.222/223 is the best caliber for bullet shooters on a budget!

[rsterne]

I asked Jared to make that mould because it should work in the TJ's 14" twist 0.224" barrel.... and the 47 gr. weight (SD = 0.134) means decent velocities should be possible with 3000 psi in a 24-26" barrel.... I achieved 970 fps with the 45 gr. HP at 2800 psi tethered in a 29" with good efficiency (it maxed out at 1010 fps)….

Bob

[rkr]

I asked Jared to make that mould because it should work in the TJ's 14" twist 0.224" barrel.... and the 47 gr. weight (SD = 0.134) means decent velocities should be possible with 3000 psi in a 24-26" barrel.... I achieved 970 fps with the 45 gr. HP at 2800 psi tethered in a 29" with good efficiency (it maxed out at 1010 fps)….

Bob

24" barrel and 980 fps at slightly under 3000 psi. It's about the longest practical bullet unless we go for .172 caliber.

[rsterne]

Not so sure about that.... TJ's make a couple of faster twist rates in .224 cal.... I have a 9", and I believe they also make a 12".... Of course you need more pressure to take advantage of the longer, heavier bullets.... The exact same gun as above, running unregulated at 3800 psi, gets 960 fps with a 61 gr. bullet (125 FPE) at 1.24 FPE/CI (and maxes out at 1000 fps).... and can always be tethered at that pressure....

Bob

[rkr]

Not so sure about that.... TJ's make a couple of faster twist rates in .224 cal.... I have a 9", and I believe they also make a 12".... Of course you need more pressure to take advantage of the longer, heavier bullets.... The exact same gun as above, running unregulated at 3800 psi, gets 960 fps with a 61 gr. bullet (125 FPE) at 1.24 FPE/CI (and maxes out at 1000 fps).... and can always be tethered at that pressure....

Bob

By practical I meant something that's useful at sub 3000 psi. Although we have fancy rifles taking 4500 psi fills many are still limited by 3000 psi fill of most factory guns.

[rintafile]

By practical I meant something that's useful at sub 3000 psi. Although we have fancy rifles taking 4500 psi fills many are still limited by 3000 psi fill of most factory guns.

Yes we have....But not factory... It ain't fancy.  It is awesome 

[KnifeMaker]

Ric, I didn't answer your question. the barrel is a Brownells .223 barrel liner that mic's in at .2213. Twist is 1 in 20.  I wanted it for shorter bullets. I also have the same barrel in 1-16 for testing as well.


The .250 Raptor barrel is 1-22 twist.


Mike

[rkr]

By practical I meant something that's useful at sub 3000 psi. Although we have fancy rifles taking 4500 psi fills many are still limited by 3000 psi fill of most factory guns.

Yes we have....But not factory... It ain't fancy.  It is awesome 

It's awesome if you have a compressor. Otherwise you get a 300 bar from diveshop that ends up 270 bar as the bottle cools down. If your gun needs 250 bar fills you won't get many fills from that bottle and you'll be back in the diveshop for another 270 bar fill etc. Not so awesome IMO. That's why I prefer guns that work at 200 bar or less.

[rintafile]

By practical I meant something that's useful at sub 3000 psi. Although we have fancy rifles taking 4500 psi fills many are still limited by 3000 psi fill of most factory guns.

Yes we have....But not factory... It ain't fancy.  It is awesome 

It's awesome if you have a compressor. Otherwise you get a 300 bar from diveshop that ends up 270 bar as the bottle cools down. If your gun needs 250 bar fills you won't get many fills from that bottle and you'll be back in the diveshop for another 270 bar fill etc. Not so awesome IMO. That's why I prefer guns that work at 200 bar or less.

Yeah but when you participate in competitions there is always compressor and you get full bottle when leaving. And I mean full. You should know.

[UnderPressure]

Hi all!

I have been speculation a bit and I think that the .223 may be the easiest and cheapest option for someone who whant to get into bullet shooting!

So here are a list of advantages!

1. There are plenty of cheap .22lr liners in lenghts up to 28" for some tens$

2. The twist rate is commonly 1-16 which is good for bullets in 30-40gr range.

3. The grove dia is commonly .223 (some are .222) and there are cheap ammo available and some bullets molds exist too and sizing bigger .224 bullets should not be a problem if needed.
(Link 250 bullets for 8$ https://northamericanarms.com/shop/parts/cbb3/)

How about JSB .22 pellets with a head diameter of 5.52mm (.2173") through a .22 LR liner?

https://www.pyramydair.com/blog/2005/12/pellet-head-sizes/

What does a pellet head do?
A diabolo pellet only touches the bore in two spots – at the head and again at the tail. The tail is sized much larger than bore size to seal the compressed air or gas behind the pellet. But, the nose doesn’t seal anything. It acts as a guide for the pellet. It can either ride the bore, which is the top of the rifling lands, or it can ride the grooves, themselves. If a pellet is marked by rifling on the nose when run through the barrel with a rod, it is riding the grooves, which is the most common way.

Lothar Walther lists a land (bore) diameter of .217" along with a .222" groove diameter for their .22 LR barrels which would make the JSB pellet (head diameter .2173"/5.52mm) bore riding for the nose.

