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Campfire 'Bwana
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Campfire 'Bwana
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I'm going to be ordering a Kreiger heavy sporter in CM to screw on a Kimber Custom Select [currently chambered in .270Win] to convert it to .35 Whelen. Traditionally these are rifled with a 1:16 twist, but I'm thinking I want a 1:14, perhaps 1:12. My intended load will be with 225gr Nosler AccuBonds, with a bailout plan on running PT's or ??? in a similar weight. Estimated MV is 2700-2800 fps, but I may loose a few fps as I also want to trim the barrel at 22" or 22.5".
Question is, should I stay with the traditional twist rate or tweak it a little and speed it up. What is the real world difference in doing so?
Thank you in advance for any help! 12 twist for certain.....  That 16 business went in the trash with high button shoes. You have better balanced,and tougher bullets today. Probably not a need for anything over 225 gr bullets for anything on the continent. Might as well get the 12 twist and churn over those great tough bullets like the NF's and Barnes,and help them expand. Had a 12 twist on a 358 STA,which is a whole lot faster than a Whelen. It was very accurate.If building a Whelen myself it would be a 12 twist no doubt.
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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I left the twist up to Benchmark Barrels with mine - I told told them I was shooting 250 grain partitions at 2450 fps and it came back with a 1/12" twist. It works great.
Last edited by whitebread; 12/17/15.
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Joined: Jan 2001
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Campfire Ranger
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Campfire Ranger
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I went 1:12 at 22" and am very happy.
I shoot 250 gr Hornady Interlocks and 250 gr Nosler Partitions.
Lost interest in deer hunting so haven't killed anything with it yet after all of these years.
Mike
God, Family, and Country.
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With the older NBT and Sierra, yes. Never given the 225 NPT any thought. I have used the 250 NPT at 2550+ fps. In the Whelen I have now, I'm loading 61gr Rl-15 for 2580 fps with the 225 NPT. 62gr does 2650 but is too hot. The Sierra bullet needs a little more powder but tops out at the same speed. This is one of the reasons I disagree with the "pressure=velocity" theory. If I were to load this rifle to published velocity, I'd have some very dangerous loads. Edit - this is a factory Rem 700 tube with an AI chamber.
Last edited by Yondering; 12/17/15.
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My Rem 7600 gave 2675 fps with Sierra 225 BT, several powders--61 VV140, 57 IMR4064,55 Acc 2015.
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Campfire Ranger
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Is 3000fps possible with vv150 and 200's? By the numbers posted here it doesn't seem like it. I was told by a local Smith he was getting that in his 35 whelen AI.... The AI in the whelen would probably give you close to nothing over the vanilla whelen. I had very good accuracy with blc-2 and 225 Hornady's in mine but didn't chronograph the load yet, so no idea on velocity.
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Campfire Tracker
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Mine is an AI chamber (forgot to mention that above), but the difference is insignificant, other than using another grain or two of powder. I like the sharper shoulder, but that's about it's only benefit.
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In the Whelen I have now, I'm loading 61gr Rl-15 for 2580 fps with the 225 NPT. 62gr does 2650 but is too hot. The Sierra bullet needs a little more powder but tops out at the same speed.
This is one of the reasons I disagree with the "pressure=velocity" theory. If I were to load this rifle to published velocity, I'd have some very dangerous loads.
Edit - this is a factory Rem 700 tube with an AI chamber. My present Whelen takes 60 grains of RL-15 to make 2750+ with a 225 TSX and takes 58.5 of RL-15 with a 250 A-Frame for nearly 2600 fps. I've had similar experiences in other Whelens. Hard to know what's at work in your rifle, but it is what it is. My rifle is a 24 inch barrel with a 1:16 twist.
Suck bullets simply suck.
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Campfire Tracker
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I think some barrels just run slower I guess.
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I had a Winchester fwt rebored from 270 to 35W. I bet you have the barrel diameter to do it.
“Lighten up Francis”
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12 twist. Also, consider a rebore on such a nice gun. Everything factory perfect and quick turn around. Just a thought.
W I'll second this notion.
I never thought I'd grow up to be a grumpy old man, but I did, and I'm killin' it.
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Mine has Benchmark 1-9.5 twist. I couldn't be more pleased. It shoots 225 into about .6" groups. That includes Nosler Accubonds, Sierra's and Northfork's.
Have had 1-12 and 1-14. Much prefer the 9.5 especially if you use long heavy bullets or monos. The heavy Woodleigh really likes faster twists. If somebody gave me a 14 I would immediate get something faster.
Try Varget and use Nosler data.
“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”.
Antoine de Saint-Exupery. Posted by Brad.
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Campfire 'Bwana
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Campfire 'Bwana
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Mine has Benchmark 1-9.5 twist. I couldn't be more pleased. It shoots 225 into about .6" groups. That includes Nosler Accubonds, Sierra's and Northfork's.
Have had 1-12 and 1-14. Much prefer the 9.5 especially if you use long heavy bullets or monos. The heavy Woodleigh really likes faster twists. If somebody gave me a 14 I would immediate get something faster.
Try Varget and use Nosler data. There's Rick with the thoroughly modern Whelen....!
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Campfire Ranger
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I've got a 16 twist 35 Whelen and a 12 Twist 35 Newton. I do okay with 250 PTs and 225 ABs in the Whelen but the 12 Twist Newton is an animal with 250's. If I was rebarreling either I'd follow RinB's lead with the faster twist. No harm and only good could come from it.
Also RL15 has easily gotten me up over 2700 with 225's and right at 2600 with the 250's in the Whelen. My Whelens a plain old CDL with the 24" barrel.
Semper Fi
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OP
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Thanks for the great info fella's! I'm looking into a re-punch of the bore, and will definitely go faster twist wise given everyones experience.
Aim small, miss small.
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I would suggest you try either Varget or IMR 4320 with the 225 gr. Accubond or Partition. You should hit 2700 fps with a 22 inch barrel.
whelennut
I like to do my hunting BEFORE I pull the trigger!
There is only one kind of dead, but there are many different kinds of wounded.
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I have a 35 Whelen with a 1:12, a 35 Whelen AI 1:12 and a 358 STA with a 1:12, with 225 to 250 grain bullets they work great. All are 24" barrels.
************************************************
><}}> "A Government big enough to give you everything you want is big enough to take away everything you have" Thomas Jefferson <{{><
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My Whelen is a factory 700 Classic, 16 twist, and it shot the 275 grain Barnes originals as well as anything, though if I were ordering a new barrel a 12 twist would most likely get the nod.
You might think about your contour a bit though. My Classic has a standard sporter, and balances pretty well. A heavy sporter on a light gun like a Kimber might be too much of a good thing for you...
This is a shooting forum, there is no place here for logic.
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New Member
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I built my Whelen in 1966. It is 1903 Springfield with the original barrel rebored with 1:10 twist. It has a long throat and shoots 280gr and 300gr bullets easily. Consistently groups 5 shots inside an inch, and I predominately shoot old 250gr Speer spritzers through her.
Used IMR 4895 powder for years, but have switched to RL 15.
Built the stock myself. Has a Timney trigger. Had a new bolt put on it and it now mounts a Leupold V3 1.75 x 6 scope.
I like the faster twist.
Barstooler
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