AEA Hp Max

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Don’t know if you guys are aware of this, but it looks like a cool little upgrade for the HP Max’s 👍

gogun.co

Pump Action Kit for HP Max .35 Cal

During the (ongoing) development of our Six Bow product, our customers asked us to develop the pump action kit separately. We answered the call! This retrofit kit can be added to any existing HP max .35 cal out in the field. Take a look at the included product video. This kit will allow you to...
gogun.co gogun.co
 
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Flyingsherpa said:
What is your barrel length?
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Flyingsherpa said:
Just got my first pcp, an AEA Hp Max 457. I'm really liking it. As far as fpe and accuracy goes. If there anyone out there has had both? Which did you prefer, why?
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I have the Hp Max 457 (M50/M457) with the 5" barrel and small air tank (pistol). Have considered the long barrel conversion, but maybe I'll just pick up another one used off the marketplace some time. Great trigger on this thing. I've only shot it about 15 yards but it's hole in hole accuracy with a holo sight. I'm shooting 140-150 grain ammo due to the short barrel. Gets about 130-140 fpe on the 1st shot but surprisingly will run 2 magazines at what I would consider "effective" power levels.

Too bad AEA didn't engineer their valve seats and pins to be indestructible, this would be a near-perfect platform. I've replaced the pin on an HP SS before and it's a 10 minute job, no biggie. Keep a spare just in case or get one of the reinforced ones sold on Ebay.

I am a little surprised AEA hasn't issued a "recall" on those parts like they did with the HP SS magazines at one point (send them in, we send you back fixed/new ones). Even more surprising they're still using the same parts (as far as I know) in the newer models based on the HP Max platform.
 
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I have been seeing which slugs deliver the most energy. Everything was fired in 6 shot groups. Starting at 4500psi. With the last shot being fired at around 3200psi. All of the slugs were shot with a moderator.
Aea 196gr Hollow Point
1. 790 fps 271.96 fpe
2. 775 fps 261.47 fpe
3. 758 fps 250.12 fpe
4. 703 fps 215.14 fpe
5. 671 fps 196.0 fpe
6. 674 fps 197.76 fpe
Extreme Airgun Ammo Durbins 242gr
1. 727 fps 284.08 fpe
2. 720 fps 278.64 fpe
3. 708 fps 269.42 fpe
4. 673 fps 243.45 fpe
5. 635 fps 216.73 fpe
6. 600 fps 193.5. fpe
Griffen Dish Base 200gr Hollow Point
1. 792fps 278.64 fpe
2. Error
3. 756 fps 253.88 fpe
4. Error
5. 696 fps 215.18 fpe
6. Error. I will re-shoot this group later
200gr Hollow Base Hollow Point
1. 676 fps 202.99 fpe
2. 771 fps 264.06 fpe
3. 762 fps 257.93 fpe
4. 735 fps 239.97 fpe
5. 664 fps 195.85 fpe
6. 667 fps 197.62 fpe
220gr Dish Base
1. 756 fps 279.27 fpe
2. 739 fps 266.85 fpe
3. 720 fps 253.3. fpe
4. 692 fps 233.99 fpe
5. 642 fps 201.39 fpe
6. 640 fps 200.14 fpe
250gr Dish Base Hollow Point
1. 708 fps 278.33 fpe
2. 749 fps 311.5 fpe
3. 690 fps 264.36 fpe
4. 668 fps 247.77 fpe
5. 632 fps 221.78 fpe
6. 594 fps 195.92 fpe
 
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Malsonb I see you have the 700 cc bottle on yours. Did you lose any power due to restricted airway in the adapter? I'm thinking about converting mine as well. Flyingsherpa perhaps you might be interested in getting the longer barrel kit from Bintac along with a larger air tube. I had mine out after the conversion and it seemed to be shooting all the lighter stuff I have very hot. I ended up sighting it in with 246 gr lucky seven max velocity slugs just to get on paper.
 
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bearair said:
Malsonb I see you have the 700 cc bottle on yours. Did you lose any power due to restricted airway in the adapter? I'm thinking about converting mine as well. Flyingsherpa perhaps you might be interested in getting the longer barrel kit from Bintac along with a larger air tube. I had mine out after the conversion and it seemed to be shooting all the lighter stuff I have very hot. I ended up sighting it in with 246 gr lucky seven max velocity slugs just to get on paper.
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I have been thinking about going the longer barrel route, but not till I have the 13inch totally dialed in.
 
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I ran the numbers again for the Griffen 200gr Hollow Base Hollow Points. Under the same conditions.
200gr
1. 792 fps 278.64 fpe
2. 778 fps 268.87 fps
3. 754 fps 252.54 fpe
4. 733 fps 238.67 fpe
5. 680 fps 205.4. fpe
6. 659 fps 192.91 fpe
On a few occasions I had a stronger second shot that the first, and on one shot. The second to the last came out higher. Other than that presure drops and very consistent.
 
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bearair said:
Malsonb I see you have the 700 cc bottle on yours. Did you lose any power due to restricted airway in the adapter? I'm thinking about converting mine as well. Flyingsherpa perhaps you might be interested in getting the longer barrel kit from Bintac along with a larger air tube. I had mine out after the conversion and it seemed to be shooting all the lighter stuff I have very hot. I ended up sighting it in with 246 gr lucky seven max velocity slugs just to get on paper.
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I haven't shot my .457 barrel over chrony yet. My .510 barrel was shooting 400 plus with cf bottle and original tank. Fpe was about the same. For my gun it did not restrict any air flow. We currently have a foot of snow and hope to do some testing when the wheather clears.
 
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Malsonb said:
All my fills when testing .510 barrel were around 4300 psi.
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I usually top off. I'm still learning my shot curve. Plus I tend to be more concerned with the pressure not getting too low. Bin at the pellet shop advised me to not go below 3200psi. He said the valve pin will last forever. If I don't let the pressure get too low.
 
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