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10-02-2020, 03:48 AM
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Join Date: Jan 2008
Location: Edmonton, AB
Posts: 16,992
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Mid 90's Rem700 300win mag twist rate?
Would it be safe to say the mentioned rifle has a 1:12 twist rate?
That being said, if it is a 1:12, curious if shooting various 180gr projectiles average to good, it would generally shoot a lighter bullet
like a 165 even better? You would need a faster twist rate to shoot heavier 30cal bullets like a 200gr?
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Alberta Bigbore
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10-02-2020, 04:13 AM
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Join Date: May 2007
Location: Calgary
Posts: 7,524
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I think the twist rate is probably 1:10
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10-02-2020, 05:25 AM
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Join Date: Feb 2013
Location: Edmonton/San Tan Valley,Arizona
Posts: 850
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Its easy to check. The cleaning rod method works well. Easy to find by search. That way you will know for sure.
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10-02-2020, 07:51 AM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,685
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I have shot 180's out of 1:12 twist rifles before with no issues and accurately too, but the 300 is normally a 1:10 twist I think .
If it is a 1:12 it will shoot 165's very well but not automatically better than a 180.
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't! 
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10-02-2020, 08:02 AM
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Join Date: Jan 2008
Location: Edmonton, AB
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I have been playing with a bunch of 180gr factory loads, some are good some r bad groupers. Did some reading on faster twist stabilizing heavier bullets. Amd was wondering if i should give the Hornady ELD-X 200grains a try
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Alberta Bigbore
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10-02-2020, 08:09 AM
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Join Date: Jun 2007
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Quote:
Originally Posted by Alberta Bigbore
I have been playing with a bunch of 180gr factory loads, some are good some r bad groupers. Did some reading on faster twist stabilizing heavier bullets. Amd was wondering if i should give the Hornady ELD-X 200grains a try
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That has more to do with the bullet design than anything .
I had a M70 match 308 rifle (1:12)I just sold that would not shot 150 SST's worth beans (4" at 100 was the best ) but it shoots 165 ELDM's superbly .
Generally however a faster twist will stabilize a longer bullet better than a slower twist .
Pretty sure your 300 is 1:10 though
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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10-02-2020, 08:14 AM
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Join Date: Dec 2011
Location: East Kootenays, BC
Posts: 1,178
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My Rem 300 is mid 90's as well. Twist is 1-10". Mine shot Federal blue box 180's quite well but I will never use them for hunting again ( long story). Old Rem 180 Corelokt shot well too.
Handloads: Barnes 180 TTSX with RL 22 or 26 gets me three shot groups in the 0.4" range. My rifle did not like Nosler anything.
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10-02-2020, 10:04 AM
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Join Date: Nov 2008
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I cannot see a 1 in 12, that would defeat the purpose of magnum. Makes no sense.
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Thomas Sowell
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10-02-2020, 10:06 AM
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Join Date: Jun 2011
Posts: 582
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This may help
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"This year will go down in history. For the first time, a civilized nation has full gun registration. Our streets will be safer, our police more efficient, and the world will follow our lead into the future!" 1935-Adolf Hitler
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10-02-2020, 10:45 AM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,500
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Quote:
Originally Posted by pikergolf
I cannot see a 1 in 12, that would defeat the purpose of magnum. Makes no sense.
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Actually Lazzeroni used a 1 in 12" twist in rifles chambered for their Warbird cartridge. A slower rate of twist allows slightly more velocity, although it limits the length of bullet that can be stabilized.
https://www.lazzeroni.com/assets/ima...8)-Warbird.pdf
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Only accurate guns are interesting.
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10-02-2020, 11:15 AM
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Quote:
Originally Posted by elkhunter11
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I'm probably wrong, but I have a hard time wrapping my head around a 1 in 12 being able to stabilize a 200 or 220 bullet, even at those velocities. Those suckers are long.
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“One of the sad signs of our times is that we have demonized those who produce, subsidized those who refuse to produce, and canonized those who complain.”
