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Thread: Frontier ammo 223
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25-05-2017, 08:25 #21
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25-05-2017, 13:48 #22
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25-05-2017, 14:33 #23
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Re: Frontier ammo 223
If a few bullets out of many lose a jacket or part of it during its flight towards the target but still makes a bullet hole in the cardboard I wouldn't be too concerned. If the "jacket" comes off it does so during flight. I do not see how it could affect the bore. If some of the bullets cause some leading, well the solution is to clean the barrel.
If it is for cheap plinking and making holes in cardboard at typical "Practical Shooting Sports" ranges then CMJ's are fine. In my rifle I get one inch groups at 100 meters. If the OP gets to make bullet holes at 60 meters even though a few jackets come off, I would call that "good enough"
If the goal is to shoot at extreme ranges or whatever I would just get premium bullets designed for that type of thing and live a happy life.
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25-05-2017, 15:47 #24
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25-05-2017, 16:40 #25
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Re: Frontier ammo 223
I remember earlier frontiers doing this, they then apparently increased the thickness of the copper plating. I still have some that do this from time to time!
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25-05-2017, 17:42 #26
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There is a distinct circumferential dent around the bullet which I presume is from the crimp. That dent may create a stress concentration that initiates failure of the jacket at that position, under the rotational load. I do however agree with the previous poster that, if the holes in the paper are where they're supposed to be, I'd not really worry about it...
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25-05-2017, 19:25 #27
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Re: Frontier ammo 223
With a barrel length of 14.5 inches the MV is what?
2500ft/s?
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25-05-2017, 19:28 #28
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Re: Frontier ammo 223
I reckon its around 2600-2800fps
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25-05-2017, 19:37 #29
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25-05-2017, 20:05 #30
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Re: Frontier ammo 223
Cronied around 2480fps from my 14.5" using 24 gr S321 and 55gr bullets. Not sure of batch no.
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