NRL Open Heavy Rifle Question

Jdiver25

FNG
Joined
Oct 11, 2025
Messages
3
Hello,

I’m interested in building a rifle for NRL Open Heavy. I’ve scoured all the forums and have found some good starting points. Here’s the criteria I’m considering if anyone is willing to chime in with recommendations on specific brands/items from their experience/lessons learned or even builds that you’ve had success with, that’d be awesome. Rifle will be chambered in 6.5cm.

-Chassis with foldable stock

-CF vs. Spiral Fluted Barrel (24in proof weighs 3lbs, not sure what a 24in spiral fluted barrel runs)

-Recommended Action for a Proof or other pre-fit barrel?

-Considering Leupold Mk5 5-25 for weight and I can get one for a decent price. Other recommendations for similar price?

-Suppressor vs. Break (I have a KGM R30, not sure how I’d be sitting on weight for the build)

-send it level vs. bubble level (if bubble level which do you recommend?)

Anyone shoot open heavy with a Seekins HIT platform? I thought about getting the new HIT M3 and swapping to a CF barrel but seems like it could still be tight on weight. Any experience there? Also, looks like Proof isn’t currently selling pre-fits for Seekins?

Thanks all.
 
Have you shot a match before? My suggestion is to shoot skills and make sure it’s your thing before building a rifle that is purpose built.


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Have you shot a match before? My suggestion is to shoot skills and make sure it’s your thing before building a rifle that is purpose built.


Sent from my iPhone using Tapatalki haven’t s
Have you shot a match before? My suggestion is to shoot skills and make sure it’s your thing before building a rifle that is purpose built.


Sent from my iPhone using Tapatalk
I hunt regularly and shoot AR’s and pistols a good bit, although not in competition. I have all of the support equipment (tripod, bipod, kestrel, chrono, bags etc…) just trying to do a little more research before I pull the trigger on anything. Quite a few options out there, don’t want to make an uninformed decision.
 
Nrl hunter, why does it have to be a folding chassis, packing?

Running heavy class, I'd put the most the weight in the barrel.

Mk5 is a decent scope. They can/do lose zero if you hit something with the scope. It's a leupold.

24in barrel, 65cm, 2750 is minimum velocity with a 140gr bullet to make power factor, 24in will do that pretty easily. Heavier the bullet less speed you need.

Brakes will add points in allowing you to spot your impacts/misses much more proficiently. But a supressor will teach you recoil management better. I'd go best of both worlds, braked can.

Pick your chassis, glass, get a lightweight action(defiance classic at 23oz and aw mag cut for a grand is a solid choice). Once you have everything compiled in a weight total, you can then pick the barrel to get you near the 16# limit, leave a few oz on the table, like 3-4 just in case of scale variance.
 
I’ve personally witnessed a couple mk5s and ZCO go down this year in PRS matches. I would steer clear of a mk5 personally. You’ll have no issues getting power factor with a 24”. The 144 and 153.5 will be pretty easy to spot impact wise assuming you run a brake. They make a big splash.
 
Nrl hunter, why does it have to be a folding chassis, packing?

Running heavy class, I'd put the most the weight in the barrel.

Mk5 is a decent scope. They can/do lose zero if you hit something with the scope. It's a leupold.

24in barrel, 65cm, 2750 is minimum velocity with a 140gr bullet to make power factor, 24in will do that pretty easily. Heavier the bullet less speed you need.

Brakes will add points in allowing you to spot your impacts/misses much more proficiently. But a supressor will teach you recoil management better. I'd go best of both worlds, braked can.

Pick your chassis, glass, get a lightweight action(defiance classic at 23oz and aw mag cut for a grand is a solid choice). Once you have everything compiled in a weight total, you can then pick the barrel to get you near the 16# limit, leave a few oz on the table, like 3-4 just in case of scale variance.
Thanks for the reply.

I wanted a folding stock so it’d fit in some gun cases I have and to be able to toss it in a backpack.

I was considering a lighter barrel to use a heavier chassis, but can see the advantage there as well. I have a super light backpack rifle and wanted to try a chassis.

I’ve been seeing issues with Mk5 drop test. I was considering them primarily for cost/based on recommendations for weight savings. I can get a decent deal on Night Force as well. Any other recommendations?

Braked can would be sweet for sure.
 
Nightforce is gonna chew up a pile of weight, it'll be 40oz wirh mount unless you get the 4-16 atacr, and personally I feel you need to have a hove with 20x or more on top end. Not because you have to use it, but because scope optical properties are never their best at max magnification.

Vortex has a new gen3 razor 4-24 coming out very soon that'll land around 30oz, that's where I'd go. I have 4x gen3 razors, 5 counting my 1-10 on the gasser they have never lost zero, they're a good scope with great glass.

Folders you have two choices, XLR element or MDT Hnt26. I think the hnt26 is a better chassis for hunting, but it needs a bag rider desperately. Xlr? I don't want to be gripping a chunk of metal when it's 20° outside. This is coming from a guy who has 4x xlr chassis, a element MG and 3x envy pro prs guns. I own a Hnt26 too.

I'd get the new manners pro pack folder of you have to use a folder, but install the full length arca.

I'm not a carbon guy I think your paying way too much for gimmick, so I say get a 24" light palma minimum for contour that'll land around 3.6#.
 
I went with an MDT premier genII with a tikka action and 24” marksman contour with SRS brake. I’ve got an NX8, SG pulse level, and triple pull.

I am right at 16# and if scales are heavy I’ll have to pull a couple accessories off.

16# is no joke but I purpose built it for NRL after shooting my 6CM in skills last year.

The premier has a folding option but I didn’t see a benefit for the weight penalty. Doubtful I’ll take that gun or chassis in the field anytime soon. KRG has some nice chassis options as well. You could go the route of adding weights to bump up to leave you flexibility to hunt with it minus weights.


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