Hi Justin,Justin wrote:Hi all,
Glad I found this useful site!
I've just purchased a Smith and Wesson 78G. It is a later model with the non-adjustable trigger and the cocking knob only has one power setting, unlike the earlier version. I didn't realise the later ones lacked the 2 settings on the cocking knob and for some reason mine does have 2 points at which the knob may click into place. However, if you push it fully forward, to the second click, it then jumps back to the first point as the trigger is depressed. I wondered why this is so? If there is just one power setting on the cocking mechanism, why have 2 points at which the cocking mechanism may be clicked into place?
It seems to perform fine - I got around 50- 60 shots from 1 C02 capsule. Does anyone know if this is the normal range shot indoors in the warm?
When it arrived via airmail I could not open the screw plug in the pistol grip to put C02 in. I took it to a local airgun specialist gunsmith nearby (Knibbs) who told me it had C02 in it! They then, oddly, told me that was why it had been jammed and, equally oddly, told me they could not release the screw to let the C02 out slowly because it may 'explode'. I was told they were fully booked so I could not leave it to be repaired. I then took it to Shooting Supplies in Bromsgrove who fixed it in 5 mins for a fee of £2.30. They opened it with grips (Knibbs had tightened it up again too tight), a tiny amount of C02 hissed out, and then it was noticed a new O ring was needed, and one from an Airmagnum was fitted.
In future I'd like to get it serviced and wondered if anyone knew of someone able to work with these. Most people who deal in vintage airguns seem to have never heard of the 78 / 78G and think a Smith and Wesson must be an Umarex 5/686.
Cheers,
Justin
I have the same model of 78g as you and experience the same thing.If on cocking I allow the cocking 'lug' to over travel it seems to find a second position that it will stay cocked at albeit tenuously a good slap on the pistol grip is enough to unseat it.Short of stripping the gun to investigate I can only guess at the cause,but am sure it was never intended as a secondary position so I cock the gun and concsiously avoid this happening.They are great guns,powerful and accurate and I am sure you will anjoy yours.ATB
Mark.