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Masterpiece Arms CZ455 Chassis

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  • Masterpiece Arms CZ455 Chassis



    Originally a 16" Tacticool. Chassis was delivered in a little over 6 weeks. There's not a whole lot of clearance at the front of the forend so a Lilja straight taper probably won't fit (my McMillans fit the same way but being fiberglass, I was able to open those up). Weight is 11.4 lbs. as it sits.

  • #2
    Very nice. Sad it wont fit full bulls tho.

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    • #3
      A custom fitted shilen .850" straight should fit just perfect .

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      • #4
        How about a benchmark?!

        BTW, I still have not shot the benchmark build. Nearly a year later. But have glass waiting on rings showing up tomorrow, so that will change soon. I don't plan to swap the stock, but if I go to a chassis on my new creedmoor, I might go with a chassis that I can get for both rifles. But I prefer a real stock, so we will see.

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        • #5
          Originally posted by djdilliodon View Post
          A custom fitted shilen .850" straight should fit just perfect .
          Would that be a glue-in with a cone breech?

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          • #6
            Originally posted by kl3309 View Post

            Would that be a glue-in with a cone breech?
            Thats how I would do it. A benchmark could be done but if clearance is an issue, only .900" straight blanks and .920's are readily available. An 850 would need to be custom ordered but the shilen blanks are available and that taper should give perfect clearance.

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            • #7
              Originally posted by kl3309


              Originally a 16" Tacticool. Chassis was delivered in a little over 6 weeks. There's not a whole lot of clearance at the front of the forend so a Lilja straight taper probably won't fit (my McMillans fit the same way but being fiberglass, I was able to open those up). Weight is 11.4 lbs. as it sits.
              I got mine last week and can confirm that a Lilja bull barrel has issues. The front of the chassis clears the barrel by a few thousandths, maybe. The front action screw is too long and can't torque the action to the chassis before hitting the barrel shank inside the action. I haven't had time to shorten the screw and see how it fits when torqued properly.
              Last edited by holdstillplease; 03-24-2017, 08:14 AM.

              "Let us speak courteously, deal fairly, and keep ourselves armed and ready." - Theodore Roosevelt

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              • #8
                Yep, also had to fit the front screw.
                This is the factory varmint barrel with the action torqued to 45 in-lbs.:

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                • #9
                  Wow! that is awesome!!!

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                  • #10
                    Originally posted by kl3309 View Post
                    Yep, also had to fit the front screw.
                    This is the factory varmint barrel with the action torqued to 45 in-lbs.:
                    That's tight. I didn't know MPA made a chassis for the CZ. I think you just opened my wallet to new possibilities. I have been thinking about a Manners to replace my walnut stock on my CZ. Now I might go MPA. I'm sure they can deliver the chassis with a wider barrel channel.

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                    • #11
                      What stock it that exactly? Just went to the MPA website and they don't have any Chassises listed at all anymore. Don't know if they are out of stock or they moved forward to just building complete systems.

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                      • #12
                        The chassis are listed under the MPA BOLT ACTION header: http://masterpiecearms.com/cat/mpa-b...assis-systems/

                        The front of the stock is a massive boxed cross-section so there's no concern that it's going flex or anything. If you had to have a .900 or larger contour barrel, it would be pretty straightforward to mill out that little bridge at the tip of the forend. A Lilja Varmint taper would go in there nicely though.

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                        • #13
                          Looks cool. Is there a benefit to a chassis over say a Manners stock? I will eventually upgrade my stock, trying to figure out what the benefits of a chassis is over a quality stock?

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                          • #14
                            So will a CZ 455 Varmint clear without any issues?

                            I wonder if there would be any ill effects if you were to use shims under the action to gain the barrel clearance desired?

                            Recoil shouldn't be an issue.
                            You can accomplish anything in life, provided that you do not mind who gets the credit.- Harry S. Truman

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                            • #15
                              Originally posted by EddieE View Post
                              Looks cool. Is there a benefit to a chassis over say a Manners stock? I will eventually upgrade my stock, trying to figure out what the benefits of a chassis is over a quality stock?
                              Chief benefit of a chassis over an out-of-the-box Manners (or any other readily available composite stock) is adjustability in LOP and comb height.
                              Last edited by kl3309; 03-26-2017, 05:21 PM.

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                              • #16
                                Originally posted by stillbuster View Post
                                So will a CZ 455 Varmint clear without any issues?

                                I wonder if there would be any ill effects if you were to use shims under the action to gain the barrel clearance desired?

                                Recoil shouldn't be an issue.
                                You could affect the ergonomics by making the trigger and magazine release harder to reach as those will both be pulled up into the chassis since you're raising the action relative to the inlet.
                                Last edited by kl3309; 03-27-2017, 04:55 PM.

