onetwentyish
CGN Ultra frequent flyer
- Location
- East Central AB (AKA Northern Texas)
Mag issue? I allready have AA mags.
Bushmaster ACR DMR Accuracy and Favorite Loads
- Thread starter BadAsMo
- Start date
Mag issue? I allready have AA mags.
Rcmp SFSS interpretation that all 50 beowulf mags are prohibited and a person currently before the courts in Ontario on those charges stemming from that interpretation in the FRT table and on multiple documents and emails the SFSS has sent out
onetwentyish
CGN Ultra frequent flyer
- Location
- East Central AB (AKA Northern Texas)
I know. But unfortunately they dont make the laws.
Also you can buy .50 beowulf mags that have a flat follower. Those wont be prohibited anytime soon.
Also you can buy .50 beowulf mags that have a flat follower. Those wont be prohibited anytime soon.
onetwentyish
CGN Ultra frequent flyer
- Location
- East Central AB (AKA Northern Texas)
Have you looked on the ACR forum? The ones I speak of were produced by a forum member there, and this was in the last 6 months.
canucklehead
CGN Ultra frequent flyer
- Location
- Calgary, AB
Every ACR I've ever owned (4 of them) was capable of somewhat better accuracy than what is shown in that Calibre mag review. This includes two Herron Arms builds (one GM and one Bartlein), one Dlask (GM blank) and the DMR (OEM).
The worst groups I got was with Winchester white box (2.5") and the best was my own 55gr VMAX loads (.75" or less). Good results with PMC X-Tac Match (77gr) as well (about 1").
The worst groups I got was with Winchester white box (2.5") and the best was my own 55gr VMAX loads (.75" or less). Good results with PMC X-Tac Match (77gr) as well (about 1").
I get my best groups with vmax as well, just a smudge over 1moa
Regardless of who has the ability to make laws, the RCMP clearly have the ability to arrest you on the matter, have charges laid against you, force a firearms ban on you, and many other nasty and costly things while you await trial for at least a years.
I don't expect many to understand the costs you potentially face and many are skeptical of it even being able to happen to them. But every year people are charged frivilously and pay a huge price with effects lasting many years even after a judge tosses the case.
The SFSS opinion has been clear in that ALL 50 beo and 458 Socom magazines they have seen are prohibited unless limited to 5 rounds of 223/556. If your rifle is NR and exposed to police checks or CO's out in the bush regularly, it is not worth the risk of losing everything to me so mags can only hold 5 rounds of 223/556 until a legal decision is reached
OK guys here's an update...
This first group was typical of how the gun was shooting first time out to the range.
Again using the same lot of 69 grain SMKs.
Then I did the trick I mentioned above where I pulled on the lever as hard as I dare while having someone tap the trunion nut with a plastic hammer to nudge it a little tighter.
This technique seems to have done the trick.
Yesterday at the range this was a typical 5 shot group. 3 round groups were better (like less than an inch) but that's just because 3 is not enough rounds for reality to show up. 5 round groups around 1.5 inches. 10 round groups were usually around 2 inches at 100 yards.
So I'm pleased to report this news. It's a relief.
At least now it's close enough that it's worth a little load development. Maybe I can get it a little better.
I think that little spacer between the barrel flange and the barrel nut tunion should have been like this. It's a self centering spherical spacer set to ensure pressure is applied evenly.
It's very difficult to produce threads that under pressure remain flat and parallel under light hand pressure. You might get lucky with a good one that will work nicely with light pressure, or one that's not quite square that requires gorilla force. but.. with self aligning spherical spacers like these below, it would just seat the barrel more evenly.
I hope Bushmaster reads this one day.
This first group was typical of how the gun was shooting first time out to the range.
Again using the same lot of 69 grain SMKs.
Then I did the trick I mentioned above where I pulled on the lever as hard as I dare while having someone tap the trunion nut with a plastic hammer to nudge it a little tighter.
This technique seems to have done the trick.
Yesterday at the range this was a typical 5 shot group. 3 round groups were better (like less than an inch) but that's just because 3 is not enough rounds for reality to show up. 5 round groups around 1.5 inches. 10 round groups were usually around 2 inches at 100 yards.
