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Thread: BCM SS410 Accuracy?

  1. #1
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    BCM SS410 Accuracy?

    I have the 16" BCM SS410 upper which I shoot reloads out of using the Hornady 55gr BTHP. My lower had an ALG QMS trigger and with this combo, laying prone off a bipod and small rear bag, I would shoot around MOA. Earlier this week I installed a G2S trigger and switched up the bullet to a Nosler 55gr varmint. There was a bit of wind on Sunday but I managed to shoot my best group from this rifle at .71MOA. This got me curious as to what opinions were on the maximum accuracy I could expect from the SS410 assuming conditions were perfect?

    Thanks for in advance for any input provided.

  2. #2
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    I've gotten .7 with mine, but that was the limit of the shooter and ammo that day.

    I don't think the BCM SS410 barrels are second to anything in their price range, and they definitely could do better than what my skill and ammo is capable of.
    Last edited by samuse; 12-14-15 at 11:23.

  3. #3
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    I've had similar results and a little better with 16" SS410 with box CBC Mk262 clone without working too hard. Using SSA-E and 1-4X scope on a bench with bi-pod. Meets and frequently exceeds my expectations.

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    What spring/buffer combos are you guys running with your 16" BCM SS410 barrels? I have a USGI carbine spring/H buffer and it feels quite jumpy. Definitely doesn't have the same smooth recoil impulse that my BCM BFH 16" middy has. Wondering if anyone else has experienced this?

  5. #5
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    Quote Originally Posted by ClearedHot View Post
    What spring/buffer combos are you guys running with your 16" BCM SS410 barrels? I have a USGI carbine spring/H buffer and it feels quite jumpy. Definitely doesn't have the same smooth recoil impulse that my BCM BFH 16" middy has. Wondering if anyone else has experienced this?
    My BCM/SS410 shoots stupid-smooth atop Vltor A5 with the stock spring/buffer as supplied from Vltor. I shot that back-to-back yesterday with another mid-length upper atop a carbine spring/H buffer and was surprised at the marked difference (the A5 was much smoother). YMMV.



    -Rainman

  6. #6
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    Running an A5 set up as well but forget which buffer weight, either H1 or H2. Super smooth and reliable. I have a Silencerco Specwar muzzle brake upfront which definitely helps.

  7. #7
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    16" 410SS middy w/ A5 here.
    Life's a risk, enjoy the adventure - HOPLOETHOS

  8. #8
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    With my 18" BCM SS410 and a SureFire Mini 556 suppressor and a 2.5-10x Burris XTR2 I've shot 5 shot .75" groups at 200yds with CBC 77gr OTM 5.56mm ammo.
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    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  9. #9
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    ^^^Clearly I have some work to do! Would you say the 18“ is inherently more accurate? I need to try off a bench as well to see if that will bring the group down a bit.

  10. #10
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    What kind of firing schedule can these handle? How hard can you push it without damaging the bore?

    Sent from my SM-G900T using Xparent BlueTapatalk 2

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