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Joined: Mar 2013
Posts: 56
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: Mar 2013
Posts: 56 |
Rarely do I find something I actually need at a gunshow. Usually its something I see and just end up wanting. Anyway, I needed an affordable 20in HBAR upper to practice iron sight shooting. So I luck out and find this. Standard fixed carry handle a2 configuration....definitely an HBAR contour under the handguards. Only barrel markings are in front of the gas block. The chamber looks parkerized so I assume only the bore is chromed according to the markings. Upper receiver has no markings except the squared forging mark. Bolt is laser marked DT / HPT M......Del-Ton Mfg? Perhaps the bbl is Del Ton as well? Windham? Olympic Arms?
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Joined: Sep 2001
Posts: 19,084 Likes: 2
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,084 Likes: 2 |
It's probably hard to say.
I have a 16" 1/9 chrome-lined HBar that was made by Bushmaster.
A2 upper is always a good thing to have, nice snag.
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Joined: Nov 2011
Posts: 31,075 Likes: 4
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,075 Likes: 4 |
It's probably hard to say.
I have a 16" 1/9 chrome-lined HBar that was made by Bushmaster.
A2 upper is always a good thing to have, nice snag. I have one of those. It's a real shooter.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Joined: Sep 2001
Posts: 19,084 Likes: 2
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,084 Likes: 2 |
It's probably hard to say.
I have a 16" 1/9 chrome-lined HBar that was made by Bushmaster.
A2 upper is always a good thing to have, nice snag. I have one of those. It's a real shooter. Mine's a good shooter too.
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Joined: Nov 2006
Posts: 10,182
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,182 |
Bushmaster is marked BMP, this one is a no name so I wouldn’t put too much hope in it being a shooter. Not saying it will be terrible but the odds are against it.
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Joined: Aug 2010
Posts: 48,169 Likes: 14
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,169 Likes: 14 |
Bushmaster is marked BMP, this one is a no name so I wouldn’t put too much hope in it being a shooter. Not saying it will be terrible but the odds are against it. The only way he's going to know is by shooting it. Ammo plays a big part in accuracy as well. OP, what kind of ammo are you going to be shooting through this barrel? Remember if you are going to be shooting military crap, even the better barrels are only expected to shoot about 4 moa, according to the US military. If you handload, that number can easily be cut in half (sub 2 moa) with a good load.
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Mar 2013
Posts: 56
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: Mar 2013
Posts: 56 |
Mostly 77gr Sierra Match Kings. I have a bunch of Black Hills contract ammo with this bullet as well. I realize that some guys will NEVER say that a 1-9 barrel can shoot........we'll see
Last edited by 1886nut; 12/22/20.
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Joined: Nov 2006
Posts: 10,182
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,182 |
1/9 twist will do fine with 77's.
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Joined: Sep 2001
Posts: 19,084 Likes: 2
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,084 Likes: 2 |
This is my 16" 1/9 CL from Bushmaster. It stabilizes the 77 Nosler, but not the best accuracy. 100 yard distance.
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Joined: Aug 2010
Posts: 48,169 Likes: 14
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,169 Likes: 14 |
1/9 twist will do fine with 77's. Some 1 in 9's will. Having shot the 77TMK at 100 yards with one of my 1 in 9 twist barrels, where moa was normal, stretch it out to 400 yards and groups went to chidt.. The 1 in 9 is right on the threshold as far as bullet stability is concerned when talking 77gr pills. Here's what a bullet stability calculator has to say: Bullet stability calculator Muzzle velocity: 2,700 fps Bullet length: 1.07" Bullet weight: 77 gr Barrel twist: 9.0" Bullet caliber: 0.224" Stability factor: 0.67 The bullet is not stabilized marginal stabilization full stabilization maximal stabilization over stabilization Muzzle velocity > 3,696 > 4,159 > 4,365 > 5,035 Barrel twist < 7.4 < 6.5 < 6.0 < 4.2 Bullet length < 0.98 < 0.92 < 0.90 < 0.77 It is extremely likely that if a guy is getting crap accuracy at 100 yards its going to be much worse when you stretch it out further. In the case of my rifle that I mentioned above, the bullet wasn't keyholing or showing any other signs at 100 yards, but the 400 yard groups told the real story..
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Nov 2006
Posts: 10,182
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,182 |
Plug in the SMK that he has and it might come out different. I only had one 1/9 barrel and it shot them fine however I did not shoot them past 200.
I think rost spoke of a guy that used a 1/9 intentionally out to 600 but they do have to be true 1/9’s and the conversation we had was long ago so I might be wrong.
That said this barrel is a cheaper chrome lined blaster and I doubt he’ll be looking for sub moa at 400 yards.
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Joined: Jul 2015
Posts: 14,747 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2015
Posts: 14,747 Likes: 2 |
Have fun with it, burn it up & replace. Barrels are consumables.
Politics is War by Other Means
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