Anyone shot the .457 Max with AEA ammo? Did you have to tune it?
What speed would a .45 cal slug want to fly?
Thanks -Nate @ Airgun Channel
Tuning Tuning Tips for the AEA MAX .457?
- Thread starter kaylaindy
- Start date
Anyone shot the .457 Max with AEA ammo? Did you have to tune it?
What speed would a .45 cal slug want to fly?
Thanks -Nate @ Airgun Channel
There hasn't been a lot of "tuning" with them. Most guys test a bunch of different lengths of hollow point slugs to get the tightest groups size. Optimal slug speed and accuracy generally will depend on the twist rate. Speed, stability, and twist rates can be calculated on the websites of several bullet manufacturers such as Berger. Search "twist rate calculator" to get a calculator you like, as there are different types to get you to the answer that you are looking for (speed versus length versus twist, ect).
On another note of interest... If you are bring us this question because that barrel doesn't seem that accurate from your initial shooting experience, it might be best to push a slug through by hand/cleaning rod to check fitment. It has been well documented that there are a lot of the AEA .457 big bore barrels that are over bored and need a slightly larger diameter slug to make them accurate if utilizing the magazine. Some of those folks shooting them have just gone to a long hollow point slug and single load them to gain accuracy and compensate for the larger bored barrel. This is a shame that a magazine fed product has to be single loaded in such a way. May as well have purchased a tried and true single shot Airforce Texan at that point.
On another note of interest... If you are bring us this question because that barrel doesn't seem that accurate from your initial shooting experience, it might be best to push a slug through by hand/cleaning rod to check fitment. It has been well documented that there are a lot of the AEA .457 big bore barrels that are over bored and need a slightly larger diameter slug to make them accurate if utilizing the magazine. Some of those folks shooting them have just gone to a long hollow point slug and single load them to gain accuracy and compensate for the larger bored barrel. This is a shame that a magazine fed product has to be single loaded in such a way. May as well have purchased a tried and true single shot Airforce Texan at that point.
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I guess there is no tuning...it's not adjustable. It's shooting the AEA slugs in dime groups at 50 yards. Around 700 Feet per Second
3 shots at 46 yards
3 shots at 46 yards
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M
Marco25
Guest
Hi Nate
looks like it’s shooting very good out of the box. Nice group at 50y. What size do the AEA slugs measure I would be interested.
Marco
looks like it’s shooting very good out of the box. Nice group at 50y. What size do the AEA slugs measure I would be interested.
Marco
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Marco,
It looks like 11.6mm, like the magazine said on it. They also call it .457. They are about 17.5 mm tall. -Nate
It looks like 11.6mm, like the magazine said on it. They also call it .457. They are about 17.5 mm tall. -Nate
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May be hard to find. There are no slugs available for the .58 ZEUS yet, unless you buy from https://krs-sc.com/
or Mr. Hollowpoint
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Alco Bullets has some 457, but never used any of their products. https://www.alcobullets.com/shop/air-gun-big-bore-50-caliber-510-pellets/precision-45-caliber-457-big-bore-airgun-pellets/
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@kaylaindy I found them. I just didn’t know about them until your post. The fragmentation in your photo caught my attention. Did you fire yours into a steel plate? If not, what sort of backstop did you have behind your target?
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I guess there is no tuning...it's not adjustable. It's shooting the AEA slugs in dime groups at 50 yards. Around 700 Feet per Second
3 shots at 46 yards
There are adjustments you can make to the hammer spring - it took me a bit of messing around to get high power without a lot of hammer bounce and wasted air. I don’t know if my gun was a fluke but some adjustments to the spring made a huge difference in the noise level and air usage while maintaining power.
Clip spring, or back off spring retainer to lower power a bit or add “power washers” to increase spring preload, or switch to a short stiff spring to get more efficiency if hammer bounce is an issue for you
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Shot strings comparing two different hammer springs. The weaker spring would work for a 3000 psi fill if I ever had to hand pump and wanted to shoot at 110 fpe or so.
These springs are shorter than the stock spring, actually two springs threaded together.
These springs are shorter than the stock spring, actually two springs threaded together.
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Hi Nate. There are always improvements that can be made. As previously mentioned, washers behind the hammer spring will increase power. You can also decrease the valve spring tension if you dont want a even harder cocking effort. Im in the process of polishing all of the parts related to the airflow, which will definitely help the speed and power. Polishing the internal spaces that have air flowing through will also help. Then there are a couple spots where adding a piece will help direct the airflow.
. With many of these aea guns, the most power is usually gained from porting the barrel and setting it correctly. The barrel can also be polished but i have not tried it yet with the max45 and have concerns about the bore size and change.
Additionally, the projectile you use is extremely important as far as power, accuracy, and distance go. You want a tight fit that wont fall out or get stuck. You can add a little bit of non flammable lube to the rounds as well.
Im sure ive forgotten some things but this should keep you busy awhile. Also, i recommend the ProSlugs 175 gn Fury slugs. They are awesome.
Good luck.
. With many of these aea guns, the most power is usually gained from porting the barrel and setting it correctly. The barrel can also be polished but i have not tried it yet with the max45 and have concerns about the bore size and change.
Additionally, the projectile you use is extremely important as far as power, accuracy, and distance go. You want a tight fit that wont fall out or get stuck. You can add a little bit of non flammable lube to the rounds as well.
Im sure ive forgotten some things but this should keep you busy awhile. Also, i recommend the ProSlugs 175 gn Fury slugs. They are awesome.
Good luck.
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Can the hp max 457 have dual tanks like the s45?
Can a 700cc tank be attached instead of factory tank?
Is the barrel of the max 45 interchangeable with the thinner s45?
And finally will .454 round ball roll out of the max?
Hope someone can enlighten me,
Thanks.
Can a 700cc tank be attached instead of factory tank?
Is the barrel of the max 45 interchangeable with the thinner s45?
And finally will .454 round ball roll out of the max?
Hope someone can enlighten me,
Thanks.
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So the 357 cannot have a 700cc tank?
And .354 round ball roll out?
Seems my best bet is the s45 for dual tanks and I think it will run the .454 RB's, plus the s45 has that thinner barrel..
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.360 round ball are too large and required a mallet to load. Never tried the smaller kind…
To fit a 700 cc bottle would depend on the diameter of the bottle since if it is much thicker than the stock tube the shroud will be in the way. i don’t recall the diameter of that tube, but it was smaller than CF bottles and i think there is only a mm of space between it and the shroud.
To fit a 700 cc bottle would depend on the diameter of the bottle since if it is much thicker than the stock tube the shroud will be in the way. i don’t recall the diameter of that tube, but it was smaller than CF bottles and i think there is only a mm of space between it and the shroud.
Gotcha. As I'm sure you have deduced I am somewhat new to pcp projectile devices..but always looking to learn more and with some tinkering may be able discover some things through hands on experience.
And thank you for sharing your knowledge to this new guy.
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The shroud is easy to remove and you could just have the barrel floating there.
Also, there are angled / drop down bottle adapters that would allow you to lower the bottle without removing the shroud.
Happy to help. Spent some time with a .357 max but ended up returning it in the end due to leaks and other issues
Also, there are angled / drop down bottle adapters that would allow you to lower the bottle without removing the shroud.
Happy to help. Spent some time with a .357 max but ended up returning it in the end due to leaks and other issues
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