Daisy 717/747's

[airbob]

Requesting information: Why do some Daisy 717/747's get 350fps and others get 395fps? Some original boxes claim 350pfs and others claim 432fps. Where and who are the best gurus to work on them?

Next: Are the new Air Venturi replacements for the M46 as good or better? 

Last question: I live in the North Georgia/North Carolina area. I can't seem to find much in the way of local matches. Any suggestions?

Thanks in advance. 

Bob

 

[boscoebrea]

A claim ,for who to prove...those are so called target pistols,do not need much power. I wore my 717 out and put a different, more powerful spring in it.The thing to remember is you do not want a harsh firing cycle,so a softer spring can help you out.

I would think the M47 would be a better choice,it is pneumatic vs. spring powered.

 

[Ripper]

A claim ,for who to prove...those are so called target pistols,do not need much power. I wore my 717 out and put a different, more powerful spring in it.The thing to remember is you do not want a harsh firing cycle,so a softer spring can help you out.

I would think the M47 would be a better choice,it is pneumatic vs. spring powered.

I’m trying to understand what you were talking about when a daisy 717 is not a springer. It’s a single pump pneumatic. There is no harshness and are very accurate and very easy to rebuild.Mine shoots Around 395 FPS.

 

[boscoebrea]

Sorry for that.You are right...was thinking of my P1....Thanks for correcting me.

 

[ron_c]

I bought a new 717 about 2 years after they came out and the velocity out of the box was about 354 fps. I checked the adjustment of the pump lever to the receiver and the distance was just 1". Adjusting it to just under 1 1/2" and the velocity increased to 382 fps. This was with H & N High Speed pellets that weighed 7.2 grains. The don't make these particular pellets anymore. 

In 1994 I bought a new 747, the velocity was 398 with 7 grain WC pellets. I still have the 747 and it has had thousands of pellets shot through it. Several internal parts have been replace over the years from wear, same with O Rings and the wiper. Still shoots very accurate (original barrel assy) and velocity is 414 with R10 7 grain WC pellet and 382 with Crossman 7.9 grain Dome pellet. The R10 pellets are mostly 4.50 and 4.49 mm, the Crosman Dome are oversize and runs from 4.51 to 4.55 mm. The H&N Match Green WC pellet 5.25 gr. – 452 fps, alloy pellets but not as accurate as the R10.

 

[Steveoo]

I have tweaked one of these in my time ….a 747 version but essentially the same gun with a Walther barrel.

The key is to carefully adjust the seal as close to the bulkhead as possible on closure of the pump. (We call it dead heading in UK) also used Pellgun oil which has an O ring conditioner in its make up, oiling the felt wiper…to get the best out of the O ring condition.

One more thing worth doing, is lapping the front face of the piston, which has crude casting marks on it….a sort of casting ridge standing a good few thou up on the front face. Smooth this off flush by sanding the face down on some wet and dry 600 grade…then performing the dead heading procedure above gave me another 10 fps. I had H&N match running 405 fps. 411 fps, 408 fps.

A vastly underrated gun. I regularly outshot a HW40 when comparing the two. I concluded that its bolt loading was seating pellets more consistently and making it less pellet fussy because its trigger was not as good as the HW so it had to be the bolt loading, or longer barrel giving it some unseen extra.