CMP Rimfire Sporter Build

[navybowhunter]

Well,

I opted to build a "Gucci" rifle for CMP Rimfire Sporter.  I've alluded to this in another post (trigger weights) but here is where I am at so far.

YES a stock 10/22 carbine will work.  NO NEED to build a Gucci rifle....but it is what I have done.

I had a heavy match grade Volquartsen Barrel, and a Boyds thumbhole laminate stock.  Rifle would not make the 7.5 pound requirement for total weight of the rifle, to include sling swivels and an empty magazine.  I was well over 8 lbs.

Also my triggers would not make the 3.0lb requirement.  The interesting thing about the triggers **CAUTION to anyone else that competes in these matches** is that my digital Lyman trigger scale has them coming in at 3.4 lbs.  My NRA official weight set has them breaking at the 3.0 lb mark.  I caution the reader because if your trigger is "Close", if you have not verified it with an NRA weight set, you may be looking at a DQ..., nuff on that.

Went with a  KIDD single stage trigger set to break at 3.25 lbs.

Here is the build list:
Starting from 7.5 lbs

Boyds Thumbhole laminate stock - 2.5 lbs
Kidd single stage trigger - 8 ounces
Scope (Nikon Rimfire Prostaff 3x9): - 13.1 ounces
16.5" Volquartsen THM tension lightweight barrel: - 1 lb 4 ounces
Volquartsen Lightweight Alloy 10/22 receiver: - 10 ounces
Bolt: (stock/but modified for headspace/pinned firing pin, radiused edges for easier removal/install: - 6.4 ounces
Charging handle/Op Rod (Volquartsen aftermarket) - 1.6 ounces
Volquartsen Barrel Mounted scope mount: 1.6 ounces

The above leaves me with .85 pounds remaining for:
Unknown weights:

Sling Swivel
Empty Magazine
Scope Rings

I'm confident I will make the weight requirement now.  Will know for sure this weekend after I pick up receiver from the FFL. 

This is gonna be a TACK driver.  Legal for CMP Sporter in the "T" class or the "TR" class (if match director decides to create that optional class) with the scope taped at 6x or less per CMP games rules under section 8.0.

I'll also likely use it for Precision Rifle Series Tactical Rimfire..., but will need to get me a scope that is Front Focal Plane with MOA or MIL reticle for Unknown Distance Ranging.  PRS Tactical rimfire is an up and coming discipline.  200 yards (ish) UKD shooting with a  rimfire!  Sweet!  Cheaper as well.

R/
Chris

[Cadence]

Looking forward to some pictures 

[maxwell]

I opted to build a "Gucci" rifle

Cue the sound of jaws dropping in shock all across the country. 

[Miki]

Sorry to rain on your Gucci...thumbhole stocks are not permitted in Rimfire Sporter.

[navybowhunter]

Miki,
Correct!  I've been busy with 2 builds and got it confused.

Weight of the MAGPUL X-22 stock is same as the Boyds laminate.

But indeed, thumbhole stocks are not permitted.

The X22 will work.

I just happened to receive one of them yesterday.

I still am naive as to how to post pics.  I'll see if a friend can upload when I get it built tomorrow.

R/
Chris

[navybowhunter]

I'm gonna email CMP for clarification on the thumbhole, as this is not a "Standard" rifle.

CUT/PASTE from rulebook:
8.2.2 General Rifle Configuration, Standard and Tactical Rifles

a) Standard Rimfire Sporter Rifles must be sporter-type rifles of conventional appearance.  Rifles must have a standard sporter-type stocks constructed of wood or synthetic material.  The stock may have a Monte Carlo cheek piece, but may not have an orthopedic or asymmetrically shaped pistol grip.  Adjustable cheek pads are not permitted.  The stock may have a fixed sling swivel on the fore-end.  Thumbhole stocks, stock adjustments of any type (adjustable butt plates, adjustable cheek pieces, etc.) and rails or adjustable sling swivels are not permitted.

b) Tactical Rimfire Rifles may be used in Rimfire Sporter matches, either in a separate Tactical Class or the match sponsor may include them in the T-Class.  Legal Tactical Rimfire rifles must comply with the requirements for overall weight and trigger pull and have a configuration that is similar to common AR and modern military rifles.  Tactical Rimfire rifles may have either aperture or optical sights (no higher than 6X).  If the length of pull on the butt-stock is adjustable, the length adjustment must remain the same for all three positions. 


-----------------------------------------------------------------------------------

One could argue that a thumbhole stock could fall into the "Tactical" rifle category.

Regardless, that X22 stock is a good option, and stock swapping is easily accomplished.

R/
Chris

[navybowhunter]

CMP clarified....Thumbhole stocks are indeed a NO-GO.  SO....Magpul X22 it is.

I'll swap the barreled action to the Boyds Thumbhole stock for PRS Rimfire.

