrain, and carrying around a long cinder block in the mountains is not an enjoyable experience. The Maverick Compact is all good in this regard.

2. Adjustability - having adjustable external regulator(s) lends itself to being able to use different types of ammo efficiently. With my Taipans and EVOL, my tuning strategy is simple, but I sacrifice shots. I crank up the reg up as high as I need to for the heaviest projectile that I'm going to shoot with the rifle, and I manage the hammer energy for lighter. Accuracy isn't affected by this, but I definitely lose access to some shots after falling off the reg. External adjustment naturally solves that issue.

3. Shot count - it's pretty good. Having a decent "high-power" shot count is an important requirement for me, thus the platform should be efficient. 

4. Accuracy - stellar with pellets (abysmal with slugs, but I'll get to that). The FX Superior Std 500mm in my rifle prefers 44.75gr JSBs. I bonded a carbon fiber sleeve to the liner, modified the pellet probe to unblock the airflow, and I'm running a Huma high flow transfer port on the barrel. This gives me 905fps at 150bar, but I run the 44gr closer to 890fps at just under 145bar for maximizing shot count. With this tune, it shoots sub-MOA @100y all day long!

5. Ergonomics - comfortable to shoot out of the box. The Impact was one of the most uncomfortable rifles that I have ever shot. To remedy that, I had to add almost 2lbs of aftermarket aluminum, and that kept the Impact in benchrest mode, and I'm not a benchrest shooter.

Dislikes

1. Tolerances are off - the rail / bottle thing is a problem that FX will need to resolve (they're already on top of this)

2. Magazines - I machined two TJ barrels for my rifle, the one that I had the most hope for was the short one. My plan was to chamber that barrel to run 47.5gr NSAs, and in terms of chamber reaming - I nailed it. Sadly, this ammo gets rotated sideways in the FX magazines - and this greatly disappoints me. The smallest Nielsen slug that I have found that does not rotate are the 49.5gr. They shoot decent when I crank up my regulator, but unfortunately that reduces my shot count to a mag and small change. I'm helping / sponsoring Orion Iguana Hunter to fix this for those of us shooting larger projectiles).

3. Accuracy (slugs) - as stated before, it's abysmal. 2.5-3" groups at 100. The new FX Hybrids DO fit in these newer "Wildcat/Maverick/Dreamline" mags without interference, but these FX Hybrid slugs shot not better than 2.5-3" at 100 with my rifle. Very disappointed in this, but I'm sure the faster twist liners will resolve the problem

4. Barrel attachment - single grub screw. Technically feasible, but it's a "min-bar" solution IMO. At least the screw is an M4 (or M5?) and not some tiny M2-M3.

5. Exposed linkage - I don't care for it, but the rods are made from a pretty beefy steel material, so this may not be a huge deal.

I have some other minor gripes and praises, but I'll leave it at that. With all of that said, I do like this Maverick (a lot). I wish the mag capacity was higher, but 13 shots isn't terrible. It's not as stout not as powerful as my EVOL, but I like it nonetheless.

My feedback to FX would be to:

  • Address the issues with the tolerances (I'm told this is already in the works)
  • Figure out a re-design for the magazine insert so your rifles support more projectiles in .30 (and .25)
  • Keep up the innovation!!! 

I can answer any questions about this rifle, please ask in this thread. 
 
I'm betting the "tolerances" aren't that bad with the bottle to lower rail interference problem.

I'm betting that the rotation of the first regulator is what's causing the interference problem. Just a VERY small degree of either extra or even not enough rotation will cause our interference problem.

With this thought, FX could have opened up the dimension of the cutout in the lower rail for more / extra bottle clearance. It is pretty a tight fit, causing the need for pretty exacting rotational location of the first regulator.

Mike
 
I’m guessing that the diameter of the TJ is a nice tight fit in the barrel channels below the scope rail. If it were my gun, and those barrel supports were already nice and snug, I would use a piece of CF tubing to tension the barrel. I would slide it over the barrel, butt it up against the action and use that jumbo silencer to tension it. Then go and retest the slugs. I would start at just snug with the silencer then test, snug it a little more, test until it was snug enough to finally give up. You are slinging heavy lead. That barrel might need more help than 4 orings and a grub screw.
 
Ghost, can you explain your rationale for immediately going to a TJ barrel vice the FX STX system? In one of your previous posts on another gun you mentioned that the Superior Heavy had out performed the TJ because you never got “fliers” with the Sup Heavy. I think it was the Veteran? Anyway, just curious... Thanks. 
 
That's odd you couldn't achieve MOA at 100 yards with the Maverick. Was it windy??? Can you achieve MOA with other compact rifles at 100 yards? 



