BCL MRX Bison First Impressions

driller212

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Hey folks,

I thought I would post my first impressions of the MRX Bison. First off, it seems to be very good quality. There isn't a blemish on it, and it gives off the feel of a high quality firearm. It doesn't feel 7lbs, it feels lighter to me. Obviously it is short and handy, and points quick. I am mounting a burris fullfield II 2-7x32 on it which I think will compliment the rifle nicely. The bolt throw at 60 degrees is pretty neat, and the enlarged bolt handle is nice in the palm. The square handguard looks really good, and is small enough that its not really uncomfortable in the hand, but its not comfortable either. I would have prefered a rounded bottom to the handguard. The M-Lok slots are handy, and the side ones are removeable which I assume is for ease of mounting new accessories. I added a large cheek riser I had in my spare bits bin and cheek weld is perfect. I like that it came with magpul furniture and not some cheap stuff like the later gen BCL-102s had. The muzzle brake is just plain idiotic as its going to deafen you and anyone in a 50ft radius ear pro or not. I have a S&J nano linear comp on the way to solve that issue. SBR rifles really benefit from linear compensators in my experience. The nano will also shorten the OAL of the rifle by maybe a half inch. The magazine it comes with makes no sense to me, but whatever. I'll probably sell or trade it. This rifle will be using cross mags. I have some handloads already made up so a range trip is near in my future. For now its cheap bullets and low weight but I plan to work on some loads for heavier projectiles as you get the most of an SBR with heavier bullets.

I pretty much bought this thing for a good cheap to shoot medium range precision ( likely sub 500m most of the time, and maybe stretch to 800m if I'm feeling crazy) practice setup that can fit on my motorcycle so I can dual sport my way to some remote areas and set up a temporary shooting range. Its gonna be a great way to go shooting. The nice thing is being 1k I am not going to be so worried about scratching it up etc.

EDIT: forgot to mention the trigger. It's a drop in trigger tech (comes standard). So it's super light with a clean break.

Overall this rifle seems like huge bang for the buck so far, but the true test is a lot of range time and use.

First range trip should be in a week or two and I plan to report back then.

Don't mind the mess, I am in the middle of packing the gun room for a move.

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Thank you for posting this, especially given that previous to this the only information we could get on this is from BCL's marketing materials and promotional videos. I think a number us are sitting on the sidelines to see some real world data before taking the plunge on a new product.

Sweet set up on it - really like the Burris scope choice.
 
I will be watching for an update after you've put a few hundred pills downrange. But your initial impressions are encouraging.
 
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Rifle is supposed to be 6.9lbs dry.

Twist is 1:7

Hoping to sneak to the range early morning Friday to get it sighted in and get a couple of preliminary groupings.

Why get 16 when you can get 12? :p
 
Yes indeed. It seems that anything shorter such as 11.5 or 12 inches of barrel with 223 in reality you are just holding a really loud 22 Hornet between your paws.

Needs a cheek riser.

depends what components you use to handload rounds, but for 55gr its pretty close.
 
Thanks for the first impressions! Been following these since they were first teased. Very excited to see it come to market. I have one of the short remington .308's, it's a hoot.

Please keep us updated with the handloads, I'm eternally grateful to Camp Cook for the work he did with load development for the short .308 and I'm interested to see what you come up with. Quickload had a bunch of data that's been helping me with alternate powders as 4895 doesn't fully burn in such a short barrel. D5744 is much faster and seems to be working well for 130gr pills.
 
Thanks for the report.
Is the top of the handguard removable?
I wonder if they'll expand the chamber offerings, 224 Valkyrie or 6mm ARC or similar?
 
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Unfortunately Pif, I've only got about 5 lbs of D4895. But someday I may experiment with other powders.

Scourge, the top handguard is indeed removable. I'm curious to see how much weight it shaves off.
 
Unfortunately Pif, I've only got about 5 lbs of D4895. But someday I may experiment with other powders.

Scourge, the top handguard is indeed removable. I'm curious to see how much weight it shaves off.

I just ran IMR 4895 through QL with 55gr Sierra HPBT, if you can get 22gr+ into a case you will be around 2200fps with 72% powder burn before end of barrel. Accurate 5744 (Dominion D5744 analog) shows 2700fps with 98% burnt. This is not practical advice, this is a monkey punching a calculator. Start with minimum loads and work up.

I'm sure there's more optimized powders out there, but there's not a lot available right now. I had hoped 5744 would help with the muzzle blast some, but I can't say I notice a change. Linear comp has helped me a bit.
 
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