R/
Chris

[navybowhunter]

This is most of the stuff.  Awaiting on the receiver to be delivered to my FFL here in an hour or so.

[navybowhunter]

Task Complete!

Should be one hell of a shooter!  Weighed and it came in at 6.6 lbs on my Lyman trigger scale.  Should be way good, only thing not on rifle when weighing was sling swivel.  Still confused on the rules for that.  More to follow.....

KIDD trigger is freaking PHENOMENAL!  RESET is immediate and crisp!  3.25 lbs!  Holds 3.0 on my NRA Weight set.

Pics!

[navybowhunter]

Que Justin Timberlake "Bringin Sexy Back" as you view these! LOL

[maxwell]

Looks like a nice rifle, for sure. Did you figure out if the Kidd springs would have given a correct weight with the stock Ruger trigger?

This thread caused me to look up the CMP Rimfire Sporter rules, and that sounds like a fun game. Looks like the cost would be lower than highpower, and it would be a good marksmanship followon for Appleseed. It's just as well that the nearest smallbore league is a couple hours away, or I might get sucked in to something else.

[navybowhunter]

Thanks Maxwell,

I never did try the aftermarket KIDD springs.  I have em, at my leisure I will tinker with the spare trigger group I have to see if it will come in.

On that spare rifle Ruger sent me, my next step is to ship the trigger and bolt assembly to Andy Trivette for the "Worx"!  Great pricing, and he has done a few for me in the past.  I'll specify I want the trigger to break at 3.25 lbs as well.  Here is a link to what he does if interested:  *compared to cost of a KIDD or VQ bolt, it is the cheaper way to go*:
http://www.trivettesgunsmithing.com/10.html

CMP Rimfire sporter is geared towards a low pressure/low cost/ minimal equipment required match.  No shooting coats allowed, etc.

The standard class is geared towards a rack grade off the shelf rimfire.   Of course, T class is where my rifle will be classified.  SO....as cheap as say $225, or as pricey as one desires.

It is becoming a very popular match.  Logistically its a very easy match.  Targets are cheaper, don't need a FD range, etc etc.

Maybe I'll see you at a match.  If my leg continues to heal well, I will shoot my first sporter match at CMP Eastern Games in late April.  My only concern now is rapid seated transition, but ...I'm starting to feel up to it.

R/
Chris

[navybowhunter]

My current "Harem" of 10/22's.

I have a trigger group and Boyds thumbhole laminate stock that needs a receiver and barrel.

Maybe build a dedicated PRS Rimfire out of that trigger and stock.

[navybowhunter]

Last years match at Nationals.  You will see many different configurations of rifles here.

https://www.youtube.com/watch?v=0VowLxMimFY

[navybowhunter]

SWEET!  I called CMP because of "MIKI"'s comment above, and was told over the phone Thumbhole stocks were a no-go.

BUT....
I now have an email from the CMP that states they are in FACT allowable!

Sometimes asking for clarification pays off!

Thanks MIKI for bringing it up.

Back to GUCCI!

R/
Chris

[navybowhunter]

I posted my "JOY" about thumbhole stocks, and one match director friend of mine, asked for it in writing.  No Problem, I sent.  May as well cut/paste it in here as well:

What I sent:
CMP,

I have a question regarding Rimfire Sporter rifle requirements.

In the book, Rule 8.0 specifically 8.2.2 (a)
States that for "Standard" rifmire sporter rifles cannot have a thumbhole stock.

What about in the T class?

Thanks,

Chris

What I RECEIVED:

Chris,

The thumbhole stock would be put in the TR class, if you do not have a tactical class you would follow rule 8.2.2 (b) on page 63 of the rules found at http://thecmp.org/wp-content/uploads/CMPGamesRules.pdf?ver=03022017.

Tactical Rimfire Rifles may be used in Rimfire Sporter matches, either in
a separate Tactical Class or the match sponsor may include them in the
T-Class. Legal Tactical Rimfire rifles must comply with the requirements
for overall weight and trigger pull and have a configuration that is similar
to common AR and modern military rifles. Tactical Rimfire rifles may
have either aperture or optical sights (no higher than 6X). If the length of
pull on the butt-stock is adjustable, the length adjustment must remain thesame for all three positions
.


Thanks,

Michelle Woods
Thanks for your continued support of the CMP.
Customer Service/Program Support
mwoods@thecmp.org
419 635-2141 ext.722

[Cadence]

Nice!!
The boot is the sexy part.

How's the leg doing?

[Maximum Ordinate]

Those dogs look vicious. 

[navybowhunter]

Viscious Killers Rusty!  LOL

Don,

The boot ain't sexy at all.  It is similar to walking with a see-saw like sole.  But...it is protecting what is broken in there.  Had a CT scan a week or so ago, and bone is growing on the back side of leg, but front side is slow going.  Gonna wait 3 months (June) and see if evidence of bone growth.  If not, surgery and a bone graft from hip.  Still no way near as long as a recovery as this has been.

