0.216, 0.217, 0.218?

[johnwoitalla]

Are any of you finding a significant difference in accuracy and/or velocity with the differing sizes of the same weight slugs? And do any of the pellets come in these variationsI Considering the price of slugs, it can become costly to do a comparison. With respect to hunting, what size groups and at what distance(s) are you looking for?

 

[6gun]

Are any of you finding a significant difference in accuracy and/or velocity with the differing sizes of the same weight slugs? And do any of the pellets come in these variationsI Considering the price of slugs, it can become costly to do a comparison. With respect to hunting, what size groups and at what distance(s) are you looking for?

Target grade groups for me for hunting. 1st shot must be dead on or why bother, I'm not shooting sighters or dumping plenum pressure to get an animal. My gun didn't like anything but 217,my needs are 50-150 yards for most hunting. It's really just sniping.

The slug gun doesn't work too awesome for my needs because many situations I can't be shooting high bc ammo at near-rimfire power settings.... So like fishing reels, I have a collection for each need now. 74 fpe 22 impact on 217 slugs, 43 fpe 25 dreamline compact on pellets , 20 fpe aea hpss 22 on pellets, and a 15 fpe 177 Benji disco on pellets. I'm waiting for parts to build a 2240 based pcp around 15 fpe in 22 for a compact layout to compliment the disco for ground squirrel services where my antique 7 fpe pistol is not appropriate

 

[Joes41]

Are any of you finding a significant difference in accuracy and/or velocity with the differing sizes of the same weight slugs? And do any of the pellets come in these variationsI Considering the price of slugs, it can become costly to do a comparison. With respect to hunting, what size groups and at what distance(s) are you looking for?

The only pellet I know of that comes in different head sizes are the H&N field target trophy. I think 5.51 to 5.56.

 

[6gun]

The only pellet I know of that comes in different head sizes are the H&N field target trophy. I think 5.51 to 5.56.

Iirc the jsb "exact" line come in different sizes, you just have to pay close attn to the ads.

 

[SciueraPlumbea]

Are any of you finding a significant difference in accuracy and/or velocity with the differing sizes of the same weight slugs? And do any of the pellets come in these variationsI Considering the price of slugs, it can become costly to do a comparison. With respect to hunting, what size groups and at what distance(s) are you looking for?

It’s barrel specific and rifling specific. Twist gives you a weight range.
Personally with .22 fx liners superior and stx slug specifically my best results were with .218 slugs. Shooting Crown 380 and 700, maverick 600, and drs 700

With the Cz 1 in 17.7 216 25.39 mk 2 knockouts, 216 nsa 20.2, 216 27.5nsa, .217 ko 28.55, .217 hp2 25, .217 javelin 21-23-26. The 216 mk2 25.39, NSA 20.2 and 216 knockout 20.83 shoot so incredibly accurate out of the uragan I’ve stopped experimenting. They’re too good to pass on. Sub moa at 100. I can pull a minute to 1.5 with some of the .217slugs. But .216 is preferred. Of the 218 I’ve tried, knockout, javelins, HP1 and 2, griffin hollow base and LDC. 17-24 they shot like garbage.

In Zelos, and the SPAs, .217 only Hybrids have worked very well, javelin and hp slugs between 21 and 25 are great

For .25 I’ve only had 2 guns. .2503-2513 have worked very well. .249 flew like hot garbage.

.1771, .1775, .178. Have all shot well in the Katran and at44. The other 177s have been extremely picky.

Pressure, velocity, and dwell can change the game. Finding a decent slug is simple. Finding A great Slug isn’t. Talking to people who shoot the same gun or have the same barrel as you and communicating your findings is crucial. Has helped me immensely. And we can pass findings to everyone else.

 

[6gun]

It’s barrel specific and rifling specific. Twist gives you a weight range.
Personally with .22 fx liners super and stx slug specifically my best results were with .218 slugs crow, maverick, and drs.

With the Cz 1 in 17.7 216 25.39 mk 2 knockouts, 216 nsa 20.2, 216 27.5nsa, .217 ko 28.55, .217 hp2 25, .217 javelin 21-23-26. The 216 mk2 25.39, NSA 20.2 and 216 knockout 20.83 shoot so incredibly accurate out of the uragan I’ve stopped experimenting. They’re too good to pass on. Sub moa at 100. I can pull a minute to 1.5 with some of the .217slugs. But .216 is preferred. Of the 218 I’ve tried, knockout, javelins, HP1 and 2, griffin hollow base and LDC. 17-24 they shot like garbage.

