User Panel
User Panel
User Panel
MO, USA
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Posted: 10/10/2024 1:34:44 PM EDT
[#1]
Criterion barrels seem to run fast when compared to other barrels of equal length. I have seen a lot of velocities posted on here and they all are considerably faster than other barrels.
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Posted: 10/10/2024 2:50:35 PM EDT
[#2]
Quote HistoryOriginally Posted By Blacktoothgrin: Thought maybe you were referring to more than velocity alone. Velocity is pretty important. With it comes terminal performance, drop/drift, and transonic distance. |
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Posted: 10/10/2024 8:21:39 PM EDT
[#3]
Quote HistoryOriginally Posted By Joedirt199: Criterion barrels seem to run fast when compared to other barrels of equal length. I have seen a lot of velocities posted on here and they all are considerably faster than other barrels. I have 4 14.5 rifles. One has a JP barrel, one has a Criterion Core, one has a Mega, and another one has a Ballistic Advantage. The Criterion Core is about 70 to 100 FPS faster than the other 14.5s with 77 OTMs. No idea why. The 14.5 Core is faster than my 16. |
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TX, USA
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Posted: 10/10/2024 11:07:08 PM EDT
[#4]
Things that make a barrel slower ...
More freebore Longer leade Looser bore dimensions Faster twist rate Bigger gas port diameter Lower friction bore |
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MN, USA
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Posted: 10/11/2024 12:45:19 AM EDT
[#5]
If you are getting different velocities from identical length barrels, shooting the same load, the chief culprit is drag. Slightly larger groove diameter = less drag. Taller lands = more drag. Faster twist = more drag. Fewer lands = less drag, potentially. Bore coatings can increase or decrease drag. Most likely it is a combination of all of it to one degree or another. Slugging the barrels can provide a lot of information regarding groove and bore.
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Posted: 10/11/2024 8:57:53 AM EDT
[#6]
Quote HistoryOriginally Posted By DevL: Things that make a barrel slower ... More freebore Longer leade Looser bore dimensions Faster twist rate Bigger gas port diameter Lower friction bore How does lower friction make a bore slower, exactly? |
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Posted: 10/12/2024 12:40:22 AM EDT
[Last Edit: Stowe]
[#7]
Been floating around in what to do limbo for a while. Tonight I came up with a plan. I'm going to duplicate my go to gun's 11.5 with a 12.5 and swap the 11.5 to the truck gun. I'll skip the titanium barrel nut that the 11.5 has in hopes of shifting a little weight back. It seems like a solid plan
Edit: so a criterion core 12.5 |
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Posted: 10/12/2024 9:44:53 AM EDT
[#8]
Quote HistoryOriginally Posted By WUPHF: What other differences were you expecting to see “at distance?” It has less drop and wind drift. Shooting beyond about 400y, the differences become readily apparent when behind the gun. Reread your post, Disregard, reading is fundamental 
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