The Accurate Reloading Forums
What twist rate for a 264 Wmag
17 July 2011, 05:36
ramrod340What twist rate for a 264 Wmag
Let me ask the question by itself. If you were building a 264Wmag and planned to shoot 130Accubonds or shorter what would be your twist choice. I'm going with a Douglas so 8.5" isn't an option. <img src="https://forums.accuratereloading.com/groupee_common/emoticons/icon_biggrin.gif" alt="Big Grin" width="15" height="15"><!--graemlin::D-->What twist rate???1 in 8"1 in 9"Other
As usual just my $.02
Paul K
17 July 2011, 07:32
LuckyduckerEither twist should probably stablize the 130AB's but if you will ever want to shoot a heavier bullet you will be doomed with the 1/9". If it were me I would get the 1/8" and never look back. From my limited experience, I would err on the side of too fast than too slow, because you can make a fast twist shoot shorter/lighter bullets but you can never make a slow twist work for the longer/heavier bullets.
Dennis
Life member NRA
17 July 2011, 08:36
Cary HowardI agree with Dennis!!!!
17 July 2011, 23:55
vapodogI voted for the 1-9", however as we see the increase of popularity of all-copper bullets there is increasing reason to twist the bullets a bit faster. Further There is little reason to not twist a bit faster anyway as additional RPMs do not adversely affect the hunting bullets and the varmint bullets aren't the norm in the .264. While there's always a first time
, I've never heard of a .264 bullet blowing up due to RPMs! as is seen at times with .224 diameter bullets.
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18 July 2011, 00:36
bartschequote:
Originally posted by vapodog:
I voted for the 1-9", however as we see the increase of popularity of all-copper bullets there is increasing reason to twist the bullets a bit faster. Further There is little reason to not twist a bit faster anyway as additional RPMs do not adversely affect the hunting bullets and the varmint bullets aren't the norm in the .264. While there's always a first time
, I've never heard of a .264 bullet blowing up due to RPMs! as is seen at times with .224 diameter bullets.
My 6.5X.284, 1966, all bullets of that time 140 grains and under. The only bullets that didn't turn into powder where 160 and 156gr. Barnes, 160 grain Hornady and Norma.It was a rechambered Arasaka, 29 1/2" barrel with an unusual high chrome content and a FAST twist.
At 25 yds. nothing but dust!!!
Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..
18 July 2011, 00:45
ramrod340quote:
however as we see the increase of popularity of all-copper bullets there is increasing reason to twist the bullets a bit faster
Hmmmm 5 to 5. Same way my mind is working. It is an excellent point on the non-lead bullets. However based on the number of 130 Accubonds I have on hand I might need a new barrel before i switch bullets. (Dang I hope it shoots them
)
As usual just my $.02
Paul K
18 July 2011, 03:09
264 Win MagI picked 1 in 8" for mine just in case I wanted to shoot the heaver stuff. I have only used the 125gr Partition so far and the gun is scary accurate. Seems like someone used to or still does make a 160gr bullet and I would like to get some of them for a test
My 1 in 9" 1965 Factory 24" Remington 700 ADL shoots 140 Woodleighs and 129 SST's just fine so if you really are going to just shoot 130 Accubonds then a 1 in 9" will work.
This is a great cartridge and one of my favourites for hunting. It is capable of superb performance on appropriate game due to it's flat trajectory and retained impact velocity.
18 July 2011, 05:13
RaySenderoquote:
Originally posted by ramrod340:
Let me ask the question by itself. If you were building a 264Wmag and planned to shoot 130Accubonds or shorter what would be your twist choice. I'm going with a Douglas so 8.5" isn't an option.
ramrod,
I'm seeing a 0.264" 130 AB spitzer as 1.32" long. If I run this length through the old Greenhill formula it calculates you will need a twist of 9.5 to 1 or faster - So either the 1:8 or 1:9 will be OK.
It also shows the 1.368" 140 AB will be also be OK from either twist. Looks like 1.400" bullets is the break point - If you ever plan to use one longer than 1.400", I'd go with the 1:8.