[UnderPressure]

I just noticed Lothar Walther lists the finished .22 LR barrels with a different bore and groove diameter (.217" bore with .222" groove, which is indeed the SAAMI spec)......

https://www.lothar-walther.com/drop-in-gun-barrels/ruger-precision-rimfire-barrels/1433/ruger-precision-rimfire-stainless.22l.r.-mud-1/2-28-unef-2a-l-20.50?c=502

compared to the .22 LR blanks are listed at .216 bore and .221 groove.....

https://www.lothar-walther.com/gun-barrel-blanks/rifle-barrels/rimfire/cylindrical/316/barrel-blank-stainless-twist-16.4.22l.r.-od.91-l-26.18?c=34

Maybe the blanks are tighter because they are match barrels?

In any event the official SAAMI spec for .22 LR is .217" bore (lands) with .222" groove.

[UnderPressure]

I think these slugs would be interesting with the 1-16" .223 barrel liner:

https://www.mp-molds.com/product/552-mm-air-rifle-pellet-8-cav-mold/

(re: I have read this (and the mold sized .03mm larger) have a .223 rear drive band. They were designed by Gregor Kamensek for use in the Huben K1 .22)

[KnifeMaker]

I have this mold in .250 and it is a laser. However, I wonder about the size. 5.52 is .217 in dia. Not .223.


My barrel is dead on .223. GRRRR!


Knife

[UnderPressure]

I have this mold in .250 and it is a laser. However, I wonder about the size. 5.52 is .217 in dia. Not .223.


My barrel is dead on .223. GRRRR!


Knife

Here is where I got the info on the rear drive band:

https://www.newenglandairgun.com/huben.html

.22 @ 35 gr x (10.66) long x  .217 (5.52) body .223 (5.67) dia seal.
.22 @ 35 gr x (10.66) long x  .218 (5.55) body .223 (5.67) dia seal.
.25 @ 47 gr x (10.86) long x  .250 (6.35) body .253 (6.45) dia seal.

Does your MP mold drop the .25 cal version with a .253 rear drive band?

[rintafile]

Gregor use quite hard alloy... on YouTube he has some casting video's. I think he drops some Linotype in . I can't say if those molds are designed based on Gregor's alloy.  I have both that Huben mold and .25 mold. Haven't casted that .25 yet and can't remember which diameter that Huben mold drops. I use Pb and 2 % Sn alloy. But there was on MP's  web shop sizing die on Huben which is .222,8 and that is based on Gregor's tests on version I Huben .... Those video's are probably also on Gregor's YouTube channel

[UnderPressure]

Gregor use quite hard alloy... on YouTube he has some casting video's. I think he drops some Linotype in . I can't say if those molds are designed based on Gregor's alloy.  I have both that Huben mold and .25 mold. Haven't casted that .25 yet and can't remember which diameter that Huben mold drops. I use Pb and 2 % Sn alloy. But there was on MP's  web shop sizing die on Huben which is .222,8 and that is based on Gregor's tests on version I Huben .... Those video's are probably also on Gregor's YouTube channel

At 11:09 in the following video Gregor does mention the rear ring needing more force to push in compared to the front ring--->

[UnderPressure]

First time I have seen a mould for CB (conical ball) .22 rimfire ammo....

Does this qualify:

https://noebulletmolds.com/site/shop/224/223-38-rn-cc1/223-38-rn-cc1-3-cavity-hb



P.S. This is the heaviest (as cast) bullet I can find so far in .223. Surprisingly it is also .489" in length due to the ogive raidius.

EDIT: Looks very similar to the .22LR reloader bullet (38 grain) Scotchmo mentioned he uses ---> https://www.gatewaytoairguns.org/GTA/index.php?topic=159220.msg155901013#msg155901013

http://22lrreloader.com/design-details/

[K.O.]

no the NOE round is not a conical ball round... here in America it is called a CB cap and in the E.U. it used to be called 6mm Flobert after the inventor iirc... it has it's own case shorter than .22 short... If it is a round nose it is called a BB cap...

https://www.google.com/search?q=.22+cb+caps&rlz=1C1GNAM_enUS688US688&source=lnms&tbm=isch&sa=X&ved=2ahUKEwijqeOrqK_qAhWKq54KHXWjD34Q_AUoAnoECBcQBA&biw=1088&bih=474

[K.O.]

Also the CB/BB caps were originally meant for  smooth bore but  work in 1:20-1:24 twist .22 short barrels best...

[rkr]

For .22lr bullets https://www.krale.shop/en/airgun-pellets-rws-5-7-mm-41-4-grain/ and https://www.opticsplanet.com/lyman-rifle-bullet-mould-22-caliber-225438-2660438.html

[Hobbyman2007]

For .22lr bullets https://www.krale.shop/en/airgun-pellets-rws-5-7-mm-41-4-grain/ and https://www.opticsplanet.com/lyman-rifle-bullet-mould-22-caliber-225438-2660438.html

I have a few thousand of them that I had purchased for the Evanix K550. They do shoot very well. I size them down to .2214” . I do prefer the cast 225-39 sized to the same.
If I could get a used for a good price , Winchester 70-35 I would convert it to .224 cal . The 257 conversion I already have is awesome , can’t believe there aren’t more of these out there converted to smaller calibers. Wait I know what it is .............. the ugliest stock ever made.