what size pvc gun should i make?
89683
Make one that shoots mini marshmallows.\n\nMy dog loves them, but the larger ones are too messy in the summer when they are not consumed, and they start melting on the walkway.
169716
I think it depends on the size of the shotgun you are using.\n\nA small bore shotgun just won't do justice on fine china, so using a 16 gauge or smaller would definitely be rude. You need at least a 12 gauge preferably with 3" magnum shells. I prefer to use my 10 gauge on my grandmother’s fine china, but that's just me.\n\n\n\nHappy shooting!
855343
As several have already advised, you want to use small shot and relatively low powered loads.  Extensive testing has been done with all variations of shot and shell that you can imagine for both law enforcement and civilian use.  I have reviewed and participated in many trials using typical housing materials and human ballistic compatible materials to simulate the effects of many different weapons, including shotguns, in a home environment.   Even with low brass, target or inexpensive field loads (#7 - #8 shot), the terminal effects were devastating within 2-15 yards.\n\nIn this range the shot pattern has very little chance to open up more than a few inches and thus most of the pellets and energy of the round is concentrated in a very small area of the target.  Total penetration of the pellets depended slightly on clothing, but typically ranged from several inches to more than 8".  In many of the trials the ballistic simulant was either cut in peices or turned into mush.  The small, soft lead shot also had a lessened tendency to penetrated both sides of a typically constructed home interior wall after passing through the target.  Most of the energy that remained after exiting the target was dissipated when the pellets hit the building materials and deformed due to their soft consistencies.\n\nSteel shot and even larger soft lead shot, proved to be much more apt to over penetrate or ricochet than small, soft lead pellets and I would not recommend steel, hardened or large diameter shot for home defense.  It is important to note that even small,soft lead  shot can't be called safe when discharged inside a building due to many known and unknown factors.  Known factors include, but aren't limited to pellets that miss the target and strike walls or ceilings without first passing though the intended target, weakened or varied building materials that the pellets may strike, distances and number of walls between bystanders and simply the innumerable dangers posed by discharging a weapon in such close proximity to others in an uncontrolled situation.  \n\nWith that said, if choosing to use a shotgun for home defense, I would stick with small shot and low powered loads.  There are even several rounds available in less than 2 3/4” sizes for all gauges of shotguns that provide ample terminal effects, but help reduce collateral damage even further.  Please remember that no matter what weapon you choose or what ammunition you pick, any can and will be lethal to humans under the right circumstances and should always be treated as such.  The opinions I have expressed here are simply to demonstrate how you might choose a relatively "safer", but effective loading than others mentioned in other answers to your question.  \n\nAgain I emphasize that that there is no load that is truly safe and could be relied upon to not seriously harm or kill another person either intentionally or unintentionally.  Even low powered loads and small soft lead pellets, can travel though walls, windows or any other housing material and still kill a person on the other side. Make sure you get some training and advise of a Certified Firearms instructor not only  to increase your safety and proficiency with your weapon of choice, but to help you with the weighty legal aspects of this topic as well.
987155
Normally you buy the raw material (pvc pellets) for a specific shore hardenss range. Minor alterations can be made using regrind material and process adjustments such as barrell temprature, speed and cooling water temperature.
422657
go to www.stoodyind.com  This site list all sizes for a specific metal thickness. They have a very complete chart showing everything you need to know about the cut. Psi, kerf, speed etc.
902189
Cartridges of the World lists 21 .38 cartridges and 3 .380's.  All use projectiles of approximately the same diameter but varying lengths and weights.  Case lengths, shapes, and rims are all different.
847229
i always used a 14inch j&j ceramic barrel for my tippman. i loved it one of the better ones ive had.
553397
Try the source below for size.  It is the Department of Labor site.  I have also included the VA site.
724952
http://www.onlineconversion.com/length_common.htm
607768
What size?? Diameter, what material (Wood, Metal,Polymer)\nHow many ?? and what lentgh. After answering that then  you can decide what Machinery you need. You can get anything from hand operated to fully Automatic.
314224
Find a Machinists Handbook, it will give you the major and minor diameters for numerous acme threads.\n\nIf you are looking for what is available. Search Mcmaster.com for acme
1112817
ok heres the deal i am a semi pro so i can help u easy. the CU is the cubic inches thats how much room is in the tank. PSI is pounds per square inch that how much pressure is in the tank. the higher the PSI that the tank can handle the more shots per fill you will get. but the tank regulates that air to a safe PSI for the gun. i use a 48 cubic inch/ 3000PSI on my ion and if drop the dwell and pressure on it you can get about 900 shots per tank. hope this helps GO DYNASTY
491179
.308, 7.62x39 are ok rifle cartridges for defense, 12 gauge buckshot is a lot safer/more deadly in a home environment though.  10mm/40 S&W/45 ACP are all fine pistol cartridges, 9mmx19 is a little underwhelming in my opinion.  As far as cheap goes, go for a SKS (7.62x39) and a 12 gauge remington 870 shotgun.  You can get both of these for about $425 total.  A good handgun is gonna cost you quite a bit more, don't buy the cheap stuff like kel-tec, you will be dissapointed.  Buy a brand name like S&W, Kimber, Para Ord., ect.
248229
Standard .580 core grips should be what you need. You can buy them here:\n\nhttp://www.proswing.com/new%20website/grips/grip%20list.htm
925065
Check out Numerich Arms, see link below. They should have any and all part that you might need, including your schematic.\n\nGood luck.
114914
Mathematically speaking, you bore it from being 0.30\ninches to 0.44 inches.\n\nI'm not very knowledgable about rifles, but I would\nthink that you'd face some problems in making he\naction, shell ejector, etc all work with the different\nsized shells.
238652
Assuming you have a rectangular object, then L x H x W will work. For other shapes you need something else. See sources.