How the .243 stacks up
06-01-2005, 06:28 PM
#11
Nontypical Buck
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Join Date: Nov 2003
Location: Texas
Posts: 2,695
RE: How the .243 stacks up
ORIGINAL: James B
There are many other 7mm"s besides the Magnum's. The 7x57 Mauser and 7MM-08 very clearly fit in the tables above. You need to add in Momentum and bullet frontal area to complete the camparison. This because Momentum and bullet weight and sectional density are as important to energy as velocity is. This will also determine the penetration. However as far as you went it looks ok.
There are many other 7mm"s besides the Magnum's. The 7x57 Mauser and 7MM-08 very clearly fit in the tables above. You need to add in Momentum and bullet frontal area to complete the camparison. This because Momentum and bullet weight and sectional density are as important to energy as velocity is. This will also determine the penetration. However as far as you went it looks ok.
LOL!
No but really, I dont buy into the momentum theory's they are designed to give big bullets better numbers which is bunk. A muzzle loader with a 400 gr bullet will have a bigger momentum number than a 300 mag. I call Bull$hit on that
06-01-2005, 06:38 PM
#12
Nontypical Buck
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Join Date: Nov 2003
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RE: How the .243 stacks up
ORIGINAL: popeye
I just don't see what is so great about a 243. A 100gr bullet at 2900fps is not fast by modern standards. The 243 isn't even the fastest 6mm on the market. The 6mm Rem will push a 100gr bullet over 3000fps so I guess that means that it's a little better than the now sainted 243. I'm sure some Weatherby guy has a 240 Wby that probably pushes or passes the 3400fps mark.
Numbers from a ballistic chart, wether its fps, sd, bc or any other number you want to use is only a starting point. All of them plus the shooters ability to place the bullet on target are required to have success. A person needs first hand experiance and confidence in want he uses to be an effective hunter.
If speed alone is the greatest measure of effectiveness then why doesn't everyone use a 240 Weatherby or a 220 Swift since nothing bigger than a 6mm bullet should be used for deer hunting.
I just don't see what is so great about a 243. A 100gr bullet at 2900fps is not fast by modern standards. The 243 isn't even the fastest 6mm on the market. The 6mm Rem will push a 100gr bullet over 3000fps so I guess that means that it's a little better than the now sainted 243. I'm sure some Weatherby guy has a 240 Wby that probably pushes or passes the 3400fps mark.
Numbers from a ballistic chart, wether its fps, sd, bc or any other number you want to use is only a starting point. All of them plus the shooters ability to place the bullet on target are required to have success. A person needs first hand experiance and confidence in want he uses to be an effective hunter.
If speed alone is the greatest measure of effectiveness then why doesn't everyone use a 240 Weatherby or a 220 Swift since nothing bigger than a 6mm bullet should be used for deer hunting.
Speed alone is not the ticket. I agree on this. But a given projectile will have more killing power the faster you push it.
06-01-2005, 07:38 PM
#13
Join Date: May 2004
Location: SW Virginia
Posts: 776
RE: How the .243 stacks up
ORIGINAL: zrexpilot
Heres a sectional density and bullet coefficiency comparo
Sierra gamekings...............SD....................Coef f.
.243,100gr.SBT..................242............... .......430
.257,117 gr.SBT.................253......................41 0
6.5, 140gr.SBT...................287................... ...495
7mm, 140gr SBT................248......................416
270,130gr.SBT...................242............... .......436
.308,150gr.SBT..................226............... .......380
Dont see a penetration issue some of you claim the .243 lacks, given the speed and these numbers. I see a comparable gun to any cartridge. better than some when you take ballistics into account.Ya I'm bored, nothing else to do than talk about guns, since hunting season is a ways off.
Heres a sectional density and bullet coefficiency comparo
Sierra gamekings...............SD....................Coef f.
