08-16-2010, 09:53 PM | #41 | |
Join Date: Jan 2005
Location: Stuttgart, Germany
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Re: Engagement of Area Targets with Fully Automatic Fire
Quote:
We can, for simplicity's sake, say that a 1 inch MoA at 100 yards gives us a 7 inch MoA at 700 yards, and 10 inches at 1000 yards. How does that relate to Acc and RoF in GURPS? |
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08-16-2010, 10:12 PM | #42 | |
Doctor of GURPS Ballistics
Join Date: Sep 2004
Location: Lakeville, MN
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Re: Engagement of Area Targets with Fully Automatic Fire
Quote:
Acc MoA 1 300.00 2 34.99 3 9.96 4 4.08 5 2.04 6 1.16 7 0.72 8 0.48 9 0.33 this includes Acc bonuses from ALL sources; it's the MoA of the delivered projectiles from the weapon. Meaning different bullets, esp particularly good or bad ones, can possibly move the Acc number. Is this bulletproof? No, likely not...but it works fairly well, and, well...the results speak well for this as a concept.
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08-16-2010, 11:57 PM | #43 |
Join Date: May 2008
Location: CA
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Re: Engagement of Area Targets with Fully Automatic Fire
I'm guessing that doesn't include the bonus from scopes or extra aim? I don't think either of those things will much affect dispersion, though braced/not braced probably should, right?
Anyways, very cool. |
08-17-2010, 01:16 AM | #44 | |
Join Date: Oct 2004
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Re: Engagement of Area Targets with Fully Automatic Fire
Quote:
Assuming you guess range correctly (which is often estimated to be off by 10-15% of range, tightened up considerably with good equipment) The beaten zone (the zone in which 75% or so of a mgs bullets land) for an mg is huge at short range and smaller at long range (the tiniest dip in sighting drives the bullets into the ground directly in front of you, and the slightest lift up goes over the target). This means that there is a higher likelihood of bullets spreading out over a greater area at short range (you shoot long and short) but as the range increases the beaten zone gets smaller by quite a bit. Statistically, you miss by a larger margin at short range than long. At long range you are shifting the whole dispersion group onto to target, so you are likelier to get the whole group on target, but at such long range, you may only get half or less of the dispersion group on target. This means, basically, in GURPS terms you have equal opportunity for missing or hitting at close or long range. That's with stationary gunner, shooting at stationary targets. Thus a separate rule is not needed, even if you don't use the "missed by one equals a hit" rule and the "+10 for plinking" rule or the stationary targets and automatic fire rule. For ref: http://www.globalsecurity.org/milita...m/6-40/Ch3.htm (Yes, this is artillery, but HT was written by Mike Hurst, a former cannon cocker.) For a good paper on MOA: http://www.bobwheeler.com/guns/GroupStat.pdf For something about beaten zone: http://www.globalsecurity.org/milita...-22-68/c05.htm |
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Tags |
high-tech, rapid fire, size modifier |
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