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Looking closer into velocity and accuracy effects.What effects are your asking about. Pretty general almost too general of a question. Do you have a specific area, velocity, ES, SD, or POI shift with a suppressor vs non-suppressor?
This!Do not over complicate.
You aren’t trying to make excuses for your misses are you.?
No. I have heard before that a 20" barrel is all that is needed to obtain the full potential of a .308. Before believing I want the facts. Plus lugging around a 28" varmint barrel is not as fun as it used to be.I have 26” .308 barrels down to 20”.
Speed is the only difference practically speaking. I don’t chrono anything so who knows with the es/sd bullcrap. I make the same hits with all. The shorter tubes need a few more tenths of elevation. Do not over complicate.
You aren’t trying to make excuses for your misses are you.?
it prolly depends on how far out you really want to go.No. I have heard before that a 20" barrel is all that is needed to obtain the full potential of a .308. Before believing I want the facts. Plus lugging around a 28" varmint barrel is not as fun as it used to be.
Do you know of any credible tests out to 1000 with a 20" barrel.it prolly depends on how far out you really want to go.
i have heard the opposite, that 20" isn't enough to hit out to 1000 yds or beyond (at sea level) *consistently.
this was from somebody that claimed to compete regularly in california (at near sea level).
the claim was that the extra velocity from a longer barrels made a difference @ 900 yards and out (at sea level).
self proclaimed expert says 20" rifles are out of the the competitions at 900 most of the time.
*expert defined "effective or consistent" as being able to walk out on any day, under any conditions, calculate dope and get a first shot hit.
"if you have to take a few shots to hit it, it isn't effective at that range..."
here on SH however, many shooters say 1000 is within the effective range of a 20" .308, and they do it all the time.
i have only taken my 20" .308 out to just over 600 yards (max at the range), so i am not able to say from experience either way.
most of my focus has been on my own rifle (Scar 20S) which is somewhat handicapped with a 1:12 twist.Do you know of any credible tests out to 1000 with a 20" barrel.
Primary range for the rifle is probably max 800 but not counting out occasional 1000 yard shots. It's kind of one of those things I want to be prepared for just in case.
Do you know of any credible tests out to 1000 with a 20" barrel.
Primary range for the rifle is probably max 800 but not counting out occasional 1000 yard shots. It's kind of one of those things I want to be prepared for just in case.
My apologies, should have been more specific. This is 6.5 Creedmoor with factory Hornady ammo.Are these .308 results?
is that 1:10 twist? were you using 200gr+ bullets, hand loads or factory FGMM?The longer the distance is, the more environmentals such as wind come into play, which more velocity will help to negate.
If I was shooting 1000 yard F-class or benchrest, I would take a longer barrel for more velocity to improve ballistics and mitigate the environmentals as much as possible.
However, I don't play those games, and my 21.75" bbl TacOps rifle in .308 shoots more then fine and predictably to 1,200 yards (furthest I've shot it). A lot of that shooting was done close to sea level.
A 24"+ barrel is no more accurate then a 20" barrel. In fact, if you believe the Houston Warehouse lore, they found 21.75" barrels to be the most accurate. How true that is I don't know. The differentiator for barrel lengths is velocity, the more of which you have helps mitigate any change in environmentals. So it's not so much a matter of pure accuracy/precision, but one of mitigating elements out of your control.
is that 1:10 twist? were you using 200gr+ bullets, hand loads or factory FGMM?
nice, thanks!1:10 twist with factory FGMM 168 and 175's.
nice, thanks!
so you're saying there's a chance...lol
i can spin 175gr SMKs, even with 20" 1:12, so i'll have to see for myself. velocities might not be that different.
i plan to try the higher velocity superformance match, even though not SMKs, if i can't get there with FGMM.
I'll have to look into that 21.75" test since I was leaning toward a 22" to 24".The longer the distance is, the more environmentals such as wind come into play, which more velocity will help to negate.
If I was shooting 1000 yard F-class or benchrest, I would take a longer barrel for more velocity to improve ballistics and mitigate the environmentals as much as possible.
However, I don't play those games, and my 21.75" bbl TacOps rifle in .308 shoots more then fine and predictably to 1,200 yards (furthest I've shot it). A lot of that shooting was done close to sea level.
A 24"+ barrel is no more accurate then a 20" barrel. In fact, if you believe the Houston Warehouse lore, they found 21.75" barrels to be the most accurate. How true that is I don't know. The differentiator for barrel lengths is velocity, the more of which you have helps mitigate any change in environmentals. So it's not so much a matter of pure accuracy/precision, but one of mitigating elements out of your control.
I'll have to look into that 21.75" test since I was leaning toward a 22" to 24".
Anyone who says a 20" .308 can't hit consistently at 1000 is someone I wouldn't listen to and is no "expert". Probably old 168 SMK thinker with mention of 900 yard max. With today's .308 bullets it is quite easy to do.
And better tell all the F Class shooters to turn in their 28-30" barrels for those more accurate 21.75" barrels. Man you got to love the internet. LOL
The article was just to read for my own gain. Thanks the info.Secrets of the Houston Warehouse
www.angelfire.com
I wouldn't read into it too much. For short range applications, which the above is essentially all about, perhaps a shorter barrel may be more accurate then a longer one due to barrel harmonics. In reality, most shooters wouldn't be able to shoot the difference, assuming there is one.
My best 100 yard 5 round group is from a 28" barrel (picture below). If that barrel was 21.75" would the group below be smaller? I really don't think so.
View attachment 7210515
Figure out what applications you want to use the rifle for, and from there decide what the optimal barrel length is. I wouldn't get too hung up on the Houston Warehouse 21.75" thing. That's UBR benchrest with pretty much zero environmentals, and it's really all hearsay. There's no evidence that I'm aware of to corroborate it. My point is that there is no practical difference in accuracy between short and long barrel, just velocity and down range ballistics to help counter environmentals.
Fake news. Longer barrel equals higher velocity regardless of powder burn. PeriodNo. I have heard before that a 20" barrel is all that is needed to obtain the full potential of a .308. Before believing I want the facts. Plus lugging around a 28" varmint barrel is not as fun as it used to be.
This.Give it a go and find out for yourself, it's really the only way to find out.
Thankfully this kind of learning is really fun, so enjoy. Your setup is probably more capable then you realize.
This.
I really enjoy lobbing shots out there and seeing what happens.
Sometimes your kinda disappointment and sometimes your pleasantly surprised.
I just came in from banging away at 900 with my .308.