Are you using the Superior liner with the TJ? If not then the hybrid testing would be extremely skewed. You wouldnt be able to actually say if you can or cannot achieve MOA at 100 yards with the Maverick set up. 
 
@mtnghost thanks for the review / thoughts but I am kind of shocked at the slug groups. With as much as FX markets as a slug guns, I would automatically expect better groups at a 100 yards.


Again, pellets are sub-MOA at 100 with the factory setup. The short Superior standard liner just doesn't play nice with slugs.

Did FXUSA offer to replace the scratched bottle when you called them concerned about its compromised safety?


FX-USA did reach out to me through the forums asking me to call in. I couldn't get through when I tried, so I emailed the service center (I value my time).

I’m guessing that the diameter of the TJ is a nice tight fit in the barrel channels below the scope rail. If it were my gun, and those barrel supports were already nice and snug, I would use a piece of CF tubing to tension the barrel. I would slide it over the barrel, butt it up against the action and use that jumbo silencer to tension it. Then go and retest the slugs. I would start at just snug with the silencer then test, snug it a little more, test until it was snug enough to finally give up. You are slinging heavy lead. That barrel might need more help than 4 orings and a grub screw.

My TJ's OD is a perfect 14mm fit. I also made a tensioned shroud system for it, but it's not required for a barrel of this length shooting with 150bar (already tested with and without, accuracy is the same). When I test a longer TJ, I will absolutely need to use the tensioned shroud to keep it rock steady and control harmonics.

Have you tried the slugs in the TJ barrel? Have tried the slugs in the FX barrels at slower speed? 


im tempted to put my .22 TJ barrel on the compact.

Yes I have. The 43.8, 47.2, 49.5, 65.5gr NSAs are sub-MOA @100, but anything larger than 47.2gr requires higher reg pressure to get them shooting at velocities that I want out of this rifle in the Compact form factor.

Ghost, can you explain your rationale for immediately going to a TJ barrel vice the FX STX system? In one of your previous posts on another gun you mentioned that the Superior Heavy had out performed the TJ because you never got “fliers” with the Sup Heavy. I think it was the Veteran? Anyway, just curious... Thanks.

I would have definitely ran an FX Superior Heavy liner if they were available for sale lol, no one has them! I don't get flyers with TJ .30 barrels with slugs, but pellets are another story. As I'm sure you're aware, the bores are extremely tight - if the slightest abnormality exists with the pellet heads (or when they're chambered incorrectly) = flyers.

That's odd you couldn't achieve MOA at 100 yards with the Maverick. Was it windy??? Can you achieve MOA with other compact rifles at 100 yards? 



Are you using the Superior liner with the TJ? If not then the hybrid testing would be extremely skewed. You wouldnt be able to actually say if you can or cannot achieve MOA at 100 yards with the Maverick set up.

How exactly would one run a TJ with a Superior liner?! Again, the Superior standard liner is sub-MOA accurate with pellets - but not any of the slugs that I tested (and I tested every .30 NSA, FX Hybrids, and hand loaded 62gr Varmint Knockers). Carbon fiber sleeving and bore polishing was done with the FX liner, and the before and after results were virtually identical - telling me the liner geometry and specifications are not compatible.




 
Ghost, IK had the same issue with my Superior Heavy liner. Before giving up completely, I removed the choke. Regardless of what Matt D. says, No, a slug does not Require a choke! 

those of us who have been shooting slugs for quite a few years now have done a tremendous amount of testing. A proper bbl. and NO choke always comes out on top. 



With a choke, mine was shooting very poor groups with any slug I tried. I removed it and bingo, Instant accuracy. 



Here is before and after the removal. Only 80 yards as that is all I have available on my private range. Bottom hole is from another gun that scatters. I shot to settle the reg. and 10 on target.

KnifeMaker 

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When I built a TJ for my Priest, I wasn’t impressed with its accuracy. The more I figured out ways to lock the barrel down solid, the better it shot. It’s only a .25 but I was driving 34gr slugs hard. Was that TJ accurate on another gun?

Well I've machined probably ~14-15 .300 (1:26) TJs, and every one of them has exceeded my expectations. I've adopted a specific technique for throat reaming the chambers of my barrels that makes all of the difference.
 
Not meaning to get into who has machined the most barrels contest with you. Just wanted to let you know my findings. Having your chamber seating depth and angle of cut are definitely priority but if you don’t think a short stout barrel can’t experience harmonics issues when supported by rubber, well good luck.

I never said that was impossible - rather that MY short stout barrel doesn't have those problems. I don't like where this dialog is going, so let's drop it.