.243,100gr.SBT..................242............... .......430
.257,117 gr.SBT.................253......................41 0
6.5, 140gr.SBT...................287................... ...495
7mm, 140gr SBT................248......................416
270,130gr.SBT...................242............... .......436
.308,150gr.SBT..................226............... .......380
Dont see a penetration issue some of you claim the .243 lacks, given the speed and these numbers. I see a comparable gun to any cartridge. better than some when you take ballistics into account.Ya I'm bored, nothing else to do than talk about guns, since hunting season is a ways off.
Sierra GameKings:
.308 165gr.SBT ..................... 248 ....................... 404
.358 225gr.SBT ..................... 251 ....................... 384
Hornady: ..................................SD.............. ...........BC
25cal., 117gr.SST ................... 253 ....................... 390
6.5 cal., 129gr.SST ................. 264 ....................... 485
270 cal., 130gr.SST ................ 242 ....................... 460
140gr.SST ....................... 261 .............................. 495
7mm, 139gr. SST ................... 246 ....................... 486
154gr. SST .........................273 .............................525
30cal., 165gr.SST ................... 248 ....................... 447
.338, 225gr. SST .................... 281 ........................430
06-01-2005, 08:07 PM
#14
Nontypical Buck
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Join Date: Nov 2003
Location: Texas
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RE: How the .243 stacks up
ORIGINAL: Virginia7
Better? You need to look again, and maybe check out some besides "gamekings":
Sierra GameKings:
.308 165gr.SBT ..................... 248 ....................... 404
.358 225gr.SBT ..................... 251 ....................... 384
Hornady: ..................................SD.............. ...........BC
25cal., 117gr.SST ................... 253 ....................... 390
6.5 cal., 129gr.SST ................. 264 ....................... 485
270 cal., 130gr.SST ................ 242 ....................... 460
140gr.SST ....................... 261 .............................. 495
7mm, 139gr. SST ................... 246 ....................... 486
154gr. SST .........................273 .............................525
30cal., 165gr.SST ................... 248 ....................... 447
.338, 225gr. SST .................... 281 ........................430
ORIGINAL: zrexpilot
Heres a sectional density and bullet coefficiency comparo
Sierra gamekings...............SD....................Coef f.
.243,100gr.SBT..................242............... .......430
.257,117 gr.SBT.................253......................41 0
6.5, 140gr.SBT...................287................... ...495
7mm, 140gr SBT................248......................416
270,130gr.SBT...................242............... .......436
.308,150gr.SBT..................226............... .......380
Dont see a penetration issue some of you claim the .243 lacks, given the speed and these numbers. I see a comparable gun to any cartridge. better than some when you take ballistics into account.Ya I'm bored, nothing else to do than talk about guns, since hunting season is a ways off.
Heres a sectional density and bullet coefficiency comparo
Sierra gamekings...............SD....................Coef f.
.243,100gr.SBT..................242............... .......430
.257,117 gr.SBT.................253......................41 0
6.5, 140gr.SBT...................287................... ...495
7mm, 140gr SBT................248......................416
270,130gr.SBT...................242............... .......436
.308,150gr.SBT..................226............... .......380
Dont see a penetration issue some of you claim the .243 lacks, given the speed and these numbers. I see a comparable gun to any cartridge. better than some when you take ballistics into account.Ya I'm bored, nothing else to do than talk about guns, since hunting season is a ways off.
Sierra GameKings:
.308 165gr.SBT ..................... 248 ....................... 404
.358 225gr.SBT ..................... 251 ....................... 384
Hornady: ..................................SD.............. ...........BC
25cal., 117gr.SST ................... 253 ....................... 390
6.5 cal., 129gr.SST ................. 264 ....................... 485
270 cal., 130gr.SST ................ 242 ....................... 460
140gr.SST ....................... 261 .............................. 495
7mm, 139gr. SST ................... 246 ....................... 486
154gr. SST .........................273 .............................525
30cal., 165gr.SST ................... 248 ....................... 447
.338, 225gr. SST .................... 281 ........................430
I guess you didnt read this part earlier in the post.
zrexpilot
I also am not including 160 or 180 gr bullets as I feel these are getting in the big game category's. This is medium game comparo.