Good news?  Doc approved me for shooting, and I can at the ready line, put a normal boot on.  So I am not standing on this see-saw boot!  Butner oughta be interesting!

R/
Chris

[Cadence]

Sorry to hear its taking a long time to heal. The good news is you can get to the line to shoot! Hope you don't have to go the bone graft route - that sounds like a long recovery also.

[navybowhunter]

Final pic of Sporter build.

Lubed it up this morning, and added a Turner Biothane sling.  She ready to rock!

I noticed the sling is LONG for this rifle.

For those that use 1907 type slings, this one is a 54 inch and it is LONG.  My initial prone setting is position 8!  On my AR's I use position 4.

I'll likely trim it up some.

[cwcdl79]

Sure is purdy...

[navybowhunter]

Thanks CWCDL79!

Hope to see you at a match!

R/
Chris

[cwcdl79]

I'll be at Perry for the grand match.

[navybowhunter]

KIDD trigger on the Gucci build is as I ordered....holds 3.0 and breaks at 3.25.

This is a standard RUGER Trigger group I sent to Andy Trivette, of Trivettes gunsmithing.

PERFECT job on this stock trigger.

Here is a video of me checking on the NRA weights.  Digital gages are great, but....if one competes, you would be served well to get an official weight set.

https://www.youtube.com/watch?v=8nlsLFSyW_E

R/
Chris

[Bluesteel]

 
Hi Chris,

I'm afraid that you are likely to not be qualified for any RFS classification with this build.  It's not a "common Monte Carlo style" sporting rifle, and it's also not "similar to an AR-15" for T-class.  I encourage you to send a picture of your rifle back to the CMP along with the previous reply from them to be sure.  If you get the A-OK, be sure to bring a paper copy of it to the National matches.

[navybowhunter]

Bluesteel,

The rifle is absolutely legal in the T/TR class.

I have an email confirming it from the CMP.

If you read the rules, they can be misleading.  You (and others) are confusing a "Standard" sporter rifle from the T class.

I do appreciate your comment, and Miki's above.  I have received clarification on this.

Not sure how much clearer I could have been in my original description, as I did mention specifically "thumbhole stocks".  BUT.....

Better safe than sorry, and I do not want to have to bring 2 different stocks to Butner with me.

I am sending a pic of the rifle to CMP for clarification once again.



R/
Chris

[Bluesteel]

Bluesteel,

The rifle is absolutely legal in the T/TR class.

I have an email confirming it from the CMP.

If you read the rules, they can be misleading.  You (and others) are confusing a "Standard" sporter rifle from the T class.

I do appreciate your comment, and Miki's above.  I have received clarification on this.

Not sure how much clearer I could have been in my original description, as I did mention specifically "thumbhole stocks".  BUT.....

Better safe than sorry, and I do not want to have to bring 2 different stocks to Butner with me.

I am sending a pic of the rifle to CMP for clarification once again.



R/
Chris

Hi Chris,

I'm not confused.  The Tactical rimfire class definition clearly states (as in the reply you received):

. Legal Tactical Rimfire rifles must comply with the requirements
for overall weight and trigger pull and have a configuration that is similar
to common AR and modern military rifles.

A standard 10/22 with a thumbhole stock doesn't have a configuration similar to a common AR so you'll have to convince them it's similar to some other modern military rifle.  My point is that violating the common sporter rifle rules by using a thumbhole stock, doesn't automatically dump you into the tactical class, anymore than say, having an adjustable cheek piece would.  This is where you're likely to run afoul of the CMP people at the shoot, which is why I encouraged you to send a picture and the previous email from the CMP for final confirmation.

See the CMP guide to rimfire sporter here, in addition to the official rules which you already have.  Note page 9:

https://thecmp.org/wp-content/uploads/Rimfire.pdf

[Birdman]

I have shot the Sporter Nationals for many years. Any rifle with a thumbhole stock is considered "Tactical" or "TR" class, not "T" class. I looked through the cmp pictures but don't have time right now to post a random picture of a thumbhole stock rifle on the line. I will look later.

[navybowhunter]

Birdman, you are SPOT on.

As stated....people are CONFUSING the "standard sporter" with T or TR class.

Above is a cut/paste response from CMP email I received stating in fact that thumbhole stocks are legal.  BUT..., I did send a pic to CMP for yet another take on it.

Also above, is a video of the match at Nationals.  Several different configurations in that video as well.

The point/confusion is however well taken.  The rules can be "confusing" as I know several match directors that have questioned it as well.

Maybe next years rules will be more specific.

The Thumbhole stock I do not feel it gives a significant advantage, but some may think it does.  I wish I could wear a glove....on my trigger hand....as the thumbhole is a bit large.  But....rules prohibit that specifically.

Standing by for a response from CMP.  Michelle has not answered her phone all week....possibly she is on vacation.

I'll post the FINAL response when I receive from her.

R/
Chris