Fas 604

[Aimstraight]

Can anyone please confirm what the actual (measured) velocity is from the 604 (pellet dependant of course).

Also whether there is any difference in velocity between the Mk1 and the Mk2. I understand the Mk2 was slightly longer so maybe that affected the length of the barrel/air cylinder.

I have read one bbs thread that mentioned that the 604 fell short of the published 400fps, and read on other forums values of 370fps even when seals have been replaced.

Thank You

[Inspector 71]

I had my Mk 2 serviced (new seals and felt scraper) by Checkmate Guns in September. Chrono tests showed 380fps average. This was with an 8 grain JSB.

[Rickenbacker]

Hi Mr Straight.

Here's a few historical posts to get you started:

Hi there.I put mine over the chrony tonight and its doing 348 fps with h+n finale match,357 fps with rws geko's and 362 fps with rws hobby's...

Just had a play with the chrono,
rws hobby, 396.82 ft/s 2.45 ft lbs
7.0 grains 391.38 ft/s 2.38 ft lbs
389.4 ft/s 2.36 ft lbs

rws superdome, 359.58 ft/s 2.38 ft lbs
8.3 grains 360.68 ft/s 2.39 ft lbs
362.31 ft/s 2.41 ft lbs

napier power target, 364.63 ft/s 2.45 ft lbs
7.69 grains 362.64 ft/s 2.42 ft lbs
362.31 ft/s 2.42 ft lbs

Mine runs about 375 with Matchpell but more importantly with amazing consistency. (373-377)

[harvey_s]

Mine was the same 375-380 IIRC, I do recall the whole reason I traded up was it sometimes didn't punch clean holes in the cards.
That said, it certainly wasn't inaccurate - but it did make me wonder if the pellets were starting to tumble at 10m...

[Aimstraight]

Mine was the same 375-380 IIRC, I do recall the whole reason I traded up was it sometimes didn't punch clean holes in the cards.
That said, it certainly wasn't inaccurate - but it did make me wonder if the pellets were starting to tumble at 10m...

Again as I expected, thanks for all the responses. Lovely pistol, accurate, easy to cock, but IMHO a tad underpowered for clean holes at 10M.

[Aimstraight]

Mine was the same 375-380 IIRC, I do recall the whole reason I traded up was it sometimes didn't punch clean holes in the cards.
That said, it certainly wasn't inaccurate - but it did make me wonder if the pellets were starting to tumble at 10m...

Someone else that had similar thoughts (post #5).....

http://www.airgunbbs.com/showthread....istol-any-good

[Inspector 71]

If they tumbled, they would keyhole the target and be hopelessly inaccurate. A slightly ragged cicular hole is fine but off putting psychologically.

You can dry fire the 604, the mk2 at least.

Comparisons with the HW75 are folly. The 604 sits low like a target pistol should. The 75 is like a high sided vehicle.

[Benelli B76]

Most I got out of my 604 is 390 with 7 grn, so I prefer shooting my Airmatch 600 which looks like a slightly longer version of 604. This pistol feels very similar in the hand but puts out up to 450 fps.

Baz

[Aimstraight]

If they tumbled, they would keyhole the target and be hopelessly inaccurate. A slightly ragged cicular hole is fine but off putting psychologically.

You can dry fire the 604, the mk2 at least.

Comparisons with the HW75 are folly. The 604 sits low like a target pistol should. The 75 is like a high sided vehicle.

Yes, I tried a Mk1 which could also be dry fired (cock the trigger/internal hammer only). Maybe the old thread was referring to the point that the 75 can be dried fired just by pulling back the hammer. This is a useful feature....but I found cocking the hammer for every shot a drag. The trigger on the 75 was the best I have ever tried, but I did not like the clunk of that huge hammer slamming the valve.

[Iain K D]

Comparisons with the HW75 are folly. The 604 sits low like a target pistol should. The 75 is like a high sided vehicle.

http://i301.photobucket.com/albums/n...FAS6004019.jpg

Spot the difference!

Iain

[Aimstraight]

Interesting and more or less what I expected. Not a million miles off the 6004 mentioned here.

[harvey_s]

One other thing, I thought the only differences between mk 1 & 2's related to the trigger and grips.
As far as I knew all the other parts were the same...

[Inspector 71]

It certainly doesn't hole punch like my LP2.
There's discernible ragging. The pellets are certainly not tumbling though.
One thing I will say, even though it makes my wallet ache. The 604's grip is
A lot better than the Steyr's.

The 604 just looks soooo cool too.

[Geezer]

"The 604 just looks soooo cool too."


I will confess that was a significant factor in me getting one. It just looks "right".