Thomas Sowell
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10-02-2020, 11:29 AM
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Join Date: Dec 2008
Location: Camrose
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Quote:
Originally Posted by pikergolf
I'm probably wrong, but I have a hard time wrapping my head around a 1 in 12 being able to stabilize a 200 or 220 bullet, even at those velocities. Those suckers are long.
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If the bullets are shorter flat based bullets, they will stabilize in a slower twist. The bullet length is more important than the bullet weight.
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Only accurate guns are interesting.
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10-02-2020, 02:32 PM
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Join Date: Jun 2007
Location: Ft. McMurray
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Quote:
Originally Posted by pikergolf
I'm probably wrong, but I have a hard time wrapping my head around a 1 in 12 being able to stabilize a 200 or 220 bullet, even at those velocities. Those suckers are long.
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Berger's twist calculator says a 1:12 is optimal for their 200 grain bullets and those are long suckers!
I shoot 178's and 198's in my 1:12 308-F/O rifle at 1,000 and they shoot amazingly.
Cat
__________________
Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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10-02-2020, 05:49 PM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,685
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Quote:
Originally Posted by pikergolf
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Ballistic coefficient , sectional density , mass and caliber all have to be taken into account when it comes to twist rate .
My 6mm BR has an 8 twist to stabilize 108 grain bullets as does my 6.5 Creedmoor .
However my 9 twist .223 has a tough time accuracy wise with 90 grain bullets but does okay with 70's
Cat
__________________
Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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10-02-2020, 05:51 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,500
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Quote:
Originally Posted by pikergolf
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You are comparing bullets of different caliber and weight, your comparison isn't valid.
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Only accurate guns are interesting.
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10-02-2020, 06:00 PM
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Join Date: Nov 2008
Posts: 11,471
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Quote:
Originally Posted by elkhunter11
You are comparing bullets of different caliber and weight, your comparison isn't valid.
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I am just going by visuals. The Berger is longer per diameter and has a higher Ballistic coefficient. I am honestly trying to understand. The German in me wants an explanation I can understand.
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“One of the sad signs of our times is that we have demonized those who produce, subsidized those who refuse to produce, and canonized those who complain.”
Thomas Sowell
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10-02-2020, 06:00 PM
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Join Date: May 2007
Location: Dreadful Valley
Posts: 14,658
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Quote:
Originally Posted by pikergolf
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Read, Hatchers Notebook.
By, Jullian Hatcher.
Look up the Greenhill formula.
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There are no absolutes
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10-02-2020, 06:19 PM
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Join Date: Nov 2008
Posts: 11,471
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Quote:
Originally Posted by Dick284
Read, Hatchers Notebook.
By, Jullian Hatcher.
Look up the Greenhill formula.
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I will.
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“One of the sad signs of our times is that we have demonized those who produce, subsidized those who refuse to produce, and canonized those who complain.”
Thomas Sowell
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10-02-2020, 09:53 PM
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Join Date: Jul 2010
Location: Edmonton
Posts: 11,884
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Quote:
Originally Posted by pikergolf
I am just going by visuals. The Berger is longer per diameter and has a higher Ballistic coefficient. I am honestly trying to understand. The German in me wants an explanation I can understand.
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Darn Germans !!!! 
I'm also creeping this threads and genuinely interested in exactly what you are asking here .....
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10-03-2020, 06:00 AM
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Join Date: Jan 2008
Location: Edmonton, AB
Posts: 16,992
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Found its a 1:10 in my rem700 LSS 300win mag.
Not currently reloading . But have tried various 180gr factories with results all over the charts lol some bad.. some really good with some inconsistencies.
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Alberta Bigbore
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10-04-2020, 03:36 PM
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Join Date: Oct 2007
Location: Cowtown, agian
Posts: 2,814
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Quote:
Originally Posted by Alberta Bigbore
Found its a 1:10 in my rem700 LSS 300win mag.
Not currently reloading . But have tried various 180gr factories with results all over the charts lol some bad.. some really good with some inconsistencies.
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Take care of the bedding, trigger and optic setup before expecting consistency.
Bullet weight doesn't matter much. It's the entire package (primer, powder, brass and bullet) and how it's constructed. Change one of those things and it changes everything.
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