.22 LW barrel vs .22 Discovery barrel for .22 jsb beast 33.96gr

[K.O.]

Oh pine tree side rested standing in 2.5 feet of snow with 16$ Tasco 3-7x20 scope...

[K.O.]

Very interesting, Bob.
I must digest your information. For your bullet  and heavier I understand that it is better with .22 hornet barrel.

The 22lr barrel is too big for pellets or the 30 grain BBt. Either the crosman or LW barrel is your best bet . Keep the cost low , your gonna go through piles of lead to find out what speed your barrel likes best anyway .

I have to save up some $ to get them milled/converted for  the .25 Mrod breech and even even tho the BBT 30g are Dropping small for me right now the push thrus look pretty good...

one is a 1950s Dane target bull barrel and I think they tended to be tight compared modern barrels... then there is the 50's Beretta hammer forged choked barrel... but first will be pushed thru my 14.5 .22 L.W. blank since that is what he asked about... a bit hard to start as it is not chambered yet...oops camera batt needs charged the Beretta pics will have to wait a while..

[rsterne]

The .217/.219 BBT looks a better match for your LW barrel when pushed right through the choke.... without the choke, the larger 0.220/0.222" looks better, IMO.... although the chamber should be longer, with a leade, so that the drive band is not engraved when chambered.... As is, they will likely be difficult to chamber.... (I see you said no chamber, OOPS!)....

The .220/.222 BBT looks like it should work just fine in the .22LR barrel you have.... worth a try, for sure....

Bob

[K.O.]

The Beretta Hakim barrel looks even more like it will  do well... camera battery is charging..
they fell thru the Marlin .22 Mag Barrel and I used my breath to send the .220 out of the very seasoned Marlin .22lr but did not fall thru...

My .220/222 is dropping way under spec... I am hoping it is the heat/alloy I mean  .002-.003 under is disappointing if not... .219/217 are

Dropping at  about.2188-2193 band and 2162-2165 nose parting line-oposite nd parting line...

Pre trying to burn the tin and trace antimony out the .252/.250 39.8g BBT came out just about  .2525-.253 band and .2495-.2501 nose...

Do not have any post high temp .252/.250 to measure(shot them all

 I need to do some reading...      https://www.google.com/search?q=does+pure+lead+shrink+more+than+lead+tin+alloy&rlz=1C1GNAM_enUS688US688&oq=does+pure+lead+shrink+more+than+lead+tin+alloy&aqs=chrome..69i57.31096j0j7&sourceid=chrome&ie=UTF-8

[K.O.]

above #s  include  the +/- .00016 of the tool.

and the MK1322's leade was done with the sandpaper method most CPD and CPHP 14.3 fall just past the transfer port... I use a short bolt and make sure the pellets are seated with an L shaped seating tool...

The .217 seated with very little resistance   the .220 needed a bit of a push.

[K.O.]

The Italian... needs turned for .5" breech, a leade and t-port and sealing area. I think Close Cousin to the  Beretta Super Sport, Sport and Olympic...

page two for their barrel specs me I think it is a taper bore then choked at 1.5" from muzzle... 1:15.75  twist...

http://stevespages.com/pdf/beretta_22.pdf

More push thru and muzzle rifling pics at reply 13 this thread...

http://www.gatewaytoairguns.org/GTA/index.php?topic=100933.msg948810#msg948810

[Hobbyman2007]

Very interesting, Bob.
I must digest your information. For your bullet  and heavier I understand that it is better with .22 hornet barrel.

The 22lr barrel is too big for pellets or the 30 grain BBt. Either the crosman or LW barrel is your best bet . Keep the cost low , your gonna go through piles of lead to find out what speed your barrel likes best anyway .

