CFX inconsistent velocities

CFX inconsistent velocities

Joined: February 9th, 2006, 11:46 pm

October 26th, 2006, 10:03 pm #1

I am getting 75+ fps spreads with my CFX. This has been true since the rifle was new. I have rebuilt several times with 2 different springs, new seal, new spring guide, cylinder hone etc. and still I get a wide spread. Do other CFX rifles have consistent velocities?

Thanks,

Bill
Last edited by bbeach1 on October 26th, 2006, 10:03 pm, edited 1 time in total.
Reply
Share

Joined: February 14th, 2006, 4:12 pm

October 26th, 2006, 10:10 pm #2

shooting the Beeman FTS pellets. I'll chrony it again in a bit, but it was doing like 890 +-3 FPS with nothing over 5 deviation in a 10 shot string.
Reply
Share

Joined: February 17th, 2004, 1:35 am

October 26th, 2006, 10:11 pm #3

I am getting 75+ fps spreads with my CFX. This has been true since the rifle was new. I have rebuilt several times with 2 different springs, new seal, new spring guide, cylinder hone etc. and still I get a wide spread. Do other CFX rifles have consistent velocities?

Thanks,

Bill
This may help us finding a solution. You may already have the info or answers. I'm just trying to nail down the parameters. Ric

1. What kind of pellets have you tried, so far?

2. Is the Serial Number on the Barrel or Side of the Receiver?

3. Do you Lube the Pellets or the Chamber?

4. Is the Barrel Clean and Dry?

5. Does any Smoke appear after a shot?
Reply
Share

Joined: October 21st, 2001, 3:36 am

October 27th, 2006, 12:39 am #4

I am getting 75+ fps spreads with my CFX. This has been true since the rifle was new. I have rebuilt several times with 2 different springs, new seal, new spring guide, cylinder hone etc. and still I get a wide spread. Do other CFX rifles have consistent velocities?

Thanks,

Bill
is how my chronograph will read-out spread like that when I chenge the angle at which I shoot over the sensors. If you are shooting at EXACTLY the same trajectory without a doubt, and your cronograph is set up properly and reliable my next guess would be lube greeping into the compression chamber.

Reply
Share

Joined: February 14th, 2006, 4:12 pm

October 27th, 2006, 12:47 am #5

shooting the Beeman FTS pellets. I'll chrony it again in a bit, but it was doing like 890 +-3 FPS with nothing over 5 deviation in a 10 shot string.
After a 10 shot warm up 36" fom Chrony:
Beeman FTS 8.8gr
868.1
862.8
863.1
862.3
860.9
865.0
862.3
862.8
866.4
863.3
Reply
Share

Joined: February 9th, 2006, 11:46 pm

October 27th, 2006, 4:23 pm #6

This may help us finding a solution. You may already have the info or answers. I'm just trying to nail down the parameters. Ric

1. What kind of pellets have you tried, so far?

2. Is the Serial Number on the Barrel or Side of the Receiver?

3. Do you Lube the Pellets or the Chamber?

4. Is the Barrel Clean and Dry?

5. Does any Smoke appear after a shot?
I have been using Crossman Premiers, I have seen the same results with other pellets.

The serial no. is on the left side of the reciever just forward of the loading port.

I do not lube pellets or the chamber.

Barrel is clean and dry

There is no smoke after the shot.

My Chrony seems to be working fine, my RWS 52 and RX1 both show only a few feet of variation between shots.

Thanks,

Bill
Reply
Share

Joined: February 14th, 2006, 4:12 pm

October 27th, 2006, 6:34 pm #7

choices are (If you want consistency):
RWS Superdome
Beeman Kodiak
Beeman FTS
Beeman Ramjet
Thats about it. I like the Kodiaks best with FTS a close second. If your SN was on top the barrel, the Premiers do pretty well.
Reply
Share

Joined: February 18th, 2002, 7:43 pm

October 28th, 2006, 8:41 am #8

I am getting 75+ fps spreads with my CFX. This has been true since the rifle was new. I have rebuilt several times with 2 different springs, new seal, new spring guide, cylinder hone etc. and still I get a wide spread. Do other CFX rifles have consistent velocities?

Thanks,

Bill
use heavier pellets to get your shot to shot fps smaller. But this doesn't necessary means the gun will shoot more accurately.
Reply
Share