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Old 02-13-2012, 03:34 AM   #21
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This is not the Bunker guys. This is an open forum. Let's tone it down please.

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Old 02-13-2012, 03:36 AM   #22
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This is not the Bunker guys. This is an open forum. Let's tone it down please.
Sorry Scott
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"The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together."
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Old 02-13-2012, 05:25 AM   #23
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Aw just when it was getting good!

Maybe now we can argue who can sling a 60gr bullet farther - using 1/9 vs. 1/7 twist.

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Old 02-13-2012, 01:58 PM   #24
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Aw just when it was getting good!

Maybe now we can argue who can sling a 60gr bullet farther - using 1/9 vs. 1/7 twist.
BORING

Let's have a rap battle
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Old 02-15-2012, 08:36 PM   #25
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Would you be able to shoot a 60gr. bullet out of a 1:12 twist?

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Old 02-15-2012, 08:47 PM   #26
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Would you be able to shoot a 60gr. bullet out of a 1:12 twist?
Sure, but not recommended. That's a pretty slow twist to stabilize 60gr and higher.
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Old 02-15-2012, 08:51 PM   #27
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This is not the Bunker guys. This is an open forum. Let's tone it down please.
Ooops!

Did I start all that? Sorry Scott.

Op, buddy, you can shoot any weight you like. As long your caliber marking on your barrel matches the cal/mm of your ammo, your good.

Now if your asking about accuracy, that's subjective. I've had lots of folks tell me that higher twist rates like heavier bullets but my varment upper likes 55 gr all day long for sub MOA groups.

Whenever I'm trying a new gun or barrel, I put the entire range of available bullet weight through it to see which weight groups the best. Once I've found the gr that particular barrel likes I can begin tweaking the load for optimum performance. By tweaking I mean trying the same weight from several different manufactures and in different bullet types because I dont reload...yet.

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Old 02-15-2012, 09:15 PM   #28
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Sure, but not recommended. That's a pretty slow twist to stabilize 60gr and higher.
Is this the same thing that happens with the 5.45 "keyhole" ? a heavy bullet with a slow twist, or is that more to do with the length of the bullet?
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Old 02-15-2012, 09:31 PM   #29
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1:12 likes lighter bullets and does not stabilize the heavier bullets well so accuracy suffers. My 1:12 likes 45 grn a lot but starts to open up at 55 grn. My grandsons 1:9 loves 55grn and would be good into the 60's. 1:7 is preferred for the heavier bullets like 75 grn. Light varmint bullets have been known to break apart with to much spin/twist.
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Old 02-15-2012, 09:34 PM   #30
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Is this the same thing that happens with the 5.45 "keyhole" ? a heavy bullet with a slow twist, or is that more to do with the length of the bullet?
You're referring to those CAI AK-74s that keyhole? I'm not sure what causes it but thought it was poor US replacement barrels for 922r compliance.
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