I also am not including 160 or 180 gr bullets as I feel these are getting in the big game category's. This is medium game comparo.
Sad thing is some of those big bullets only have a slightly better SD but are still behind in BC
And i said better when you take balistics into account.
06-01-2005, 08:17 PM
#15
Nontypical Buck
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Join Date: Nov 2003
Location: Texas
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RE: How the .243 stacks up
why didnt you include the .243 105 gr in your comparo
Hornady: ..................................SD.............. ...........BC
243 105 gr...............................254.............. ...........500
25cal., 117gr.SST ................... 253 ....................... 390
6.5 cal., 129gr.SST ................. 264 ....................... 485
270 cal., 130gr.SST ................ 242 ....................... 460
140gr.SST ....................... 261 .............................. 495
7mm, 139gr. SST ................... 246 ....................... 486
154gr. SST .............................273 .......................525
30cal., 165gr.SST ................... 248 ....................... 447
.338, 225gr. SST .................... 281 ........................430
Hornady: ..................................SD.............. ...........BC
243 105 gr...............................254.............. ...........500
25cal., 117gr.SST ................... 253 ....................... 390
6.5 cal., 129gr.SST ................. 264 ....................... 485
270 cal., 130gr.SST ................ 242 ....................... 460
140gr.SST ....................... 261 .............................. 495
7mm, 139gr. SST ................... 246 ....................... 486
154gr. SST .............................273 .......................525
30cal., 165gr.SST ................... 248 ....................... 447
.338, 225gr. SST .................... 281 ........................430
06-01-2005, 08:25 PM
#16
Join Date: May 2004
Location: SW Virginia
Posts: 776
RE: How the .243 stacks up
why didnt you include the .243 105 gr in your comparo
Hornady: ..................................SD.............. ...........BC
243 105 gr...............................254.............. ...........500
Hornady: ..................................SD.............. ...........BC
243 105 gr...............................254.............. ...........500
Oh, BTW, 30cal. 165gr. bullets are quite useful for medium game.
And, though the BC may not be as good, I'd much prefer to throw a 225gr. chunk of lead into a deer vs. a little 100gr. 6mm bullet.
06-01-2005, 09:05 PM
#18
Nontypical Buck
Join Date: Jan 2004
Location: Baileysville, WV
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RE: How the .243 stacks up
Hehehehe This place gets funnier everytime I click on it! SPEED!!! ITS SPEED MAN!!!! NOTHING ELSE MATTERS!!! ITS SPEED THAT SETS THAT CHARGING 1500 POUND GRIZ ON HIS A**!!! SPEED MAN!! GET IT STRAIGHT!!!
06-01-2005, 09:07 PM
#19
Join Date: May 2004
Location: SW Virginia
Posts: 776
RE: How the .243 stacks up
ORIGINAL: Doe Dumper
Hehehehe This place gets funnier everytime I click on it! SPEED!!! ITS SPEED MAN!!!! NOTHING ELSE MATTERS!!! ITS SPEED THAT SETS THAT CHARGING 1500 POUND GRIZ ON HIS A**!!! SPEED MAN!! GET IT STRAIGHT!!!
Hehehehe This place gets funnier everytime I click on it! SPEED!!! ITS SPEED MAN!!!! NOTHING ELSE MATTERS!!! ITS SPEED THAT SETS THAT CHARGING 1500 POUND GRIZ ON HIS A**!!! SPEED MAN!! GET IT STRAIGHT!!!
06-01-2005, 09:10 PM
#20
Join Date: May 2004
Location: SW Virginia
Posts: 776
RE: How the .243 stacks up
ORIGINAL: Gundigest
I do most of my deer hunting with a 7x57 Mauser and it is an excellent cartridge for medium sized game.
I do most of my deer hunting with a 7x57 Mauser and it is an excellent cartridge for medium sized game.
Wish Ruger was still making 'em.