In Zelos, and the SPAs, .217 only Hybrids have worked very well, javelin and hp slugs between 21 and 25 are great

For .25 I’ve only had 2 guns. .2503-2513 have worked very well. .249 flew like hot garbage.

.1771, .1775, .178. Have all shot well in the Katran and at44. The other 177s have been extremely picky.

Pressure, velocity, and dwell can change the game. Finding a decent slug is simple. Finding A great Slug isn’t. Talking to people who shoot the same gun or have the same barrel as you and communicating your findings is crucial. Has helped me immensely. And we can pass findings to everyone else.

I was going down the road you just did, except I learned it's a springer. I can't speak to slugs in springers because I haven't done it.

 

[SciueraPlumbea]

I was going down the road you just did, except I learned it's a springer. I can't speak to slugs in springers because I haven't done it.

I did try with some, a Diana under lever and an old crosman break barrel springers. Both were .177 and slugs were difficult to set. I shot 2 or 3 mark 3 kos from both and it just was not happening. Both sjot about exactly 12 ft lbs. they were a former coworkers fathers. He asked if l I could figure out why they didn’t shoot well. Both had badly fouled bores, including some surface rust inside the crosman Bore. When I got them cleaned and polished they both shot half inch groups at 25 with baracuda match 4.51 10.65gr. The crosman at 712fps the Diana at 707.

 

[sonnysan]

Do yourself a favor and slug your barrel. You will be in the top 1% of airgunners, and save yourself a boatload of money all along the way.

 

[Kgphotos]

Are any of you finding a significant difference in accuracy and/or velocity with the differing sizes of the same weight slugs? And do any of the pellets come in these variationsI Considering the price of slugs, it can become costly to do a comparison. With respect to hunting, what size groups and at what distance(s) are you looking for?

My Impact MK2 and My Crown MK2 both in .22 love the .218 NSA 24.8 grain slugs. They didn't perform as well with the .217. Now with my Panthera it is different. It shoots "lights out" with the H&N 30 grain slug but it much prefers the .217 version over the .218. You either have to experiment or try slugging your liner. Though even if you slug your liner you probably should still experiment with slug diameters.
Aren't you in the Central Valley? South Valley? Do you ever make it to Fresno/Clovis? I can see how much of the .218 H&N slugs I have left if you'd like to play with them. Not sure what I have but I can look and see.
Kenny

 

[johnwoitalla]

My Impact MK2 and My Crown MK2 both in .22 love the .218 NSA 24.8 grain slugs. They didn't perform as well with the .217. Now with my Panthera it is different. It shoots "lights out" with the H&N 30 grain slug but it much prefers the .217 version over the .218. You either have to experiment or try slugging your liner. Though even if you slug your liner you probably should still experiment with slug diameters.
Aren't you in the Central Valley? South Valley? Do you ever make it to Fresno/Clovis? I can see how much of the .218 H&N slugs I have left if you'd like to play with them. Not sure what I have but I can look and see.
Kenny

I’m not familiar with “slugging” a liner…splain it to me and write real slow cause I don’t read very fast!

 

[Kgphotos]

I’m not familiar with “slugging” a liner…splain it to me and write real slow cause I don’t read very fast!

I've never actually done it. I'm more the "try different diameter slugs" type of experimenter. Here is a link to a thread from our forum discussing the method.

https://www.airgunnation.com/threads/how-to-slug-a-barrel.1303397/

 

[rangur1]

The diameter makes a difference especially with slugs. Depending on school of thought. You want either to match groove diameter or just big enough to engage the lands.
Slugging the barrel or liner means tapping an oversized slug. .223 for a 22 cal or say a .255 for a 25 cal. With a wood dowel so you don’t damage the barrel, use a good cushion to protect the crown. Tap it through the barrel. Measure the ridges gently with calipers. If barrel is unchoked, there you go, if barrel is choked, go .003 bigger than choke. That’s a good place to start. Pellets are less picky as the skirt flares out to accommodate barrel. Pellets generally have 2 different head sizes in every can. Especially JSB, pellet gage would sort that out, but is time consuming.

 

[dizzums]

for a pellet barrel thats choked typically it wont matter, they usually swage any pellet you put in it down to the same size .. for a straight through slug barrel i would slug it and probably try to use projectiles that are as close to groove diameter as possible withought getting tight .. that would be my initial plan .. experimenting may change what i use along the way though ..

 

[Tincho]

¿Alguno de ustedes encuentra una diferencia significativa en precisión o velocidad con los distintos tamaños de balas del mismo peso? ¿Hay alguna variante de los perdigones? Considerando el precio de las balas, compararlas puede resultar costoso. En cuanto a la caza, ¿qué tamaño de grupos ya qué distancia(s) de autobús?

