I have a chance to buy are rebarreled 240 Wby with a 1-14 twist. Any one like or dislike this combo?

I've never owned a 240Wby but did build my own 240PDK (think 240gibbs + 3 grs). The case is WAY overbore and I dropped mine and went to a basic 6mm. At max you can get 100-150fps over a max 243,6mm load. The case is about 22% greater capacity than the 243 for about 4% gain in velocity.

Key thing is the brass. Due to it being an 06 base with a rim you will need to use WBY brass.

I have a 6mm/.284, which is also over bore capacity for a .243" bore. But it has almost exactly the same capacity as the .240 Weatherby Magnum, which is to say about identical to a .30/'06 necked to 6mm. I am able to get 3300 FPS from 95 grain Nosler Partition bullets and over 3500 with the 85-grain Sierra HPBT from mine (26" Douglas Premium Grade bbl), using Norma MRP, and it is very accurate! If I were to do it again, I would still choose the 6mm/.284 over the 240 Weatherby, because it has no belt!

Both cartridges are hard on barrels! But there is nothing basically wrong with the .240 Weatherby, either.

the 1-14" twist would back me off quickly

1-10" would be a minimum I'd think.

I agree with Vapodog - A 1 in 14" twist strikes me as being an odd choice for a 240 Weatherby Magnum. Weatherby uses 1 in 10" on all of their factory models.

it would seem a real $$$ proposition, in terms of dies and brass. George Nonte is credited with the original cartridge design. He made up a set of four or five case swaging dies and gradually reduced the case OD and built up a belt. IIRC, he figured out he had about half an hour tied up in each case. That twist will limit you to about 70gr max weight bullets...it is what most 6PPC benchrest shooters use.

Rich
DRSS

I've actually never heard anything about the 240, good or bad. It is one of their least popular calibers, which always struck me as funny because it's a lightning bolt of a round. It's great for longer range varmints as well as deer/antelope with the 100gr bullets. I think the vastly more popular 257 has stolen a lot of its thunder, but it shouldn't be overlooked.

I already commented on the twist.....

about the cartridge.....I beleive it can be rechambered to 6-06 possibly by setting back a thread. I have one of these and can't really say it's better than the standard 6mm remington!

Have to agree with vapodog on the twist... Factory twist is 1 in 10...

Ken....

quote:

Originally posted by Heat:
Have to agree with vapodog on the twist... Factory twist is 1 in 10...

Ken....

I agree that 1/14" is way too slow. If I were building my 6mm/.284 today, I would use at least a 1/9" twist so bullets longer than 100 grains could be used.

The only reason for the HV these rounds deliver is to shoot at longer ranges, and that requires the best LR bullets you can get......

Terry-I've done a lot of work with a 6/06 a fair bit with a 240 and a fair bit with a 6/284.

That said, I would have no none notta interest in a 14 twist. Now if you could get the rifle at a cost you could still afford to retube it then I would consider it. But it would have to be cheap.

I can't imagine the use for a 14 twist, you may wanna insure that that is the right twist.

Good luck to ya.

Mark D

I haven't heard any about the 240 WBY, But the 257 WBY is a faster shooter. Just thought I throw that out.

We are going to forget the 240 Wby purchase, as that 1-14 twist is just not the answer to a fast 100 gr Deer load.

Mine is a 1 in 10 twist 6/284, and the loads and velocities posted by El Deguello are spot on for performance and accuracy. It is truly a specialty round.

I have a 240 wby on a Rem 700 action. Can't remember the twist, but think it's 1:10. It shoots 70-100 grain bullets very accurately. I have used for antelope & coyotes & it performs exceptionally well on both. I originally had it made for coyote. It certainly is not a cartridge to use if you are saving fur.
Brass is about $1 per, but so what you need 40-50 & that will last for years. I like it a lot. I have a 257 WBY as well. It has substantially more recoil.

Terry,

This hog was shot at 120 yds just below the ear w/240 Weatherby mag. Using a larger caliber and bullet it usually knocks them over. In this case He didn't flip over or even paddle. Just dropped and didn't move. Dead right there.
Flat shooting, very little recoil and MOA, what's not to like.




240 Weatherby Accumark, 85 gr. Nosler Partitions over 53.8 gr. H4831SC, Federal 210M primers, 3.070 OAL