.177 Talon w/ CO2 valve & home made hammer weight 18&quo
I installed the valve from a CO2 adapter & added a hammer weight made out of a bronze bushing from Ace Hardware. I don’t know the weight of it but it is 1/8″ thick. I also replaced the valve spring with a stiffer one from ace as well. Top hat set to .093, 18″ barrel.
1st shot string:
PW- 10-12, 2500 PSI fill, Kodiak 10.6g(unsorted)
1136 1133 1132 1132 1122 1123 1114 1115 1103 1109 1108 1101 1096 1094 1089 1084 1074 1079 1070 1066 1061 1056 1053 1052 1052 1042
1043 1045 1034 1035 1023 1019 1018 1006 1004 999 994 984 989 980 971 966 961 954 951 945 943 938 932 927 922 918 918 916 918 915 915
910 909 915 910 912 904 899 897 897 887 888 880 877 872 874 869 863
860 852 854 844
78 shots
end PSI-1100
Kodiak 10.6g(unsorted), 2100 fill PW 5-14
803 804 809 811 815 831 833 812 812 816 825 824 825 828 847 850 845 863 891 885 886 897 897 899 910 909 926 923 933 935 936 958 962 967 977 978 972 975 963 978 976 974 965 975 965 973 964 968 957 964 960
953 955 954 952 934 938 930 925 917 916 910 900 897 890 884 873 869
875 861 854 846
72 shots
end PSI – 1100
My goal is to start near 885 up to 950 & back down to 885 w/ 10.6g Kodiaks. Then 16g Eun Jin’s. Which direction should I go from here? Increase PW setting @ 2100 PSI or higher fill & higher PW?
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My last shot string from previous post has the wrong power setting. It should have been 1-14. Today I lowered the fill to 2000 & got these:
CPH 10.5g – 2000 psi fill, PW 4
923 928 931 933 945 957 955 982 988 978 991 993 1006 1026 1006 1005 1005 1001 1002 1000 997 995 988 991 990 984 986 975 970 969 968 965 954 951 947 940 936 935 931 918 925 923 918 913 908 898 892 896 892 890
50 shots – HI 1026, low 890
CPH 10.5g – 2000 psi fill PW 2-8
894 901 919 926 929 912 841 874 933 931 930 947 958 954 945 963 955 969 954 963 981 975 970 969 972 977 982 968 968 979 973 958 967 958 957 961 953 957 947 942 937 939 931 928 931 928 931 918 911 902 902 893
50 shots – HI 982, LOW 893
Should I try & lower the top hat a little to try & get more consistent shots or is this pretty good? The erratic #’s are from using unsorted pellets.
Thanks, that’s what I was thinking. I plan to get it dialed in for 10.5 g pellets then just increase the PW for the 15g & 16g pellets. I have a box of 21g Piledrivers but are a pile without a probe to properly load them.
Aloha
Thanks
Thanks Mac, What I meant in the last part was after I get the starting fps @ 915 what do I do if the top of the curve goes above 965? Do I then lower fill pressure & repeat pw adjustments?
Thanks
Oh yea..Gotcha…Yes, you would have to lower the fill pressure. If
you lower the fill psi then you might need to increase the PW some
also or you could start shooting heavier pellets….Heavier pellets
might really make that thing a long range laser….You are searching
for the elusive “Sweet Spot”…It takes time and every gun is different..
There is no one setting for all guns and when you start tinkering and
changing valves then you are treading into unexplored avenues that
take a little more time and effort to conquer…Keep at it, you’ll get it
if you don’t give up….
Thanks
Thanks Mac, What I meant in the last part was after I get the starting fps @ 915 what do I do if the top of the curve goes above 965? Do I then lower fill pressure & repeat pw adjustments?
Thanks
Thanks
If setting the PW on 4 still gives you a higher FPS than you want,
try setting it on 0 and go from there….You should be able to shoot
at least 10 shots before you refill but, your understanding of needing
to refill after a few shots is correct….If the FPS is too low with PW
0-4 then you could increase fill psi 100psi at a time until you get
the results you’re looking for…
I assume you mean for the 2500 PSI fill. Should I lower PW, shoot 3 or 4 then top it off back to 2500 each time until I get to the # I’m looking for? If I the FPS go above my target do I then lower PSI & repeat PW adjustments?
Thanks
Keep the same fill pressure and lower the PW to 4….Start shooting
and increase the PW until you get the starting FPS you are looking
for (2 or 3 shots at a time)…Reduce the PW if your starting FPS is still too high…
For the 2500 PSI fill or the 2100 PSI fill?
lower it & use what PSI? Or lower w/ more PW @ same PSI?
Thanks
turn the power wheel down first…
I’d try lowering the top hat alittle.
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894 901 919 926 929 912 841 874 933 931 930 947 958 954 945 963 955 969 954 963 981 975 970 969 972 977 982 968 968 979 973 958 967 958 957 961 953 957 947 942 937 939 931 928 931 928 931 918 911 902 902 893
50 shots – HI 982, LOW 893
Should I try & lower the top hat a little to try & get more consistent shots or is this pretty good? The erratic #’s are from using unsorted pellets.
This string seems to be what you were looking for….Now that you
have found that bell curve (sweet spot) and you have the ability to
adjust the power, you need to start shooting
targets across the chrony to see what speed the pellets like the best..
Sometimes different pellets group better at different speeds.
The madness has just begun…..lol…Enjoy, it looks like you have
a keeper….