¿Alguno de ustedes encuentra una diferencia significativa en precisión o velocidad con los distintos tamaños de balas del mismo peso? ¿Hay alguna variante de los perdigones? Considerando el precio de las balas, compararlas puede resultar costoso. En cuanto a la caza, ¿qué tamaño de grupos y a qué distancia(s) buscan?

En balas, si hay diferencia, la superficie de friccion es mayor, hay que probar cual van mejor, en pellets el 5,52 es el que mejor se adapta a la mayoria de los cañones

 

[Vetmx]

It’s barrel specific and rifling specific. Twist gives you a weight range.
Personally with .22 fx liners superior and stx slug specifically my best results were with .218 slugs. Shooting Crown 380 and 700, maverick 600, and drs 700

With the Cz 1 in 17.7 216 25.39 mk 2 knockouts, 216 nsa 20.2, 216 27.5nsa, .217 ko 28.55, .217 hp2 25, .217 javelin 21-23-26. The 216 mk2 25.39, NSA 20.2 and 216 knockout 20.83 shoot so incredibly accurate out of the uragan I’ve stopped experimenting. They’re too good to pass on. Sub moa at 100. I can pull a minute to 1.5 with some of the .217slugs. But .216 is preferred. Of the 218 I’ve tried, knockout, javelins, HP1 and 2, griffin hollow base and LDC. 17-24 they shot like garbage.

In Zelos, and the SPAs, .217 only Hybrids have worked very well, javelin and hp slugs between 21 and 25 are great

For .25 I’ve only had 2 guns. .2503-2513 have worked very well. .249 flew like hot garbage.

.1771, .1775, .178. Have all shot well in the Katran and at44. The other 177s have been extremely picky.

Pressure, velocity, and dwell can change the game. Finding a decent slug is simple. Finding A great Slug isn’t. Talking to people who shoot the same gun or have the same barrel as you and communicating your findings is crucial. Has helped me immensely. And we can pass findings to everyone else.

But here’s the interesting thing about slugs and communication. The winner in my Uragan is a .218 Javelin. Since I got into slug shooting in 2017, I don’t think I’ve ever found the same claimed results that someone else recommended. I imagine the devil in the details would help as much as a slug diameter and weight. And details are not just speed. It’s how a guy arrived at that speed.

The absolute king of all over the map and claims of greatness are FX guns. I have never seen such a wide berth of slug sizes being shot from one liner and guys swearing that size is the best. But also believe the devil in the details is partially responsible for this. One, is the complex barrel and how a guy has it set up. Tension, CF sleeve bonded or not, torque on all components. Two, is how hard are you smacking that slug. Meaning 110b to 140b a .217 is fine. 150b to 170b the barrel prefers a .218. So I think no matter how much info gets posted, guys are still going to be wasting money testing.

 

[SciueraPlumbea]

y

But here’s the interesting thing about slugs and communication. The winner in my Uragan is a .218 Javelin. Since I got into slug shooting in 2017, I don’t think I’ve ever found the same claimed results that someone else recommended. I imagine the devil in the details would help as much as a slug diameter and weight. And details are not just speed. It’s how a guy arrived at that speed.

The absolute king of all over the map and claims of greatness are FX guns. I have never seen such a wide berth of slug sizes being shot from one liner and guys swearing that size is the best. But also believe the devil in the details is partially responsible for this. One, is the complex barrel and how a guy has it set up. Tension, CF sleeve bonded or not, torque on all components. Two, is how hard are you smacking that slug. Meaning 110b to 140b a .217 is fine. 150b to 170b the barrel prefers a .218. So I think no matter how much info gets posted, guys are still going to be wasting money testing.

I mentioned that pressures, dwell times, velocity, rifling, individual barrels can change the game.

However I’ve been able to find parity of results with several people shooting identical barrel versions

It helps to know whether man shooting maverick a, with barrel a and liner a at pressure a with macro and micro setting a has the same results as other man shooting mav a, with barrel a, with liner a.etc gets similar results or not.

When actually sharing results all of these variables are a given, and thus listed.

For example. Me shooting Airmaks Katran L. Cz barrel 520mm, 17.7, unchoked with 10.03 knockout m3 at 900,915,920,930,950-970-990 produced the same group sizes as Another member with the same barrel in krait L. Then discovering we have near identical results with almost everything we’ve both run. Given the krait usually gets this with Done with 10-15b less.