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                                • #17
                                  So, I got my action screw issues sorted and got the action torqued into the chassis, I think it's pretty well set up now. The Lilja bull barrel DOES clear the chassis, a dollar bill slides between them without touching and there's no flex between the barrel and the chassis even at the fore end. Here's a photo of how close it clears. I wish it were more centered in the channel, but this should be OK.

                                  "Let us speak courteously, deal fairly, and keep ourselves armed and ready." - Theodore Roosevelt

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                                  • #18
                                    Anybody got a picture of an MPA chassis with the factory 16" tacticool barrel in it? How much clearance does one have?

                                    Also, how easy is it to change the length of pull with a slimmer recoil pad? I ask because my kids will be shooting it quite a bit, but I too will be utilizing it and want a 13"-13.5" lop.
                                    Solve problems by deleting them.

                                    11B/B4

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                                    • #19
                                      Originally posted by K_4c View Post
                                      Anybody got a picture of an MPA chassis with the factory 16" tacticool barrel in it? How much clearance does one have?
                                      Post #1 and #8. Not much clearance but it does float the barrel.

                                      Originally posted by K_4c View Post
                                      Also, how easy is it to change the length of pull with a slimmer recoil pad? I ask because my kids will be shooting it quite a bit, but I too will be utilizing it and want a 13"-13.5" lop.
                                      Apparently, there's now a youth-sized chassis option ( http://masterpiecearms.com/shop/mpa-...y-youth-model/ ) but that'd be too short for you. Ask them if they can set you up with a chassis with both a youth and a regular-sized butt-stock. Don't think you could get less than 13.25" with a thinner pad.

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                                      • #20
                                        Originally posted by kl3309 View Post

                                        Post #1 and #8. Not much clearance but it does float the barrel.



                                        Apparently, there's now a youth-sized chassis option ( http://masterpiecearms.com/shop/mpa-...y-youth-model/ ) but that'd be too short for you. Ask them if they can set you up with a chassis with both a youth and a regular-sized butt-stock. Don't think you could get less than 13.25" with a thinner pad.
                                        Appreciate the feedback

                                        Did you notice any accuracy improvements?
                                        Solve problems by deleting them.

                                        11B/B4

                                        https://m.facebook.com/profile.php?id=247780215346272

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                                        • #21
                                          Originally posted by K_4c View Post
                                          Did you notice any accuracy improvements?
                                          I don't shoot groups with it and I don't use premium ammo so I would not be the one to quantify any accuracy improvement. I can say that due to the improved ergonomics of the chassis, I am more consistent in getting behind the gun and breaking the shot.
                                          If you do go this route, you'll need to try a couple of different grips to get the right fit and feel (my pics show a Griffin Armament AR grip but I've since gone to the BCM Mod 0). And, since your finger will interface the trigger at a lower point, you may have to do some minor contouring of the trigger blade for comfort.

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                                          • #22
                                            Originally posted by holdstillplease View Post

                                            I got mine last week and can confirm that a Lilja bull barrel has issues. The front of the chassis clears the barrel by a few thousandths, maybe. The front action screw is too long and can't torque the action to the chassis before hitting the barrel shank inside the action. I haven't had time to shorten the screw and see how it fits when torqued properly.
                                            How were you able to tell about the front action screw? I didn't think much of it but I do now recall the front screw not torquing down the same way the rear one did. I'm wondering if I've not got the screw into the barrel.

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                                            • #23
                                              Originally posted by .50 Cal Cow View Post

                                              How were you able to tell about the front action screw? I didn't think much of it but I do now recall the front screw not torquing down the same way the rear one did. I'm wondering if I've not got the screw into the barrel.
                                              Pull the front screw and look for marks on the tip. The front screw for mine was long enough that with the front screw bottomed-out, you could undo the rear screw and move the action up and down in the chassis.

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                                              • #24
                                                Originally posted by kl3309 View Post

                                                Pull the front screw and look for marks on the tip. The front screw for mine was long enough that with the front screw bottomed-out, you could undo the rear screw and move the action up and down in the chassis.
                                                Thanks I'll check out both those things tonight. When torquing the action I definitely notice that I didn't get hardly any extra turns stepping from 25 inch-lbs to 45 to 65 as I did when torquing the rear action screw so this might explain that.

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                                                • #25
                                                  Originally posted by .50 Cal Cow View Post

                                                  How were you able to tell about the front action screw? I didn't think much of it but I do now recall the front screw not torquing down the same way the rear one did. I'm wondering if I've not got the screw into the barrel.
                                                  After torqueing to 25 in/lb (CZ spec, not MPA spec) I could lift the barrel up from the action about 3/16" until the front action screw made contact with the chassis. I concluded I was torquing the screw against the barrel inside the action rather than tightening the action to the chassis.

                                                  "Let us speak courteously, deal fairly, and keep ourselves armed and ready." - Theodore Roosevelt

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