So I'm pleased to report this news. It's a relief.
At least now it's close enough that it's worth a little load development. Maybe I can get it a little better.
I think that little spacer between the barrel flange and the barrel nut tunion should have been like this. It's a self centering spherical spacer set to ensure pressure is applied evenly.
It's very difficult to produce threads that under pressure remain flat and parallel under light hand pressure. You might get lucky with a good one that will work nicely with light pressure, or one that's not quite square that requires gorilla force. but.. with self aligning spherical spacers like these below, it would just seat the barrel more evenly.
I hope Bushmaster reads this one day.
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Agreed, even though you are technically in the right and will most likely have all charges dropped eventually it's just not worth the risk of having my guns taken away and having to spend time in court just to hold four or five more rounds. I've been saying for a couple years (from back when a Beowulf mag was $100+) that the money would be better spent donating to groups like NFA and CSSA to have lawyers fight for our right to remove the neutering rivet from our pmags.
They may not make the laws but they are the ones putting you in cuffs and taking away your property based on their interpretation of the poorly worded laws and their released notifications.
And how many of those do you own? How do they feed 223?
I think the notice they released covered every single STANAG pattern compatible magazine that wasn't marked pistol. If it fits an AR and holds more than 5 rounds of 223/5.56 it better be marked pistol and then it better not hold more than 10. People are free to run whatever they want but to me it's just not worth the trouble you may have to endure just to have 5 more rounds before reloading.
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there is a couple flaws with your idea that you will eventually be exonerated if charged.
The police and crown finally have their case that will see trial after dropping others. Make no mistake that the crown is supporting the RCMP as the only entity to make gun legality decisions in the country and will go as far as changing laws to enable them if necessary.
You mention the CSSA and the NFA, they will not touch this issue with a 10ft pole because of the optics in the media that will be portrayed followed by the demands for stricter regulations.
OK so I didn't do the testing I wanted to on the ACR. Although I wanted to post this anyways as I was pretty impressed.
So I was going to go to the range and dial this gun in but my buddy got a new 338 lapua and wanted me to bring mine and go with him to our long range spot on crown land. So I brought my 260 and the ACR with me as well. I knew this spot we can't set up 100 yards. We shoot off a small cliff across some rocks and swampy area. So literally the shortest we could set up without going swimming or shooting at rocks was 155 yards. So knowing this I didn't bother with any loads for the ACR. I knew I wouldn't get a true test. So I just brought a box of Wiinchester ballistic tips. 55 grain. And some MFS crap. just to sight it in and maybe do a 10 round group. I had to shoot it.
Now before everyone gives me the oh we can't confirm this cause you could suck or not k ow how to reload etc. Here's 2 sheets with my 260 today. All are 5 shot 5 groups. 2 different bullet types. Temps were -10 wind was blowing about 25kmh.
[
So enough bragging. I sighted the ACR using some of the Winchester bullets. I then banged off some MFS crap. I'll be honest with the MFS I could hardly keep all the bullets on the page at 155. Not exaggerating at all. It for sure does not shoot that stuff well. We shot 40 rounds. And wow it was bad. Maybe it was a clean barrel. I don't know. We were shooting prone with all guns. The 260 is a custom bolt rifle with bipod and a small bean bag at back. With the ACR I just used a backpack and my bean bang at back. So then I Ifired 10 rounds of the Winchester and I must say I was rather impressed. again I was not taking it to serious. I have a leupold vx3 2.5x8 on there. And shooting off a backpack, with medium grade factory ammo. The group's tightened up. Nothing impressive I know. But I mean if I set up a bipod. Did some quality reloads. I think I can easily get this gun shooting sub MOA.
Hope some.of you find this information useful. I'll be doing some real testing within the next few weeks. I am really curious now after that group.
