Well I was looking for a little .177 carbine and while researching came across the Brocock Compatto. Was going to get a new one in .177 when along came a used one in .22 and I found that the seller was only an hour from me. Wound up picking the gun up this weekend and tearing into it right away. It does have the Slingshot hammer in it, but I really don't think this hammer does as good a job in an FAC gun as it does in the sub 12fpe.From what I've been able to find on the SSH when the hammer is at rest the inner hammer should not be touching the valve stem. When I adjust the set screw so that this is possible I can't get anymore then about 12fpe out of the gun. It's really quiet and gets a bunch of shots though. So what I have decided to do is order a few heavier springs to see if I can make the SSH also free float by having a negative preload on the outer part of it. If I can't it only about $12 .
I really like the "fit" of the gun. It's lightweight, balanced and shoulders perfectly for me. This is the first gun I've owned with an adjustable butt pad. I think I will be installing others now.
On a side note - I need to thanks Jeremy (Smaug) for pushing me over the edge to get this.
Anyway I readjusted to inner hammer to get the below string. While is is a nice tight string the efficiency only equates to a bit over 1fpe/cuin.
Using 15.9jsb's and a fill pressure of 3400psi. (The FAC guns have a max fill of 240bar)
874
867
870
878
878
881
881
883
887
886
877
877
888
887
881
888
885
886
881
885
884
878
874
873
852
856
859
843
846
848
I also ran a string with the 14.3's and it started at 906, peaked at 932 and then ended at 897 after 25 shots
Took it out this morning. Hooked up my Regged (2800psi) Ninja bottle. Threw on a little 2-7x32 Hawke and got it sighted at 25yds. with the first 10 round mag.
The shots circled are my sighters. I then shot 8 different pellets for 5 shot groups. All 3 JSB pellets easily outperformed the other brands (The single not touching the group in the 18.1's was my fault, I knew it was of when I squeezed) but most every pellet would produce hunting sized groups at 25yds. Wind was blowing 5-6mph so it really had no effect. I was shooting it as pictured, front chinese bipod and rear sand bag.
I really like the "fit" of the gun. It's lightweight, balanced and shoulders perfectly for me. This is the first gun I've owned with an adjustable butt pad. I think I will be installing others now.
On a side note - I need to thanks Jeremy (Smaug) for pushing me over the edge to get this.
Anyway I readjusted to inner hammer to get the below string. While is is a nice tight string the efficiency only equates to a bit over 1fpe/cuin.
Using 15.9jsb's and a fill pressure of 3400psi. (The FAC guns have a max fill of 240bar)
874
867
870
878
878
881
881
883
887
886
877
877
888
887
881
888
885
886
881
885
884
878
874
873
852
856
859
843
846
848
I also ran a string with the 14.3's and it started at 906, peaked at 932 and then ended at 897 after 25 shots
Took it out this morning. Hooked up my Regged (2800psi) Ninja bottle. Threw on a little 2-7x32 Hawke and got it sighted at 25yds. with the first 10 round mag.
The shots circled are my sighters. I then shot 8 different pellets for 5 shot groups. All 3 JSB pellets easily outperformed the other brands (The single not touching the group in the 18.1's was my fault, I knew it was of when I squeezed) but most every pellet would produce hunting sized groups at 25yds. Wind was blowing 5-6mph so it really had no effect. I was shooting it as pictured, front chinese bipod and rear sand bag.