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Posted: 12/10/2002 10:00:55 AM EDT
Ok, simple question:

Will the Black Hills 77gr SMK round stabilize in a 1 in 9" twist barrel?

Link Posted: 12/10/2002 3:29:36 PM EDT
If the Gods have smiled on you, yes. If not, no.
Link Posted: 12/10/2002 3:42:29 PM EDT
Link Posted: 12/10/2002 4:56:19 PM EDT
Hmm, I know some Us military units are moving to this round. I guess the round stabilizes in their 1 in 7" twist rifles. I guess I will stick to Federal 62 grain JHP or Winchester Ranger 69gr JHP. Thanks, folks!
Link Posted: 12/11/2002 3:21:07 AM EDT
Federal 62 gr JHP.....I've heard this round mentioned in certain circles numerous times yet I have never seen any of it. Is this a special LEO type ammo or what? Also, who sells this stuff? Just wondering.
Link Posted: 12/14/2002 5:01:12 PM EDT
If you have a rifle with a 1 in 8.5 twist it probably will. If you have one with a 1 in 9.5 it probably will not. Both will meet the specs for an 1 in 9 twist. The Hornady 75 grain bullet seem to work great out of an 1 in 9 twist Bushmaster rifle with free float tube a friend of mine is shooting in highpower competition. He also shoots pretty good scores at 600 with the 75 Gr A-Max. I was down in the pitts pulling for him, and saw no signs of keyholing.
Link Posted: 12/14/2002 8:06:18 PM EDT
Originally Posted By hagar: If you have a rifle with a 1 in 8.5 twist it probably will. If you have one with a 1 in 9.5 it probably will not. Both will meet the specs for an 1 in 9 twist. The Hornady 75 grain bullet seem to work great out of an 1 in 9 twist Bushmaster rifle with free float tube a friend of mine is shooting in highpower competition. He also shoots pretty good scores at 600 with the 75 Gr A-Max. I was down in the pitts pulling for him, and saw no signs of keyholing.
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Like he said.
Link Posted: 12/16/2002 6:44:45 AM EDT
went to the range yesterday to answer that question for myself. lo pro classic upper, 20 in 1-9 twist. leupold 2.5x8 scope. 77 smk handloads with 24.5 gr varget shot 1.8 inch 5 shot groups at 200 yards. blackhills 68 gr blue box shot shot 1 inch 5 shot groups at 200. although 69 gr loads shot better there aint nothing wrong with moa 77 gr loads. after i get a match trigger i'm going to test both at 300 and 500 yards.
Link Posted: 12/16/2002 7:01:14 AM EDT
Guess the real question is "[b]at what speed[/b]" as my 77 grn. SMK reloads shoot 0.5 MOA out to 800 yards in good air outta my 24" CR-6724, 1/9" twisted Elite barrel. (their zippin along pretty hot though, about 2850 FPS). I have also shot them (my 77grn. SMK reloads) out to 400 yards out of a Colt M4 chrome barreled 16" and one of the new RRA Chrome-moly 16" M4 barrels and they both shoot better groups than I'm getting w/ my SHTF M193 ammo. So although disagreeing w/ Troy is not something I'm really comfortable w/ perhaps it's the [b]speed/FPS[/b] their movin, that has some bearing on how well they'll shoot out of a 1/9" barrel. YMMV, Mike
Link Posted: 12/16/2002 7:08:47 AM EDT
Originally Posted By Naked80: If the Gods have smiled on you, yes. If not, no.
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The faster the bullet is driven the better the chance of stabilization. I stick by my first post as a short, adequate answer for factory ammo.
Link Posted: 12/16/2002 12:25:45 PM EDT
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