Mrhosted, I haven't spent a lot of time with the 22 set up, actually only had it a few weeks.
Airgun-hobbyist, I took your recommendation and did a little pellet sorting this morning. I had 94 pellets (JSB re-designed) left in a tin and sorted those. The lightest being 24.9 (3) and the heaviest was 25.7 (1) The top three groups with the most pellets each was the 25.2 to 25.4 groups, the regulator setting on about 149 and the HS adjust on #3. Velocity wise they shook out like this.
24.9's 951 949 949
25.0's 930
947 928 928 9
51 25.2's
946 925 925 921 923
25.3's 914 922 924 923
949 25.4's 925 923
941 928 925
25.5's 925
944 924 921 917
25.6's 927 922 926 924
25.7
944 So, o
verall from the lightest to the heaviest it is possible to see a 20-25fps difference which was is pretty believable out of tin of pellets.....but almost every group although sorted still had those inconsistent singles.
So out of curiosity I thought I'd slow the gun down with just the valve adjust and shoot a few 18.1's ..
939 945 946 940 948 946 953 949 948 940, much better!! Well since that worked out for the good on 18.1's I thought I try slowing down the RD's
AGAIN ( tried it previously and didn't see the same results) with just the valve setting from the third line and closed it 1/4 turn.
887 888 892 893 907 895 889 887 891 913 890. Now I can live with this but was wanting to shoot the RD's a little faster. Probably plenty fast for my use anyway.
It looks like all this time it was just a tuning issue especially after going through the gun and not finding anything mechanically.
I knew my barrel was probably also getting fouled so I cleaned it and at my new setting the string still looked good.
912 913 915 948 909 910 912 906 904 910 908, except for one shot.
Speaking of fouling barrel. It seems like this 22 slug liner fouls really fast and badly even after I polished it. Using a string pull through I can always feel some really rough spot through the barrel. After a couple of pull throughs it still felt terrible so I used my Patch Worm. It really grabbed some lead as shown in the photos. Sorry only one photo transferred.
Guys, I appreciate all the help
jking