CZ Bren2 Owner: Info, Pics, Mods
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It's not about ammo. It's about ammo that works for _your_ Bren. Problem is we all have different rifles. 8", 11", 14" are all the same (in 556, for simplicity) but when you get to 18.6 we have three factors influencing accuracy of your rifle:
1. Barrel. Dlask short gas converted barrels, Dlask long gas converted barrels, RDSC HB on long gas system, RDSC regular barrel on long gas and I think I RDSC is no selling conversions from short gas system? Those installations are not factory and differ in reliability and quality.
2. Handguard. Original short, US version for 16", HBI of various length. And many install them themselves and incorrect installation will affect fluctuations dynamics.
3. Muzzle device. Especially important on long barrels. It DOES greatly affect accuracy.
Now with all of us having so many possible combinations of options and quality of installation (by RDSC, by DLASK, by ourselves) we most likely will be having different results with the same ammo. Of course usually there's projectile weight that works best for certain twist, but other than that there are tons of factors.
For my Bren so far I found that 55gr reloads and Federal/Hornady V-Max 53gr are the best (1.5-2MOA), but I haven't finished as many tests as I want. This is in following configuration: DLASK short gas conversion + HBI HG + cheapo reverse can with brake.
The closest test to yours was Hornady Black 69gr and it was 4.56MOA. And Another 69gr (Federal Premium Gold Medal SMK) was 1.77 MOA and 2.10MOA on average of two tests (1.77MOA and 2.61MOA) - these tests were done in following configuration: DLASK short gas conversion + HBI HG + no muzzle device.
I strongly believe that ppl should report not only MOA and ammo used but also their Bren configuration.
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What is your rifle configuration and load parameters?
18.6 Criterion barrel, 69 gr smk with 25 ish gr of Varget, Federal small rifle primer. I can confirm that when I get home though. Ironically most gas guns I have shot have likes the SMKs and liked right around 25 gr of varget
Re. Accuracy out of my Bren 2, 11" pistol converted to NR.
Havent handloaded for it yet and havent really focused on accuracy. But here is one thing I've noticed no matter what I have shot through it so far...
I have a surefire muzzle device on the end of the rifle and I also have a surefire warden blast diffuser which attaches to the brake. My groups always tighten up when I have the warden attached.
Example is American Eagle 5.56 55 grain.
2moa Aimpoint red dot resting off my packbag, 5 rounds got me approx. 3.5" at 100M. Not great, not the worst.
With the warden attached I put 3 shots under an inch and a total 2" group because I screwed up 1 of the 5 shots.
Hoping I can just find a load for it that works great without the blast diffuser attached because I only bought it just to see how the attachment mechanism works.
With the long barrel and bulk ammo, harmonics and whip just might be a thing.
One more bit of info , with the Surefire warden attached my groups are tighter but they do drop almost 4" compared to without.
Havent handloaded for it yet and havent really focused on accuracy. But here is one thing I've noticed no matter what I have shot through it so far...
I have a surefire muzzle device on the end of the rifle and I also have a surefire warden blast diffuser which attaches to the brake. My groups always tighten up when I have the warden attached.
Example is American Eagle 5.56 55 grain.
2moa Aimpoint red dot resting off my packbag, 5 rounds got me approx. 3.5" at 100M. Not great, not the worst.
With the warden attached I put 3 shots under an inch and a total 2" group because I screwed up 1 of the 5 shots.
Hoping I can just find a load for it that works great without the blast diffuser attached because I only bought it just to see how the attachment mechanism works.
With the long barrel and bulk ammo, harmonics and whip just might be a thing.
One more bit of info , with the Surefire warden attached my groups are tighter but they do drop almost 4" compared to without.
If you dont have 69 gr SMKs, you can try 62 gr Nosler Varmeggons. I've also had great success with those. Every SL8 I've ever owned shot them 1/2-3/4 MOA. X95 didn't like them. but most others do. Buddy's ACR loves them too. All the guns are either 1:7 or 1:8 twist
I got 4.5 moa with v max. I shot a .38 with my 338 and I shot several .6 mo groups with my bolt rifle same day. I have tried 7 different loads. Long barrel with long hand guard all from Marstar…
Did the welfare muzzle device they provided negatively affect accuracy for you? I am not sure why they didn’t give us the 3 prong one it was designed to use.
I actually haven't tested this combination. I have tested "no device" and reverse can with brake.
I run the t2 with lower 1/3 1.57” scalarworks. Pretty sure the 1.93 is too high for any cowitness. Although with the scalarworks quick detach system u could always pull it off quickly if the optic failed and use the buis. But again you are running a t2 probably would never need buis when you have a bomb proof optic like that.
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