300 wm twist rate

T

tatervaw123

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I am gonna re barrel my remington 700 sendero. It is a .300 wm and I didnt know what kind of twist rate to go with. I was looking to shoot the 190 gr smk but may also go with the 210 smk or the berger or 208 a max. I good shooter told me that he would go with the slowest twist to stabilize the bullet I am shooting. The barrel will more than likley be a 28 inch shilen barrel. Would also like to know what kind of barrel crown to go with.
 
For a match rifle with 210's I prefer and recommend 11" twist. In a hunting rifle that will be shot from field positions and possibly in very cold weather the slightly faster twist that Al recommends will cost you no practical accuracy and will prevent any possibility of bullet instability in high air density conditions. Take your pick according to your anticipated shooting environment.
 
twist rate

Thanks for the info. I may go with the 11 twist because the barrel will be 28 inch. That will give a little bit to gain MV. I was looking at a shilen maybe a lilja any suggestions about brand? Dont know about wait time either.
 
I have went with Bartlien,Krieger, and Rock Creek, Have had great results with all three. Wait time would not play into my equation, as I would want the best, and in my opinion they are the best! Good luck with your build.
 
I don't believe Shilen offers a .308 with an 11-twist.

The potential accuracy difference between an 11-twist and a 10-twist is quite small. You can't quantify it, because the entire difference is due to bullets having a center of mass different from their physical center. With perfect bullets, there would be no accuracy difference.

With typical benchrest-quality bullets, you're talking about an accuracy difference of about .010 inches at 200 yards. Insignificant for a hunting rifle.

But if you want to consider it, like Greg said, if it were me, and I planned to use the rifle when temperatures were below 40 degrees, or I wasn't shooting at sea level, I'd go with a ten-twist.
 
Thanks for all the help. Got a friend checking on a rock barrel. He also said with the way new metal and equipment are made (CNC, ect.) you cant go horribly wrong with any of these high level barrel brands. Most are just a person preference. Knowing that a 300 WM wont compete with the 6BR or calibers of that nature but I still would like to see how well I can get this rifle to work.Wont be shooting in any competitions just killing targets ect. For the price quoted by this gunsmith ($500) to rebarrel and bed the sendero it is cheaper than buying a new one with a stock barrel anyway. Thanks again!
 
Knowing that a 300 WM wont compete with the 6BR or calibers of that nature
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??? three-time IBS National Champion Danny Brooks might debate that one -- he shoots a .300 Win mag.

Some 1,000 yard records:

IBS heavy gun (10 shots) small group record was shot with a .300 Ackley (Joel Pendergraft). NBRSA heavy gun (10 shots) record (Dave Tooley) was fired with a .30 BooBoo -- essentially a .300 Win Mag without the belt. Pennsylvania HG Record and the current World Record (Matt Kline) was fired with a .300 Win Short mag.

IBS Light Gun group and score records (5 shots) were fired by Tom Sarver using a .30 Hulk. Tim Meyers HG Score record was fired with a .30, a .30 Hart, as I remember.

Mike Wilson's new IBS 10-Match Score agg record was fired with a .30. Lee Fishers two IBS agg records were fired with a .300 Ackley.

Etc.

There are probably some records held by 6mms somewhere, but at 1,000 yards, the .30s don't give up anything. Current fashion for 600 yards is the 6mm, but I think it's just that -- fashion.
 
What kind of groups can you expect from a 300 win mag stock 700 action, 28'' rock barrel and fully bedded hs precision stock with hand loaded ammo on a rest @ 1000 yrds under perfect conditions?
 
tatervaw123 said:
What kind of groups can you expect from a 300 win mag stock 700 action, 28'' rock barrel and fully bedded hs precision stock with hand loaded ammo on a rest @ 1000 yrds under perfect conditions?
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You're going to shoot a long time before you experience "perfect" conditions at 1000 yards. But if you can shoot the ocasional 6" group with a rebarreled Sendero at 1000 yards you'll have your ammo and gun handling working pretty well.
 
Well perfect conditions was all I could use because there are so many variations in shooting that distance. Only shot a 1000 yrd a few times and only with some friends didnt do great but will learn. Didnt know what to expect. 6 inch or 2 foot. Read somewhere that if you could shoot 1 inch or under at 300 yrds you may be in the ball park for 1000. like I said just getting into that distance can use all the help I can. From 100 to 1000! Thanks
 
Remember, Greg said the *occasional* 6-inch group. A more realistic goal might be to stay in single digits (less than 10 inches) when conditions aren't too bad. The 6-inch group will indeed be *occasional* -- it would put you in the middle of the pack competing against full blown 1,000 yard light guns on normal days.

If there are any 1,000 yard benchrest matches -- or F-class matches -- in your area, it might be worth your while to visit one. Even if you don't want to shoot formal matches, I'd bet you would learn a bit.

It would also be a good idea to get a few books, to counter all the "what some guy said" beliefs that just slow down the learning curve.

Good luck to you.
 
I would be lucky to get in a 24 inch group because of the shooter. When spring rolls around I will try to start going to some of the matches. As you said that will be where the knowledge will be and all the tricks of the trade. Plenty of time on the gun cant hurt either. Thanks for the help.
 
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