________
Ray
18 July 2011, 05:28
vapodogquote:
Originally posted by 264 Win Mag:
Seems like someone used to or still does make a 160gr bullet and I would like to get some of them for a test
It's a round nose and is actually shorter than the 140 spire point. The 160 RN is made by Hornady but might also be available from Woodleigh!....check with midway-usa
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"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill
Woodleigh make a 160 PPSN length 1.381". Hornady a 160 RNSP and Sierra used to make a 160 RNSP. (Still have a box in the shed) Hope this helps.
19 July 2011, 00:15
duckboatI'd choose the 1-9 twist even if you plan on shooting 140s. I've had two 264s and both had the 1-9 twist. Both had no problem with the heavier bullets. I think the only thing the faster twist rate buys you is increased pressure.
19 July 2011, 02:52
264 Win MagVapodog & Code4 thanks for the info. I will have to add a box of one of those to my next Midway order.
19 July 2011, 08:40
bartsche
I may be wrong but it seems the last I checked the Hornady 6.5mm 160 grain bullet is only made now in .268" Dia.
Had to settle on 156grain semi RN ,Norma.
roger
Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..
19 July 2011, 09:24
ramrod340quote:
I may be wrong but it seems the last I checked the Hornady 6.5mm 160 grain bullet is only made now in .268" Dia
They still list them
http://www.hornady.com/store/6.5mm-.264-160-gr-RN/Grafs has both.
http://www.grafs.com/retail/ca...orm_process%22%3B%7D
As usual just my $.02
Paul K
20 July 2011, 23:21
SaskguyI think Duckboat might be on to something, my next barrel will be a 1-9 twist just to see.
21 July 2011, 04:30
bartschequote:
Originally posted by ramrod340:
quote:
I may be wrong but it seems the last I checked the Hornady 6.5mm 160 grain bullet is only made now in .268" Dia
They still list them
http://www.hornady.com/store/6.5mm-.264-160-gr-RN/Grafs has both.
http://www.grafs.com/retail/ca...orm_process%22%3B%7D
What you say is correct but so far I have not found any locally or at Graf's or any where else. I do ,however, hope Hornady, who I will call again,does still make them.
roger
Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..
21 July 2011, 04:44
ramrod340quote:
I have not found any locally or at Graf's or any where else
You are correct I misread the Grafs site.
Midway lists them as in stock.
http://www.midwayusa.com/viewP...productNumber=744461
As usual just my $.02
Paul K
21 July 2011, 15:10
tom hollandquote:
Originally posted by ramrod340:
Let me ask the question by itself. If you were building a 264Wmag and planned to shoot 130Accubonds or shorter what would be your twist choice. I'm going with a Douglas so 8.5" isn't an option.
Well going with a 8.5 twist or 9.5 may be what you get from Douglas if you read their fine print.
"Our twists are at the whole inch (i.e. 9,10,11, etc.) and tolerance is plus or minus 1/2"."
VFW
21 July 2011, 20:44
ramrod340quote:
Well going with a 8.5 twist or 9.5 may be what you get from Douglas if you read their fine print.
"Our twists are at the whole inch (i.e. 9,10,11, etc.) and tolerance is plus or minus 1/2"."
What the heck. I had made my decision on a 9 and you had to go and muddy the water.
As usual just my $.02
Paul K
22 July 2011, 02:57
tom hollandquote:
Originally posted by ramrod340:
quote:
Well going with a 8.5 twist or 9.5 may be what you get from Douglas if you read their fine print.
"Our twists are at the whole inch (i.e. 9,10,11, etc.) and tolerance is plus or minus 1/2"."
What the heck. I had made my decision on a 9 and you had to go and muddy the water.
Well if your interested I've got a Kreiger #4 SS with a 1/8.5 twist that I'd let you have for #275 it's at my gunsmith. I'm just north of the Springs and we could meet 1/2 way ed just PM if interested.
VFW
22 July 2011, 03:33
ramrod340Tom thanks for the offer but wanted to stay with CM so I could just have everything blued.
As usual just my $.02
Paul K
22 July 2011, 08:35
BarstoolerMy 6.5-06 wears a 1:9 twist barrel and has absolutely no problems with 140gr bullets of any type.
I normally shoot the 129gr Hornady Interlock, but have sent a bunch of Nosler and Sierra 140grs down range with it.
p.s. If I want to shoot heavier bullets than 140grs, I go to my 270 Win. And if I want to go lighter than 120grs I go to my 25-06
Barstooler
