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Rifle Chassis Survey

looking forward to it, i have a badass shooting 223rem R700 BA that is a perfect fit.
 
I’m excited to see something new. I’m more of a field shooter. I would like to see some good thought applied to both grip surfaces. How will it carry? How will it hold shooting prone, offhand, off a bipod.

It needs a wrap around barrel shroud around 16” from lug to tip. That should have 360 deg mlok for bipod, tripod and handguard grips. The rear grip requires some real effort to make it handy, but align your finger perfectly to the trigger. The butt should be adjustable for lop and cheekpiece height. The butt should ride bags well and fairly flat.

it needs built in arca, barricade stop, cheek pad and sorbethane butt pad. A good addition would be some kind of handy tool for adjustments so they don’t come loose and it is mounted on the stock when not in use. A level would be nice.

Of course weight must be considered....4lb max....it would be ok to add weight in key points for balance.
 
So, did the prototype ever come together? Even if it didn't pencil out to being profitable, do you have any pics or parts of the experience you could share?
 
A buddy that builds/sells aluminum chassis said his cost for aluminum blanks went up a minimum of $200 per chassis, more on larger/longer ones.

Gonna be hard to reinvent the wheel and keep costs in line.

Topstrap
 
A buddy that builds/sells aluminum chassis said his cost for aluminum blanks went up a minimum of $200 per chassis, more on larger/longer ones.

Gonna be hard to reinvent the wheel and keep costs in line.

Topstrap
Hmm, from my understanding of chassis, ability to accept different grips, butt stocks and forend attachments makes me wonder, could you make the forend interchangeable? That would then focus smaller blanks to the action interface, trigger, mag feeding which seems to be action type dependent...
 
His are one piece which does take large blanks. Some of the other manufactures do make theirs more modular. Not sure if one is better than the others or not. For my purposes most are heavier than some like but being heavy hides slight variances in shooter input or slight variance in setup. Pretty amazing to see the machine carving out something so beautiful in such a short time.

Topstrap
 
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Dont forget Savage actions! There are a lot of us that love them but have a hard time finding really nice Chassis because no one wants to make them.
 
Dont forget Savage actions! There are a lot of us that love them but have a hard time finding really nice Chassis because no one wants to make them.
ARS (Accurate Rifle Systems) makes a few variations for the different Savage actions. To Adam, the original poster, I'd like to see your new design. I think you'll find so many different disciplines have their own idea of what is "best". Hard to keep everyone happy and still be able to keep machining costs down with a multitude of options.


Topstrap
 

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Dont forget Savage actions! There are a lot of us that love them but have a hard time finding really nice Chassis because no one wants to make them.
Mcreesprecision.com makes chassis for several Savage models.

I have one for a target single shot. It’s the only chassis I’m familiar with. It’s well made, kinda plain for adjustability.

41A90BC2-2FB8-4F90-8F01-25A40DB0CB9C.jpeg
 
I did end up having a proof of concept manufactured. The design idea is to have a scope mount integral to a barrel block clamp. Some research shows that the scope moves in relation to the barrel shot to shot. This can cause degraded accuracy and fliers. There is possible movement between the barrel and the action, the action and the rail, and the rail and the rings. This chassis bypasses all of those. The POC is not pretty, but proves out the design. I had a shop build a barrel block top, and an insert that was epoxied into a rough cut wood stock. The testing I did shows that the average 5 shot group is reduced a small amount (from .55” to .5” in the rifle I tested), but had a noticeable reduction in the combined 20 shot group, going from .925” to .7”. Further testing is needed to confirm these figures are repeatable and statistically significant, but the design appears to actually improve accuracy.

Unfortunately the cost of R&D and manufacturing prototypes ended up being significantly higher than planned, so this project is on hold for the time being.

Here it is a rendering of the chassis for a long action with cip magazine:

block-rifle-v9-black-no-weights.png

And here it is in red with attached m-lok weights:

block-rifle-v9.png

And here is the proof of concept glued into a wood stock. It is ugly, but it works:

2021-02-24 14.18.22.jpg
2021-02-24 14.18.46.jpg
 
ARS (Accurate Rifle Systems) makes a few variations for the different Savage actions. To Adam, the original poster, I'd like to see your new design. I think you'll find so many different disciplines have their own idea of what is "best". Hard to keep everyone happy and still be able to keep machining costs down with a multitude of options.


Topstrap
Thanks Topstrap,
These guys and gals are right in my own backyard and didnt even know it!
 
I did end up having a proof of concept manufactured. The design idea is to have a scope mount integral to a barrel block clamp. Some research shows that the scope moves in relation to the barrel shot to shot. This can cause degraded accuracy and fliers. There is possible movement between the barrel and the action, the action and the rail, and the rail and the rings. This chassis bypasses all of those. The POC is not pretty, but proves out the design. I had a shop build a barrel block top, and an insert that was epoxied into a rough cut wood stock. The testing I did shows that the average 5 shot group is reduced a small amount (from .55” to .5” in the rifle I tested), but had a noticeable reduction in the combined 20 shot group, going from .925” to .7”. Further testing is needed to confirm these figures are repeatable and statistically significant, but the design appears to actually improve accuracy.

Unfortunately the cost of R&D and manufacturing prototypes ended up being significantly higher than planned, so this project is on hold for the time being.

Here it is a rendering of the chassis for a long action with cip magazine:

View attachment 1314747

And here it is in red with attached m-lok weights:

View attachment 1314746

And here is the proof of concept glued into a wood stock. It is ugly, but it works:

View attachment 1314748
View attachment 1314749
The need to mount the scope to the barrel for improved accuracy is news to me, can you provide sources of that info? I ask because I'm surprised I have never seen the BR accuracy community bring this up as a topic, and I would suspect a standard action mounted scope rail would save substantially on the cost.
 
The need to mount the scope to the barrel for improved accuracy is news to me, can you provide sources of that info? I ask because I'm surprised I have never seen the BR accuracy community bring this up as a topic, and I would suspect a standard action mounted scope rail would save substantially on the cost.
The primary source is the book "Rifle Accuracy Facts" by Harold Vaughn.
 
If I can make a suggestion if you are catering toward the prs crowd. Have a place for a grayops plate then have the BA as low to the CG of the stock as possible
 
If I can make a suggestion if you are catering toward the prs crowd. Have a place for a grayops plate then have the BA as low to the CG of the stock as possible
The forend has a full length arca rail for the PRS shooters, which would accommodate the grayops plate. I also kept the barrel close to the forend, I think it was 1.25" from the bore centerline to the bottom of the forend.
 
So add a wedge cut in the scopebase to level a scope.

And a quick adjust bag rider
 

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