100gr .243 win prob

lesterg3 · Posted: Wed Dec 31, 2008 12:38 pm Post subject: Re: 100gr .243 win prob

Handloader

Handloader Said:
Regarding load development: While OCW has some good insights into accuracy consistency, another factor is volumetric fill of the case. I prefer my handloads to fill at least 90% of the case volume*. Burn rates and bullet weight dictate which powder(s) will accomplish this. If we apply this idea to the use of H414, we find max load data achieves around 80% fill with 100gr bullets. IOW, moving to slower burning powders will increase the charge weight and the fill %.

Not trying to be stupid here but I want to make sure I understand.

I have not looked at all my manuals, but Barnes gives a load density measurement, is this not what you are talking about with case fullness?

fnuser · Posted: Thu Jan 01, 2009 4:56 pm Post subject: Re: 100gr .243 win prob

[quote="lesterg3"]Handloader

Handloader Said:
Regarding load development: While OCW has some good insights into accuracy consistency, another factor is volumetric fill of the case. I prefer my handloads to fill at least 90% of the case volume*. Burn rates and bullet weight dictate which powder(s) will accomplish this. If we apply this idea to the use of H414, we find max load data achieves around 80% fill with 100gr bullets. IOW, moving to slower burning powders will increase the charge weight and the fill %.

Not trying to be stupid here but I want to make sure I understand.

I have not looked at all my manuals, but Barnes gives a load density measurement, is this not what you are talking about with case fullness?[/quote]
Nosler #5 does too, Speer just tells you if its compressed or not, ie 100% which is kinda confusing cause the amount of compression can only really be described by a %. Like 105% is packed more tightly than 100% [nosler#5 p188 260 rem 140g bullet H1000 powder]

Vince · Posted: Thu Jan 01, 2009 10:29 pm Post subject: Re: 100gr .243 win prob

Lester, have a look at this article mate:

OCW

There are a number of very helpful Articles on the Home Page of HuntingNut that you will find very useful.

Cheers, Vince

hdmyg85 · Rookie Member Joined: Jan 02, 2009 Posts: 1

Has anyone bought this type of sling shot before that holds the amo in the handle? www.liangdianup.com/sporting_1.htm
this company has free shipping to anywhere in the world and they guarantee delivery to Australia. I heard that sling shots
are ok to sell in Australia as long as you say they are being used to toss bait in the water when you go fishing, any truth
to thatone?

Vince · Posted: Fri Jan 02, 2009 12:15 am Post subject: Re: 100gr .243 win prob

hdmyg85 wrote:

Has anyone bought this type of sling shot before that holds the amo in the handle? http://www.liangdianup.com/sporting_1.htm
this company has free shipping to anywhere in the world and they guarantee delivery to Australia. I heard that sling shots
are ok to sell in Australia as long as you say they are being used to toss bait in the water when you go fishing, any truth
to thatone?

This is not the first time that this subject and this particular mail order company in China has been mentioned.

Last time it was alice123 that asked a similar question on 25 Aug 2008.

www.huntingnut.com/ind...=slingshot

The wording of this post is very similar in content and manner of writing that it leads me think that maybe it is the same person that wrote both posts.

This post is also WAY OFF TOPIC. It should be in the Primitive Weapons Threads.

hdmyg85...before you purchase a slingshot, check with Australian Customs as you may need an import permit to get it into the country. Sure, this Mail Order company says that they will guarantee delivery to Australia, but they don't say that they will guarantee that it will be passed by our Customs Service. Do your homework.

Cheers, Vince

lesterg3 · Posted: Fri Jan 02, 2009 2:50 pm Post subject: Re: 100gr .243 win prob

Thanks Vince,

I had read the OCW once before and then handloader mentioned the 90% full rate that he tries to achieve, that was the purpose of the question. I intend to use the OCW when I am finally set up for reloading. That is if Miz Dee ever lets me get to it.

Vince · Posted: Fri Jan 02, 2009 6:00 pm Post subject: Re: 100gr .243 win prob

No problems Lester.

Miz Dee ?? Oh, you mean She Who Must Be Obeyed...GOC Home Command.

I have tried 100gr bullets in my .243 but decided to drop back to 85gr Remington SP. They hit pretty much as hard, are more accurate and are cheaper. Give it a bit of thought to drop back in bullet weight, just a little, if you have difficulty getting them to group nice and tight.

Cheers, Vince

chambered221 · Posted: Sat Jan 03, 2009 10:39 am Post subject: Re: 100gr .243 win prob

Some .243 bullets to consider if looking for new ones for deer sized animals. ( with a little less weight )

Nosler 90 and 95gr. Ballistic tips, rapid expansion, will penetrate more than you would think in .243, stay off the shoulder.
Nosler 85gr. Partitions, will exit on a shoulder shot, jackets will sometimes separate.
Hornady 95gr. SST’s a lot like a ballistic tip but will not blow on the shoulder, very destructive.
Sierra 85gr. HPBT Gameking often overlooked non-premium bullet, will get the job done.
Barnes 85gr. TSX BT and 80gr. Tipped TSX BT
The expensive way, said to hit more like a 100gr. bullet, they expand rapidly, but drive right through bone, retains nearly all of its weight, dumps a large amount of its energy through out the entire wound channel.

