Advanced Marksmanship Higher MV's for moving targets?

earthquake

Area Man
Full Member
Minuteman
  • Jul 30, 2009
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    A buddy of mine works for a "group" that does counter piracy. They are interested in getting better long guns and was asking a question about the .300RUM. I don't know much about it so thought I'd post here asking you folks. Here's his statement:

    "<span style="font-style: italic">Since I have all you shooting studs here. Let me ask you a question. I work for a company that does counter piracy. We are looking at some upgraded long guns. Due to the relative motion of the ships and pirates and the speed of the boats, my thought is to go with something very fast like a 300 RUM. (150 grains at 3,300) as opposed to our standard .50, .338. Any thoughts?</span>"

    He mentioned that .338's and .50's are way too pricey (the rifle and the ammo) for the amount of weapons they are purchasing. Any thoughts on the .300RUM?
     
    Re: Higher MV's for moving targets?

    Boltripper has never seen .300rum offered at any port of call.....


    this is an airsoft question right, cause there will be the constant Coriolis effect and motion of the ocean, not to mention a very low "DA"....
     
    Re: Higher MV's for moving targets?

    Yep, airsoft-mall-ninja-SEAL-antipirate-blackops mission.
    smile.gif


    I'm, I mean, he, is on his daddy's Party Barge on Lake Erie shooting at his buds closing in fast on their Coleman QuickPak K5's.
     
    Re: Higher MV's for moving targets?

    well and increased MV is clearly going to decrease TOF (time of flight). When shooting something that goes in a straight line this really isnt a big deal since you just lead the target more or less based on your time of flight at that given distance and in that situation a higher MV isnt really better, just different. That being said, boats are a different case since in addition to moving in a generally straight path, a boat on the ocean rises and falls with the oceans swell in a way that is very hard to compensate for. as a result, a higher MV and therefore a lower TOF would be theoretically better for your friends specific scenario because while you can make an educated guess based on that patterns that you have been observing, you cant know for sure exactly what the ocean is going to do less and a lower TOF leaves less time that you have to guess about and less inconsistant movement to compensate for making it theoretically better. I just put some numbers into a ballistics calculator and the 300 RUM had a TOF that was about half a second shorter than the .308 load that i use at 1000 yards, about a quarter second difference at 500 yards, about a tenth of a second at 300 yards, about .06 seconds at 200, and about .02 seconds at 100 yards. So in order to really see any benefits you have to really get pretty far down range, and lets face it a shot from a boat onto a target on another boat at even 200 yards.....you better be a damn good marksman. the likely hood of your friends "group" engaging targets at a range that is far enough to make a different is very minimal (i could be wrong but that just what i would think). and really, when the different is less than a tenth of a second, as long as your aiming at center mass you are still going to hit the man. So, while a higher MV is theoretically better for your friends situation, in practice, it really isnt going to make a difference IMO, and i wouldnt base my decision on that factor.
     
    Re: Higher MV's for moving targets?

    Kinda what I was thinking. I can't imagine engagement distances are very far at all. TOF wouldn't be that great a diff at close range. Hell, if you want speed and cheap, .220 swift would probably do the job. Use a .50 to take out the boat at long range before they get close, and a regular old .300WM to deal with bad guys?

    (airsoft/simulated of course)
     
    Re: Higher MV's for moving targets?

    In any occupation, folks are found seeking better tools and techniques to get the job done. I suppose occupational shooters are no different. In the case of the counter pirate, however, who knows? Right off though, his statement appears too ignorant for him to be a part of such an organization, much less having any say in SOP, strategies, and tactics.
     
    Re: Higher MV's for moving targets?

    I would tell him to go with a caliber that is readily available and inexpencive...cause it sounds like they need to do a lot of practicing before they are going to engage moving pirates.

    Moving targets are tough, moving shooter and moving target is real tough, one needs to do it to be able to do it...otherwise they are dangerous. One who has done it would know the answer to the question asked.
     
    Re: Higher MV's for moving targets?

    Well, all of the counter-pirate stuff aside, I have a buddy with a 300RUM and it is one deadly weapon - he gets the 210grainers going at 3200+fps, which translates into massive downrange energy. It is also very accurate. Barrel life is low, he reloads for it, and rifle is very heavy. Probably not the most tactical choice, but if you are hunting anything in North America from a bench or prone, it will easily do the job.
     
    Re: Higher MV's for moving targets?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: COfox</div><div class="ubbcode-body">A buddy of mine works for a "group" that does counter piracy. </div></div>
    What group?
    If you don't hit it more speed won't help one bit unless your sending select specials.

    I'd have no problem running a SVD for long, an switching to a RPK, or PKM for closer, saving the AK for on board if need be.
    Std. Ammo an specialty stuff, should be everywhere for those weapons. They are cheap, an work. If US weapons is a have too, I'd just do a 300wm or .308 for long, an M4's for on board. Remember tactics win fights, weapons just allow you to be the last ones standing after both sides and their plans, have made contact.
     
    Re: Higher MV's for moving targets?

    I posted about this some weeks back and it appears to be a hard ask to carry anything that falls into the tacticle or military catagory on these ships as they enter forign ports. Some guys I met in this proffesion say hunting rifles are what they carry in 308
     
    Re: Higher MV's for moving targets?

    I got more clarification. They require a large supply of weapons, hence need something inexpensive. He was looking into the RUM for a high-energy round to punch holes in boats. .50's are too expensive to equip all their guys with (they have a few M82A1's already) so he was thinking about the RUM. Though I and another friend suggested the .300WM since ammo is more readily available and cheaper. .300WM MV's are somewhat near those of the RUM and with a heavy bullet could do some damage too.