MDT ACC 455 Chassis, BSCAR, Bartlein Review/Testing

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  • Mar 13, 2013
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    Southeastern, Pennsylvania
    Finally got out to do some testing with the new MDT ACC 455 chassis. This thing is unlike any other 455 chassis on the market today. Big thanks to the guys over @ MDT for continuing to innovate and bring new products to the market. They have been on fire lately! Thank you @MDT_OFFICIAL

    Being able to have a chassis that mimics your centerfire/competition chassis for your CZ 455 is awesome. I was running both the new MDT ACC CZ 455 and MDT ACC with my Origin/220TB today and its nice to be able to set them up the same way and have the same feel between both of them. I have 3 internal weights installed inside the forend and 2 on the outside of the forend.

    A thing to note, minimum barrel length to clear the end of the forend on this chassis is 20" just an fyi. I was shooting Bartlein's drop in 0.900 straight blank cut rifled barrel in 18" which doesnt clear the forend but with the Rugged Oculus it does. I also have installed the BSCAR 2 stage trigger that Bill send me to review with this chassis and barrel and all I have to say is WOW. Nothing available on the market today for the 455 that compares to this trigger. Fully adjustable, I have it set with a 8oz second stage and this thing is crisp as hell. Cant say enough good things about the BSCAR trigger.

    I only got a chance to shoot the ACC from the bench today. By the time we moved over to the 700yd range to stretch its legs and do some positional shooting the skies opened up and we got dumped on and had to call it for the day.

    One thing to not is the magwell on the ACC is large and similar to the ACC chassis so the OEM mag latch or even a DIP extended mag latch are way up in the magwell. Not easy to make quick mag changes. MDT is working on a new magazine release and I am really looking forward to testing that out which will be icing on the cake for this beautiful chassis.


    More to come! Stay tuned!


    Here's some quick 10 shot groups we shot at 50yds from the bench testing the 18" Bartlein with the Rugged Oculus attached. Not bad for rushing and subpar weather conditions.

    Man those 2 ACC's look sexy as hell together!











     
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    Good to see. Just ordered a bartlein for my 457. Haven’t seen or heard much about the bartlein yet.

    They shoot. I did a little testing without a can in the LSS-22- and it wad hammering tiny little 10 shot groups with R50...more to come. Frank has my second action right now putting a 20" on it to test as well to clear the forend of this ACC.
     
    I didn’t realize this was your post, pardon. I took your advice and got a barrel ordered up for my 457. Finished at 20” with all the options. Going to put it head to head with my 457 MTR
     
    As of now, the length of the forearm is a deal breaker for me. I have a 16 3/4" barrel with approximately 15 1/2" sticking out of the receiver. If they (or any manufacturer) would offer custom forearm lengths, that would be awesome. Throw in a usable magazine release...... Sign me up
     
    Hey 45cal4life, if you have a short barrel we do have the LSS-RF Gen2 which has some upgrades to allow the use of two pairs of external weights and you can add an M-LOK Arca rail under the forend which is 8" long gives you enough room to balance yet short enough to clear any factory barrel.
     
    Got the MDT ACC 455 out to the long range today and fed it a steady diet of Center-X. I love this chassis. I shot it from the bench, prone and from a few props @ 300, 400 and 500yds.

    100% hit ratio @ 300 and 400yds and 50% hit ratio @ 500yds. So much fun and with the weights installed in the barrel channel and 1 set of exterior forend weights this thing just sits there, pull the trigger and impact. This 22 is SO much fun.


    6" plate @ 300yds 12.9mils
    12"x20" @ 400yds 21.5mils
    12x20" @ 500yds scope dialed to max 20mils, holding below 10mils on reticle for 31mils