View Full Version : Gun Measurements
08-11-2003, 03:27 PM
May be a stupid question but how do different companies get their measurements for their gun sizes???Just want to know if there is any standard method ....Example the stock and total length of the AB Biller Floridian 54 is shorter than the rhino ss 52"
08-11-2003, 03:34 PM
All SS guns have a 2" butt extension. Also all SS guns are about 1" longer in barrel lenght than a comarable size Biller.
08-11-2003, 04:36 PM
Kevin- Isn't the general measurement of a gun considered to be from the trigger mechanism to the muzzle? That was my understanding, but I have never had the need to know if it was correct. Your expert input is always appreciated.
08-11-2003, 07:05 PM
I thought the measurment on A.B. Biller and Sea Hornets were by the shaft length.
A Biller, 48 Special has a 48" shaft, this does not include the screw on tip.
My Riffe #3 Standard's and Hawaiian both have 55" Shafts, not including Screw on tip, the Hawaiian Flopper shaft is 57" .
08-11-2003, 08:22 PM
Rogers on the shaft length. A 48" gun takes a 48" 6mm threaded shaft with a screw on tip. 36,42,54 etc. The actual length of the gun (butt to muzzle) is not a relevent measurement.
If you are using a single unit (one piece) lineshaft or a freeshaft, you would most commonly use a 54" shaft in a 48" gun or a 60" shaft in a 54" gun. One size bigger (6") because the shaft already has the tip built directly onto the shaft.
This is just a general rule, some guys shoot 60" shafts in 48" guns because they like the extra distance the added shaft length gives them. However, you usually need to shoot two bands on a 48" gun with a 60" shaft to really get the shaft moving accurately and effeciently.
You can do it with one band but you usually have to really shorten the band to produce the torque to propell the added weight of the 60" shaft. The added torque can cause shaft "warp or flutter" and that can sometimes cause inaccuracy or excessive shaft drop on long shots.
I generally like to see no more than 12 to 14 inches of shaft protruding past the muzzle of the gun for single band shooting. There is a very delicate balance between barrel length, shaft length, and band length, especially when you are only using one band. The more bands (2,3 or 4) you use, the less this balance is a factor because you have a much greater force (hp) pushing the same weight projectile.
08-13-2003, 10:56 AM
Actually there is no universal measurement system... eg a railgun such as a rob allen measures along the tube/pipe! A 13cm Roballen is similar size to an American Riffe MT#5 (around 155cm/158cm?).
In cases where the shaft length is used as a defining measurement this is probly not to bright (IMHO of course) as depending on the person the shaft length is apt to change...
Hope that clears things up a little
08-13-2003, 12:34 PM
Seriously though, it's a good topic to bring up - never really thought about length differences between two different brands of 48" guns, different spear lengths you could put into one gun, and differential accuracy using single vs multiple bands til this post.
08-13-2003, 02:33 PM
:eek: Naughty Nauughty:eek:
08-13-2003, 08:43 PM
The better you want to get at spearfishing, the more you have to pay attention to details.
08-18-2003, 04:19 PM
mine's two inches....from my knee!!! ......zzzzz...zzzz...Leave me alone I'm tryin' to dream big here....
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