I agree about fx barrels. Data almost pointless, even within the same serial production range. Which is valuable data itself.

with the uragan and airmaks cz barrels, very valuable data

I’m shooting the u”1” choked CZ 570mm 17.7twist.
.216 NSA 17.5-27.5 shot great at 105b, 120,125-130 and started tapering off at very high velocity.

.216 ko 20.83 and mk2 25.39 fantastic at all

Starting at 120-125-135 the .217 Javelin 21 through 26, .217 ko 28.55 and Hn hp 2 21-27 were fantastic. I decided to go back down to 125 and stay. So I can utilize my preferred 20.83ko and 21 javelin at 940fps.

I’ve got the Huma Xl plenum reg installed. And very little added hammer spring. I stopped turning when I got to 940 and had an extreme under 11 fps for 36 shots

I can run at this setting
JSB .216 ko mk2 25.39 at 880fps with superb accuracy. .217 28.55 at 832fps with very good results. JTS 25.39 pellets at 901 with fantastic results., and JSB monster lights at 950 with great results. And As stated before the J S B knockout 216 20.83 and javelin 21 .217 at 940-945

I’m thrilled with these settings for this gun.

 

[johnwoitalla]

But here’s the interesting thing about slugs and communication. The winner in my Uragan is a .218 Javelin. Since I got into slug shooting in 2017, I don’t think I’ve ever found the same claimed results that someone else recommended. I imagine the devil in the details would help as much as a slug diameter and weight. And details are not just speed. It’s how a guy arrived at that speed.

The absolute king of all over the map and claims of greatness are FX guns. I have never seen such a wide berth of slug sizes being shot from one liner and guys swearing that size is the best. But also believe the devil in the details is partially responsible for this. One, is the complex barrel and how a guy has it set up. Tension, CF sleeve bonded or not, torque on all components. Two, is how hard are you smacking that slug. Meaning 110b to 140b a .217 is fine. 150b to 170b the barrel prefers a .218. So I think no matter how much info gets posted, guys are still going to be wasting money testing.

Please explain what you mean by “wasting money testing?” My thinking is that the only way to know what ammo my gun likes is to feed it various brands, weights, and diameters of slugs and observe what flavor(s) it prefers? Additionally, I don’t know what you mean by “how hard you are smacking that slug?”

 

[SciueraPlumbea]

Please explain what you mean by “wasting money testing?” My thinking is that the only way to know what ammo my gun likes is to feed it various brands, weights, and diameters of slugs and observe what flavor(s) it prefers? Additionally, I don’t know what you mean by “how hard you are smacking that slug?”

He’s saying the pressure of air hitting the ass end of the slug. Pressure can make or break a slug. One that shoots fantastic at 100b might do actual corkscrews at 140b and vice versa.

 

[Vetmx]

Please explain what you mean by “wasting money testing?” My thinking is that the only way to know what ammo my gun likes is to feed it various brands, weights, and diameters of slugs and observe what flavor(s) it prefers? Additionally, I don’t know what you mean by “how hard you are smacking that slug?”

Wasting money while testing? That’s the whole point of this topic. Guys don’t want to buy $150 worth of slugs that will never work in their barrel. Testing can be fun. But days of printing shotgun patterns is not. Most guys would prefer to get some guidelines that keep them from accumulating 50lbs of unused slugs. But it still happens.

Where your reg is set determines how hard you’re busting that cork loose.

 

[johnwoitalla]

Wasting money while testing? That’s the whole point of this topic. Guys don’t want to buy $150 worth of slugs that will never work in their barrel. Testing can be fun. But days of printing shotgun patterns is not. Most guys would prefer to get some guidelines that keep them from accumulating 50lbs of unused slugs. But it still happens.

Where your reg is set determines how hard you’re busting that cork loose.

I am still shooting my 22cal FX King/600mm barrel with all of the settings exactly as they came out of the box. I plan to pretty much keep it there and test a variety of slugs. When I find one or more which work for me, then I might consider making changes. I realize there are about a bazillion variables and the diameter of the slugs is just one. That is why I asked because I am new to slugs(but not airgunning). I have a 30 ft/lb AA S410 that loves 16gr and 18gr JSB pellets. The AA has no adjustments, not even a safety. I bought the FX specifically to be slug gun and will continue to shoot the JSB's with the AA. But I also have a variety of pellets I accumulated over the years that I plan on trying through the FX...just for fun. I can predict from my past experiences that what will likely happen is once I find an overall good enough slug weight and diameter that my gun shoots, then I will buy a good supply of them and just focus on having fun punching holes in pestilent mammals and/or birds.