So I was going to go to the range and dial this gun in but my buddy got a new 338 lapua and wanted me to bring mine and go with him to our long range spot on crown land. So I brought my 260 and the ACR with me as well. I knew this spot we can't set up 100 yards. We shoot off a small cliff across some rocks and swampy area. So literally the shortest we could set up without going swimming or shooting at rocks was 155 yards. So knowing this I didn't bother with any loads for the ACR. I knew I wouldn't get a true test. So I just brought a box of Wiinchester ballistic tips. 55 grain. And some MFS crap. just to sight it in and maybe do a 10 round group. I had to shoot it.
Now before everyone gives me the oh we can't confirm this cause you could suck or not k ow how to reload etc. Here's 2 sheets with my 260 today. All are 5 shot 5 groups. 2 different bullet types. Temps were -10 wind was blowing about 25kmh.
[
So enough bragging. I sighted the ACR using some of the Winchester bullets. I then banged off some MFS crap. I'll be honest with the MFS I could hardly keep all the bullets on the page at 155. Not exaggerating at all. It for sure does not shoot that stuff well. We shot 40 rounds. And wow it was bad. Maybe it was a clean barrel. I don't know. We were shooting prone with all guns. The 260 is a custom bolt rifle with bipod and a small bean bag at back. With the ACR I just used a backpack and my bean bang at back. So then I Ifired 10 rounds of the Winchester and I must say I was rather impressed. again I was not taking it to serious. I have a leupold vx3 2.5x8 on there. And shooting off a backpack, with medium grade factory ammo. The group's tightened up. Nothing impressive I know. But I mean if I set up a bipod. Did some quality reloads. I think I can easily get this gun shooting sub MOA.
Hope some.of you find this information useful. I'll be doing some real testing within the next few weeks. I am really curious now after that group.
Yes that's pretty good considering the 55 grain bullets you used are not well suited to a 1:7 twist barrel which I assume is what you have as well.
It should shoot much better with 69 grain or heavier bullets.
I hope you post results with heavier hand loaded rounds later.
It should shoot much better with 69 grain or heavier bullets.
I hope you post results with heavier hand loaded rounds later.
Yes I am going to be loading the heavier bullets. And will be using varget and 8208 xbr. I seem to always have good luck with the 8208 in my 223. unfortunately I am heading to Florida this week so it will be in a few weeks.
I am positive I can reload this gun to shoot respectable.
Not sure if anyone still cares.... But Thursday I'll be heading to the range with some test loads. I should post results Thursday night.
I have loaded in groups of 10.
8208 xbr hot load with 55 grain.
8208 xbr moderate load with 55 grain.
8208 xbr hot load with 69 grain.
8208 xbr moderate load with 69 grain.
Then I did the exact same as above with varget.
Should be a decent test. I'll be doing 2 5 shot groups.
I have loaded in groups of 10.
8208 xbr hot load with 55 grain.
8208 xbr moderate load with 55 grain.
8208 xbr hot load with 69 grain.
8208 xbr moderate load with 69 grain.
Then I did the exact same as above with varget.
Should be a decent test. I'll be doing 2 5 shot groups.
I'm definitely interested to see your results, especially with varget.
Why not just load five of one then five more with 0.3gr more then 0.3gr more till you get to book max? The way you're doing it seems like you're just hoping to hit an accuracy node which is possible but unlikely and relying more on luck than anything else. You're also not going to see pressure signs slowly show themselves as you increase charge weight but instead may end up too hot on your fast load.
I think you would have a better chance of safely finding a load your barrel likes doing a proper ladder test and working upwards.
Good luck either way, I'm interested to see how it turns out.
I really need to make some time to do some load development for my ACR this spring. Getting tired of shooting AE black box through it.
I will do exactly that. With precision rigs I will normally do exactly what I have done above but with 4 or 5 powders and 4 or 5 bullets. The gun will.still show me which powders and bullets it likes better. Once I see that I then start playing with loads to see what pressures it likes best. If I have 2 that are close I will play with the both of them. I am not expecting to go out there on Thursday and nail a 1/2" group. I want to show a true unadultered test of this rifle. I showed what it did with some basic factory ammo. Now I want to show preliminary tests. Then another week I'll do more fine tuning. Point is to show folks on here if this gun is capable of anything.