I have to save up some $ to get them milled/converted for  the .25 Mrod breech and even even tho the BBT 30g are Dropping small for me right now the push thrus look pretty good...

one is a 1950s Dane target bull barrel and I think they tended to be tight compared modern barrels... then there is the 50's Beretta hammer forged choked barrel... but first will be pushed thru my 14.5 .22 L.W. blank since that is what he asked about... a bit hard to start as it is not chambered yet...oops camera batt needs charged the Beretta pics will have to wait a while..

Not the first time I've put my foot in my mouth. I don't even mind the taste anymore  As a general rule the .22lr barrels are specked out at .224" . Which is why I suggested the OP look at the pellet barrels to start with. I'll be keeping my eyes open for similar barrel to the Hakim you have .

[rsterne]

TJ's .22 rimfire liners (5/16" or 3/8" OD) are as follows....

.22 LR.... .217/.222.....16"
.22 Short.... .218/.222.... 20"

his CF liners (3/8" or 1/2" OD) are....

.218/.222.... 16"  or 
.219/.224.... 14" (I have one on my Hayabusa)

and the airgun barrel Sean & I designed (which I used on my RDD) is....

.213/.217.... 16"
Jim Gaska's (MM) is smaller than that with slower twist....

Bob

[gabi.nechita]

Hi, Bob.
Thank you for your barrel listing but because I am from Europe I must stick with what I can find on LW barrel.de
site.

Kirby, thank you for helping me to made up my mind. It is to much trouble to find a barrel to shoot jsb and bullet accurately .
I think is no reason to use 33,9 jsb in long range shooting so I will buy a .224 centerfire barrel and I will cast bullet between 35 -45 grains. I will buy mold from Noe because my .308 bbt from him make very nice bullet.
Next big problem is to choose a twist . 12.6 or 14,2 ?

[K.O.]

Gabi there is one more barrel that I know has a tight bore and might work for both pellets and slugs and that is a CZ .22 barrel wish I knew more about their .22 mag barrels... I think the 22 lr  are about .212 bore at the muzzle...

Here in the states you can get one for about the same as the TJ liner...Maybe can get them over there... the 28" Ultra Lux here is 175$

https://shop.cz-usa.com/cz-products/rifles/455-barrel-sets

Scroll down in the faq section about half way and you will see they say  .211 for the bore....

http://cz-usa.com/support/faq/


another choice is a BSA .22 barrel   But I do not know what their specs are...

http://www.airgunspares.com/store/category/72/491/BSA/

http://www.airgunspares.com/store/product/16156/BSA-BSA-Buccaneer-.22-Rifle-Barrel-Part-No.-16-9383/

[skorec]

If I have understand right the .22 JSB  beast need not only  a little bit faster  1:16" twist rate but also a bit tighter/ deeper or taper or chocked  bore too .  CZ barrels should be the choice for EU customers .
I perhaps that for  .177  beast the same rules or also  a little bit faster twist rate 1:14” can be OK too  .
I am awaiting for 100yd grouping results from  .177-CZ barrel/ RTI Priest/JSB Beast/950 FPS 

[rsterne]

I would agree that the Beast pellets will need a faster twist rate than a shorter, lighter pellet.... However, I think than most airguns have twist rates that are much too fast.... so I would not be at all surprised if the Beasts would work in the slowest twist airgun barrel you can find.... I don't think anyone (except maybe Tom at AAA) have a good grasp on how slow a twist rate you can use for Diabolo (waisted) pellets.... If you really want an answer, I would suggest you PM QVTom and ask him how the 34 gr. Beasts work in his 19" twist .22 cal barrel on the EVOL.... I don't think you will find anything slower than that.... except maybe the effective twist rate for the FX Smooth Twist barrels.... I have seen downrange measurement of the rotation rate of pellets from those that indicate the effective twist rate to be a slow as 1 turn in 13 FEET....

Bob

[gabi.nechita]

I just received today my .22 hornet barrel from LW.
If my machinist will have time for me , i will try to fit this barrel on my BT65 and I will try to make an comparasion between this two barrel.