Here is a pic of grouping at 12yds post tune

[AKJC1977]

Yeah I have replaced the Crosman cause of the flyers. Like ya said every 5th or 6th pellet is a flyer. Seems to be the ones that fit tight and crooked in the breech. I had some Beeman pointed,8.4 gr that had got a great deal on at Kmart. They are awesome in the Viper. I mean if ya can hold it there it will put 4 or 5 pellets thru same hole,wish I had of waited and posted some groups with the Beeman. I almost afraid people would think I'm B. S. 'ing them cause there is only one oblong hole. A fly landed on my target and I hit it while it was crawling,My wife saw that and got grossed out LOL. I have always had best groups outta domed or pointed,domed mostly. So I am gonna try some Superdomes and JSB exact's next. But the model 1239 Beeamn's I'm using are dang good,and seem very uniform in size. Thanks AKJC

[gamo2hammerli]

Forgot to mention.....I also used the .177 Crosman Premier Ultra Magnums (10.5 gr) during my test....I think I even submitted a few target sheets using those pellets for the above-mentioned match. Those pellets had flyers also.......I think it's because their skirts were harder....probably using a different alloy mixed in with it's lead......and the skirts would not "open up" to catch all the air behind it.

Just recently I tried out some Beeman Crow Magnums (8.8 gr).....and they seem to do well out past 15 meters. I will test them out more before using them for the 30 yard match. They should be "safer" for the spring(s) of the airguns than the Kodiaks (10.6 gr).

[AKJC1977]

Yeah if ya could find that perfect ratio of accuracy to longevity that would be great. I dont have a whole stable of airguns as some do on this site,so I will play it safe for now. But if I knew how to tune and rework a airgun I would be shootin whatever shot the best. One reason I am wanting a PCP gun so bad. I feel that there is less to wear and tear on them,but yet again I dont know much bout them either. Except for I want one.LOL Jason

[mze]

How do I view the pics?

[Rontier]

I wish mt Big cat would make that grouping!
I get about 3-5"group get decusted & with the crosman hunters..
RD

[AKJC1977]

Kinda sounds like a velocity variance. Before Gene tuned the viper it was up and down. The pre tune test He chronied was from a high of 1090 to a low of 865. It seemed fairly accurate but I noticed I had to adjust poi with scope considerably.After the tune the velocities never varied more than like 6 fps in 12 shots. That was before the seal and stuff was broke in,might even be better now. But I have no chrony to test it with. I could be wrong but I would be trying to find a chrony to buy or use and see if thats it. Cause I just switched to Beeman 8.4 grain pellets and the groups I am gettin now makes  the one in the pic look kinda bad. Good luck,and if all else fails give Gene a holla He will point ya in the right direction.Jason