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center
In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force may be applied to cause a linear acceleration without an angular acceleration. Calculations in mechanics are often simplified when formulated with respect to the center of mass. It is a hypothetical point where the entire mass of an object may be assumed to be concentrated to visualise its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion.
In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located at the centroid. The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe. In the case of a distribution of separate bodies, such as the planets of the Solar System, the center of mass may not correspond to the position of any individual member of the system.
The center of mass is a useful reference point for calculations in mechanics that involve masses distributed in space, such as the linear and angular momentum of planetary bodies and rigid body dynamics. In orbital mechanics, the equations of motion of planets are formulated as point masses located at the centers of mass. The center of mass frame is an inertial frame in which the center of mass of a system is at rest with respect to the origin of the coordinate system.
Here is a Smith & Wesson Performance Center 9mm Shield 2.0, which has never been fired and I'm only parting with it because I just have not had time to take it out on the Range and shoot, so I would like to sell it to a gun enthusiast who would be interested in purchasing it. I should note it...
Shield plus 4” performance center 9mm package, all set up for carry. Comes w 3 magazines, two holsters and Ameriglo night sights. 200 flawless rounds thru barrel. Here’s what I paid….
Shield Plus - $630
Ameriglo night sights - $90
Vedder IWB holster - $65
Vedder Mag holster - $40
Xtra magazine...
Hi I'm looking for a case prep center. Not picky on brand just a functional case prep center.
Have some primers, powder, projectiles, ammo and cash to throw at one.
Thank you -Jeff
Smith and Wesson M&P9L Performance Center. Ported stainless 5" barrel, ported slide, optics ready with mounting plates (from s&w). Comes with 4 factory mags, Springer Precision Magwell and baseplates.
Exactly 300 rounds through it, bought it new. Have original sales receipts.
Comes with dual mag...
Very good condition TC Hawkins percussion rifle complete with shooting accessories: balls, maxi balls, patches, lube, cap holder/applicator, bullet starter. Rifle is almost as new. $400
375 rounds center fire ammo
74 rounds brass cartridge 40 S&W ammo – mixed mfrs
64 rounds brass cartridge 45 Colt Cowboy Action ammo – mixed mfrs
13 rounds 44 Magnum brass cartridge ammo – mixed mfrs
142 rounds 380 brass cartridge ammo – mixed mfrs
47 rounds 9mm x 19 blank ammo – May not cycle...
Not much to say here, it's a solid piece but we don't need it anymore. It's free to anyone who wants it. You'll need a pickup truck or trailer and two strong gentlemen to get this up the stairs, but it's a straight shot out to the driveway. EDIT: Comes with a free scope. Two free knives as well...
Performance Center Victory Target with Crimson Trace CT105, New in Box unfired, 2 mags, red dot, threaded carbon fiber, spec sheet in pic's
Chaffee
503-658-8525
Final price drop $700
Comes with Apex flat face trigger and sear, Leupold DPP 2moa, Inforce APL, T.Rex arms holster with a belt slider, blade tech double mag carrier and 3 magazines, one of which has the Tarran tactical +6 stendo for 23 rounds total. Put this little hole puncher together for...
I have for sale a very cool little muzzle loader. It is a Thompson Center Scout in 54 cal 20” barrel. Uses the #11 caps. Should be Oregon legal for hunting. Standard wear from use. I didn’t polish up the brass. I’ll leave that decision up to the next owner. I took it apart and cleaned the nipple...
Extras include a kydex belt holster valued at $30, 3 eight round magazines, 1 seven round magazines extra $100 value. I bought new in 2015, put approximately 300 rounds through it. Functions flawlessly and is extremely accurate. 5 lb crisp break trigger with nice reset and minimal...
.38 special plus P rated
2 Don Hume holsters
2 speed strips
Hogue grips and pearl grips that came with it
100 rounds included for supporting members
Includes case the gun came in and factory materials
TRANSFER TO BE DONE IN OREGON CITY AREA AT BUYERS EXPENSE
Smith and wesson performance center shield. Factory porter. Fiber optic sites. Trigger worked over from s&w factory. Nice gun. Has safety. Perfect for carry. Has a couple marks on right side that may rub off if you tried. From button on pants I believe.
I purchased this almost 2 years back. Intention was to trim 300Blk cases (I created the cases from 223). Used the prep center to trim roughly 320 cases. It has been sitting on reloading bench ever since. Just want to sell it to make room on bench. I no longer have the original box nor...