I was wanting to use the tipped TSX’s in 6MM Remington and 7MM08 this past season but was unable to do so. Hopefully next season

T/Cshooter · Posted: Sat Jan 03, 2009 3:20 pm Post subject: Re: 100gr .243 win prob

I too am trying to work up a 243 load for a 100gr sierra spitzer boatail, but for a TC pistol w/15" barrel.
I'm considering IMR-3031 and between 32 and 25.5 gr of powder... If'n anyone has experience with this combo, I'd appreciate a reply otherwise, I'll let you know what I find out...

later..

SingleShotLover · Posted: Sat Jan 03, 2009 5:04 pm Post subject: Re: 100gr .243 win prob

Don't get too discouraged. One of the reasons that I tend to avoid the .243 is that it seems that you either have one that will happily digest most anything or you have one that is picky. This is not a criticism of the .243 as an excellent cartridge...just an observation. One of the most brilliantly accurate rifle I have ever owned was a .243, but so was the worst one.

With the choices of powder and bullets we have today, the right combination is out there; you just have to find it.

Best of luck to you.

vint2 · Posted: Sat Jan 03, 2009 8:43 pm Post subject: Re: 100gr .243 win prob

OK,guys, I have question for all you ballistics afficianados out there!! How much change in velocity, in fps,is needed for any given load to see a noticeable change on point of impact at say 200 yards??? Any help will be greatly appreciated!!
John

Pumpkinslinger · Posted: Sat Jan 03, 2009 9:01 pm Post subject: Re: 100gr .243 win prob

Vint, I would say it would take a lot of change but how about a little more info. What cartridge/bullet are we talking about? What distance is the rifle zeroed at?

vint2 · Posted: Sat Jan 03, 2009 9:07 pm Post subject: Re: 100gr .243 win prob

Mike,
I am zeroed at 200 with my Knight Shadow 50 cal ml using 100 gr 209 and 250 gr bullet.

lesterg3 · Posted: Sat Jan 03, 2009 9:07 pm Post subject: Re: 100gr .243 win prob

This looks like it will answer your questions, I am having trouble opening it because I have Vista, but it might work for you. The page I found this on was asking the same question and this helped the guy who used it.

www.cs.utah.edu/~zacha...annon.html

lesterg3 · Posted: Sat Jan 03, 2009 9:15 pm Post subject: Re: 100gr .243 win prob

OK, so your using a muzzle loader I found this out there on, www.chuckhawks.com/impact_myth.htm

Hope it helps.

Muzzleloading's Point of Impact Myth

By Randy Wakeman

Often, you'll hear folks fret and stammer about a "point of impact shift" in muzzleloading, attributed to everything from recoil pads to a change in the rotation of the earth. Velocity does affect point of impact, but with most muzzleloading big game animals still taken in relatively intimate conditions (50 yards or so), the point of impact due to muzzle velocity changes is not as dramatic as you might think. If we miss our deer, we are better off finding something else to blame it on. Here's why.

For an example, I'll suggest a Barnes 245 grain Spitfire at 2000 fps sighted in for a 5 inch kill zone across that load's Maximum Point Blank Range. Using both a standard atmosphere and the published static Barnes ballistic coefficient of .203, that places our bullet 2.40 inches high at 100 yards.

So, let's slow that bullet way down, far lower than we would tolerate by a shot-to-shot velocity deviation: by 200 fps, to 1800 fps muzzle velocity. Changing nothing else at all, not a single parameter except for muzzle velocity, our bullet now hits 3.15 inches high at 100 yards. No deer can live on the difference.

Now let's speed that bullet up, to 2200 fps at the muzzle, changing nothing else. Our bullet now hits 1.94 inches high at 100 yards, using that 2200 fps muzzle velocity. We have a severe muzzle velocity spread of 400 fps, something few of us would knowingly tolerate. Yet, the total effect on trajectory at 100 yards is only 1.21 inches.

Out to 150 yards, there is nothing there to be frantic about. Our 1800 fps MV load hits -0.11 inch at 150 yards. Our 2000 fps MV load hits -0.08 inch at 150 yards. And, our speedy 2200 fps load impacts at -0.07 inches. The maximum change in point of impact at 150 yards is a stunningly small FORTY THOUSANDTHS OF ONE INCH!

Maybe Maxwell Smart could miss it by "that much," but I've never heard of anyone who has claimed to miss a clean kill on a big game animal by .040 in. Have you? At 150 yards or less, point of impact changes due to a slight muzzle velocity variation are simply nothing to fester about. I don't think that even "Uncle Fester" could manage.