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stock dimensions
Posted: Wed Oct 17, 2007 3:59 pm
by ALIHISGREAT
i wan to make a stock out of wood for my bb sniper in the style of an l96, styre scout tactical, or m40a3 but i can't find dimensions anywhere for any stock
Posted: Wed Oct 17, 2007 6:41 pm
by silverdooty
i like my stock with a 14 1/2" length of pull, a 3/4" drop at heel and a 3/4" drop at comb. this would be more common for an assault rifle such as an FAL than a sniper.
try googling
Code: Select all
rifle stock "length of pull" "drop at heel" "drop at comb"
827 results
Posted: Wed Oct 17, 2007 10:13 pm
by jackssmirkingrevenge
Have you got a ruler and a calculator?
Posted: Thu Oct 18, 2007 1:24 am
by ALIHISGREAT
jackssmirkingrevenge wrote:Have you got a ruler and a calculator?
that was going to be my last resort lol
Posted: Thu Oct 18, 2007 2:00 am
by jackssmirkingrevenge
You can do it fairly easy with image editing software.
Crop the side view in such a way that the ends of the image are the muzzle and butt end of the rifle, resize the width of the image to the actual length of the rifle then print it out in its actual size. Tape the resulting sheets together and you have a full size template of the rifle.
Posted: Thu Oct 18, 2007 2:17 am
by Marco321
jackssmirkingrevenge wrote:Have you got a ruler and a calculator?
Ruler and calculators are for the weak
But seriously, go up to a mirror, hold an imaginary gun as you would want to hold the finished product. Then get a friend, or use your other hand with a ruler and roughly gauge the distances. Then if you feel the need, cut the stock out of some ply wood as a template, adjust it as you feel the need, then you have a template for the stock.
Posted: Thu Oct 18, 2007 2:47 am
by jackssmirkingrevenge
Ruler and calculators are for the weak
Au contraire, they're for the patient who get on with the job instead of waiting for everything to be spoon fed to them
Posted: Thu Oct 18, 2007 2:59 am
by Marco321
jackssmirkingrevenge wrote:Ruler and calculators are for the weak
Au contraire, they're for the patient who get on with the job instead of waiting for everything to be spoon fed to them
I know, i was joking. I use my calculator and ruler alot, they have a permanent spot on my desk
Posted: Thu Oct 18, 2007 9:37 am
by ALIHISGREAT
i went with the ruler and calculator method and made myself a nice cardboard template. also do you think a 1/4" qev would have good enough flow for a 6mm barrel? 1/4" is around 6mm isn't it so maybe i would have to have a 1/2" qev?
Posted: Thu Oct 18, 2007 9:40 am
by jackssmirkingrevenge
Sounds about right.
Posted: Thu Oct 18, 2007 9:47 am
by ALIHISGREAT
jackssmirkingrevenge wrote:Sounds about right.
could you put this through ggdt for me please? a 1/2" qev piloted by a 1/4" blowgun, a 60cm 6mm barrel and a 40cm 1/2" chamber shooting a bb at 200psi. thanks.
Posted: Thu Oct 18, 2007 10:23 am
by MaxuS
About time you learnt how to use GGDT.
Posted: Thu Oct 18, 2007 10:31 am
by jackssmirkingrevenge
MaxuS wrote:About time you learnt how to use GGDT.
I think it doesn't work on his PC
I don't know the details of your QEV so can't really model it.
Posted: Thu Oct 18, 2007 11:52 am
by ALIHISGREAT
jackssmirkingrevenge wrote:MaxuS wrote:About time you learnt how to use GGDT.
I think it doesn't work on his PC
I don't know the details of your QEV so can't really model it.
i can't find any details
Posted: Thu Oct 18, 2007 1:06 pm
by jackssmirkingrevenge
A rough estimate with a 0.20 gram BB gives you around 750 feet per second.
A small tip - cutting the chamber length to 20cm and increasing the pressure to 300 psi gives you around 810 feet per second.
Lengthening the barrel to 90cm gives around 860 feet per second with your original setup and around 920 feet per second with the suggested shorter chamber and higher pressure. Just a thought
