DISCOVERY WITH 2250 SPRING AND MAC 1 GUIDE

[melloroadman]

CPH 10.5 , .177 pellets , 1700 fill , home made power adjuster with Mac 1 spring guide , 2250 spring , adjuster turned in 4 turns . Two 25 shot strings and one 10 shot string ,total of 60 shots ,  one fill .
String 1 - 720 , 729 , error , 743 , 747 , 746 , 755 , 751 , 751 , 757 , 758 , 756 , 762 , 760 , 767 , 761 , 772 , 775 , 769 , 773 , 771 , 779 , 772 , 780 , 782 , average 760 fps .
String 2 - 774 , 780 , 777 , 778 , 780 , 769 , 782 , 778 , 781 , 785 , 783 , 777 , 779 , 785 , 778 , 777 , 779 , 776 , 774 , 774 , 773 , 767 , 764 , 762 , 761 , average 776 fps .
String 3 - 753 , 751 , 752 , 744 , 743 , 738 , 734 , 728 , 723 , 716 , average 738 fps.
Average of first 50 shots 768 fps .Average of all 60 shots 763 fps . Deviation less than 10 percent . Noise level drastically reduced . Shot count higher , with a loss of fps. Be low are the numbers I ran on the Discovery with the stock spring , same pellets and fill psi .One 20 shot string .
String 1 - 868 , 872 , 871 , 877 , 869 , 865 , 864 , 873 , 869 , 868 , 869 , 860 , 859 , 858 , 854 , 853 , 847 , 844 , 839 , 836 , average 861 fps. deviation less than 10 percent .Marvin

[eltigrillo]

Excuse, you could show some photos of power to adjuster, I I wanted to do one for my Disco.

[melloroadman]

This should help . But the spring guide was not long enough and it would bend the spring after usage . Since I do not have a lathe I bought a spring guide from Mountain air  for $5.00 . I will give you his link as well I made a mistake when I said it was Mac 1. Its the 22xx and 13xx guide  Marvin
http://www.gatewaytoairguns.com/airguns/forums/thread-view.asp?tid=9628&mid=71486#M71486
http://www.mountainaircustomairguns.com/New_accessories_page.htm