MDT ACC or MPA BA for Bergara 6.5
- Thread starter BisSilent
- Start date
Been behind both. Have a lot more time behind the mpa than i do the acc so take this with a grain of salt. The nod has to go to the mpa for me at this point as its just a bit more comfortable. That could change after i spend more time behind the acc. Right now i cant get past the thumb "shelf". Its still a distraction for me in the shooting sequence because i notice how uncomfortable it is compared to the mpa.
I’m a vote for the MDT ACC, I like the option for a folding stock and the weight system.
yes I know the MPA has a weight system as well but I look the implementation of the MDT better.
I also like that the MDT ACC Arca rail is machines into the design and does not need to be attached by another item. With the MPA you need to add an Arca rail.
yes I know the MPA has a weight system as well but I look the implementation of the MDT better.
I also like that the MDT ACC Arca rail is machines into the design and does not need to be attached by another item. With the MPA you need to add an Arca rail.
Don't quite understand that. MPA has the dovetail machined in. Actually MPA was the first company that I am aware of that machined the dovetails into their chassis.
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I've owned both. Had an MPA on my Savage when the MPA first hit the shelves. It was pretty decent. Also had an MPA Lite on a Howa 223 that was good.
Currently running ACCs on both my Vudoo and Surgeon. The biggest thing for me is the amount of ARCA rail on the front. I enjoy shooting matches and the adaptability of running a CKYE pod is pretty awesome, especially when it's mostly positional.
The older knobs on the locking screws on the cheek piece and adjustable LOP of the ACC are much better. The new ones have a plastic cap over a SHCS and are junk. If you go too tight, the plastic slips on the bolt and is pretty much useless.
The MPA didn't have the locking thumb screws and instead has set screws. The thumb wheel would hold the cheek piece and butt pad in place with the set screws a little bit loose, which is also easily doable with the MDT, but if you're going to put thumb screws on the chassis, make them useful.
The MPA also has the flush cups built in, whereas the ACC only has the flush cups in the butt stock, and to get one up front, you need to install one via the MLOK channels. Not a deal breaker, but extra money needed to run a sling.
I guess what I'm getting at is if the MPA had a longer forend, I'd be running MPA.
Currently running ACCs on both my Vudoo and Surgeon. The biggest thing for me is the amount of ARCA rail on the front. I enjoy shooting matches and the adaptability of running a CKYE pod is pretty awesome, especially when it's mostly positional.
The older knobs on the locking screws on the cheek piece and adjustable LOP of the ACC are much better. The new ones have a plastic cap over a SHCS and are junk. If you go too tight, the plastic slips on the bolt and is pretty much useless.
The MPA didn't have the locking thumb screws and instead has set screws. The thumb wheel would hold the cheek piece and butt pad in place with the set screws a little bit loose, which is also easily doable with the MDT, but if you're going to put thumb screws on the chassis, make them useful.
The MPA also has the flush cups built in, whereas the ACC only has the flush cups in the butt stock, and to get one up front, you need to install one via the MLOK channels. Not a deal breaker, but extra money needed to run a sling.
I guess what I'm getting at is if the MPA had a longer forend, I'd be running MPA.
not all the MPA chassis’s have the ARCA rail milled into them from what I have seen.
And that is correct.
Some of the first ones had slots milled in, but they weren't actually ARCA rails.
and even the brand new ones don't work with A419 clamps unless you keep the arcalok pins in
this goes for the chassis and the spigot
Where are you seeing that? Please tell me which MPA BA chassis do not have the dovetail milled in?
I went back and looked at MPA website and looks like all MPA BA chassis have the dovetail milled in.
Have no dog in this fight. MPA and MDT both make great chassis. But MPA was the first to mill in dovetails and best I can tell all MPA BA chassis have dovetail milled in.
Really old ones. Like years and years ago
Their dovetail is questionable either way. Always has been. RAT does not equal RRS standard and is more aligned with -arca- which isn't a standard at all
Of course the old ones did not have it. No one had dovetails cut "years and years ago"
MPA was the first and now all of their MPA BA chassis have them
Is is correct that MPA does not use RRS Dovetail Standard but I have had no issues with any of my gear including RRS brand clamps and ballheads fitting well.
