Im on phone atm googling will be to awkward so I will ask here. Whats the longest length in a .22lr barrel you can get before it starts making a bad effect on the projectile. Also same thing for a 6.5x55.
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Im on phone atm googling will be to awkward so I will ask here. Whats the longest length in a .22lr barrel you can get before it starts making a bad effect on the projectile. Also same thing for a 6.5x55.
.22lr -waaaay back in my remembering I think the projectile starts slowing down after travelling 16 inches of rifling.
And a 6.5x55 -Are people still using these???????? :D
Standard high velocity ammo 13 -14 inches some of the "newer" higher velocity ammo might be helped by an extra inch or two
Somewhere on here is a link in a thread that showes optimum length(velocity) in 22lr, cant remember what thread try searching.
Thanks guys.
Toby, i am a bit sceptical. You are not going to make a .22 out of a bit of old pipe are you?
Nope. Just thinking about it.
When Anschutz introduced their 2013 target rifle they settled on 17.75" with the rest of the "barrel" just being a bloop tube. That is with target velocity ammo though. Anschutz probably know what they are doing. I had an article by a Yank somewhere where he progressively chopped of bits of a 22 barrel with hacksaw, did a very rough crown and tested. Kept cutting until velocity peeked and then started to reduce. Stopped at that point. I cannot remember the exact length but around 15-16" rings a bell. On some of the Yank forums they are also saying around 10.5". Maybe you could do the same experiment with your best 22?
12" 10/22 gave same speed as 18"
One I shortened recently to 12" following Gimps comment above and it made no difference to the gun at all. Except its wicked to shoot now and light as ....
What about accuracy? I just measured 2 of mine 16 and 21 they had no differnce in speed. I know my single shot has a longer barrel then 21" so next time I get the chorny around here I will check it out
Thanks for that. I want a longer barrel for my gun cause I thought it may increase accuracy over 50m. One more thing I was reading in some forum full of americans they said below 12" may be shorter cant remember precisley but that even HV ammo will only be subs. Is this true?
In theory a shorter barrel should be more accurate.
Be careful when reading on accuracy with shortened barrels as some miss informed refer to accuracy loss with shortened barrels but what they are describing is bullet drop which has nothing to do with accuracy.
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Ahhh so much to learn, I love it. So a shorter barrel makes the projectile drop faster. Is that all? If thats the case and velocitys seem to be the same how long can you go before velcocitys drop and start effecting accuracy.
More drop is because of less speed. Same speed same drop. Iron sights, a longer barrel = longer sight radius = easier to shoot accurately, not relevant with a scope. Shorter barrel of the same thickness, all else the same, will be stiffer than a longer one which may mean better accuracy.
I saw a similar test comparing a 9" tube to a standard 18.5" tube. Resulted in higher velocity and less extreme spread in velocity.
My Walther UIT/LS is 16" and I guess it to have been considered optimum length for "standard" match stuff like Eley Tenex etc. When the extension tube and weights are added, it's a metre from the back of the bolt to the muzzle.
Attachment 5536
Here's a look through the scope:
Attachment 5537
Ray.
I've heard that going too short can make some subs go super sonic, though I have a 12.5" tube and have not encountered this.
The Remington stuff does it in mine. Some sub, some not.
Why does remington ammo have that funny crimp mark looking thing half way down the shell. My semi hates rems
The Remington .22 I've tried is crap. Inconsistent speeds and bad accuracy in everything.
Win is better, CCI seems best in the guns I've tried but long bullet makes it hard to close bolts.
My 7 year old nephew with my Savage Shorty was hitting a ten inch steel plate at 200 meters 4 out of five times. That's with Winchester 22lr ammo, not so accurate with Federal.
Its a shame ammo manufacturers have not developed the ammo recently It would be great to be able to buy late model ammo with ballistic tip and hollow point like the .17 ammo variety available.
(I may be wrong here but have not seen any of those) Even subs with a point would they improve the BC by doing so ?
Advantage of .22lr is it's cheap, Vmax style bullets not so much, may not work at .22lr speeds either. Also the way the bullet sits in the .22lr case.
.22 rf ammo Manufactures havnt altered their product because the old style is still making them profit.
+1 what gimp said, when I looked into itt a while ago now thats what I ended up finding out.
Shorter barrel will only cause faster drop if it is so short that all the powder does not have a chance to burn = less velocity like Gimp said.
If you get full burn, then longer barrel only adds friction, and will also start slowing the projectile. If you have an infinitely long barrel, eventually friction will win ;)
Then twist rate comes into it by stabilizing the projectile inflight. See RIFLE BARREL TWIST RATES for some interesting reading.
So what is the length for all the powder to burn?
About ten inches probably. Long barrels are retarded.
:D tobes, you keep asking "piece of string"questions... :P
depends on how much powder you use and also type of powder. So for instance if you have a short barrel and want more velocity, you use a faster burning powder. The variations are almost endless, which is why reloading is so addictive...
More of a hand loading thing, so not really relevant to rimfire, unless you find that different manufacturers use different powder or amounts of powder.
General .22lr ammo. 1250fps 40gr bullets ok. Im starting to wonder why the barrels are so long if you dont need it. Wouldnt it just be makin it worse