Gamo CFX 177 groups - GTR4G upgrade
Posted: Wed Jan 11, 2012 7:26 pm
I am in the process of upgrading the trigger in my Gamo CFX 177. I have ordered it from the USA & waiting for it to arrive, so while I am waiting I thought I might try some different pellets to do some before & after measurements. I am trying the artilary hold in the bench rest position. Distance is 15 yards measured with my range finder, as it the area I have to work in. I am using a coffee tin filled with sand as a pellet trap with a concrete slab as a back drop.
Pellets used, there were 4 different kinds & weights, all weighed on my powder scale as they are not marked on the tins.
Pellet
Diabolo Spitz Kugeln (Pointed Head) 8.9 Grain 5 shot group.
Beeman Silver Bear (Hollow Point) 7.3 Grain 5 shot group
Beeman Ram Jet (Dome Head) 9.9 Grain 5 shot group
Winchester Supreme (Pointed head)8.0 Grain 5 shot group
As you can see the Silver Bears are rubbish in my CFX & I have 5 unopened tins, thats right 2500 of them!
I can send them free to a good home just PM me your details.
The others offer resonable groups & worth persevering with once I get the new trigger. Im not the best at using the callipers but you get the idea.
Pellets used, there were 4 different kinds & weights, all weighed on my powder scale as they are not marked on the tins.
Pellet
Diabolo Spitz Kugeln (Pointed Head) 8.9 Grain 5 shot group.
Beeman Silver Bear (Hollow Point) 7.3 Grain 5 shot group
Beeman Ram Jet (Dome Head) 9.9 Grain 5 shot group
Winchester Supreme (Pointed head)8.0 Grain 5 shot group
As you can see the Silver Bears are rubbish in my CFX & I have 5 unopened tins, thats right 2500 of them!
I can send them free to a good home just PM me your details.
The others offer resonable groups & worth persevering with once I get the new trigger. Im not the best at using the callipers but you get the idea.