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I had a couple rounds through my 6 Creed/MPA chassis where it rang, but it wasn't a consistent thing and not very noticeable. So maybe?
I have both (MDT ACC and MPA BA Comp). I like both about equally. Both have pros & cons. I wrote a little more about my experiences here.
I was running load dev, so different powder charges. I think it only happened once or twice early on in the series. I shot a quarter-inch 3-round group after confirming I was on paper with the first two rounds, so it didn't seem to interfere with anything.
Iirc, it was intermittent.People still do have the old ones though
RRS ones have mostly worked on the ones I've played with. Same goes for the cheap Amazon ones. The A419 give more issues than anything else. And thats several clamps across several chassis. MPA has been the only dovetail with issues with them in my experience. There's a reason they make MPA specific rails
Damn thread drift....we need some windage correction
Damn thread drift....we need some windage correction
Well, to help a little...I love (and I mean LOVE) the MPA vertical grip. It feels amazing, and I miss it on my Whiskey-3.The other thing I see on the MPA that I don't see on the MDT is a pad on the cheekpiece, so the interface there will be more firm on the MDT. I haven't played with an ACC, and I don't really care if my cheek is touching hard plastic or a foam-ish pad. Just something to note.
I guess the other question is: how much weight do you want to add on? From my understanding, the ACC can accommodate more weight than the MPA. I don't like putting extraneous weight on my gun, so it doesn't matter to me, but it's another thing to consider.
I have shot both, own the ACC. I have long arms and fingers. The adjustment of the ACC grip gets my hand in a little more comfortable position and I don't run NV and didn't want the bridge. I realize they are little things, but that is what tipped the scale for me. I think I would have been happy going the other way as well. Pretty tough to go wrong either way IMO.
One other thing about the MPA Arca system, at least on mine: the rail doesn't go all the way to the end of the chassis. So you can't just slide your...Arca accessory, I guess? on/off the front of the chassis. I found that out the hard way. 
Again, I don't know about the ACC, but it's another thing to note.
Another anecdote: I picked up an Area 419 Arca clamp for my bipod and had to take out the ArcaLock pins. It was inconvenient, but it didn't ruin my day. I haven't run it hard, but the clamp seems to work just fine, compatibility-wise.
Again, I don't know about the ACC, but it's another thing to note. Another anecdote: I picked up an Area 419 Arca clamp for my bipod and had to take out the ArcaLock pins. It was inconvenient, but it didn't ruin my day. I haven't run it hard, but the clamp seems to work just fine, compatibility-wise.
Not true any more the ARCA rail is milled into the chassis but area 419 makes an ARCA rail for it anyway.
I ran a MPA BA chassis all last season and loved it I sold the rifle and changed things up this year. Got an acc for a good price and am going to try it this season. I don’t think you can go wrong with either the both can have folders they both can add weights (MPA is cheaper on weights) the only upgrade either has is the MPA has the thumb shelf which is flat out comfortable. The acc has a longer forend. Both incredible chassis made by 2 of the best companies in the industry, and both support shooting sports like crazy. It’s a very hard toss up. My suggestion is get behind both of you have the ability and pick which one feels the best to you. Not just behind the rifle but on barricades and such because it makes a difference.
If you want a longer rail like the ACC, get the MPA ESR, which has the longer foreend and the ability to add MLOK weights from MDT or Grayops.
You can also get a standard MPA BA Competition plenty heavy with the MPA weight kit and Grayops; my 6.5cm rifle weighs 26lb with a 26" m24 barrel, weight kit, 4 Grayops weights, and a Vortex Razor.
Regarding the Arca "issue", I've had literally no movement with my MPA utilizing RRS products (Anvil 30 and Harris bipod adapter) or the MDT Ckyepod.
You can also get a standard MPA BA Competition plenty heavy with the MPA weight kit and Grayops; my 6.5cm rifle weighs 26lb with a 26" m24 barrel, weight kit, 4 Grayops weights, and a Vortex Razor.
Regarding the Arca "issue", I've had literally no movement with my MPA utilizing RRS products (Anvil 30 and Harris bipod adapter) or the MDT Ckyepod.
