Impact X Tuning Questions

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Just saw the topic

https://www.airgunnation.com/topic/impact-shooting-slugs/

Ahh but it was a 26gn slug no 28gn, 700mm barrel (not available), and that spacer, now it make more sense ... that spacer should be very easy to make
Click to expand...

I've been toying with just replacing the pur 90 oring (acting as the hammer bump) with a thicker one. Wonder if that would accomplish the same thing? I have to replace it anyway because it split. Like now there are 2 "donuts" and I lost about 160 fps on the same tune.
 
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I had a chat with Ernest on the phone, I took a lot of notes that I have to sort through - but the takeaways that I got were that my stock Impact is in fact maxed out right now (it's doing what it is supposed to do with everything being stock), and there's a list of custom modifications needed to truly max it out (including part fabrication).

I'd need to figure out a plan for a multi-staged approach for modifying it for more power. I don't see being able to get from A to Z in one shot, so I'll have to noodle what I learned and figure something out!
 
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Just saw the topic

https://www.airgunnation.com/topic/impact-shooting-slugs/

Ahh but it was a 26gn slug no 28gn, 700mm barrel (not available), and that spacer, now it make more sense ... that spacer should be very easy to make
Click to expand...

I've been toying with just replacing the pur 90 oring (acting as the hammer bump) with a thicker one. Wonder if that would accomplish the same thing? I have to replace it anyway because it split. Like now there are 2 "donuts" and I lost about 160 fps on the same tune.
Click to expand...

I talk with Ernest that a while a go and his recommendation was not to do it (bigger) exactly because of what you are experiencing, you will lost fps. If you have not access to PUR90, you can use nylon washer, works too (you can do thinner but no bigger), and you can buy easy in aliexpress PUR 90 orings for bumpers very cheap https://www.aliexpress.com/item/PCP-HP-Fill-Station-Push-Valve-O-Rings-2-8-1-8-Polyurethane-90-Rigidity-10pcs/32817006182.html?spm=a2g0s.9042311.0.0.2f5e4c4dsWR2lD 

In USA was hard to find by google it..jaja maybe now is easier? (meaning I could not find anything in USA like 5 months ago, but probably on ebay you will find them)
 
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