240 vs 243

todbartell said:
Rebarrel with a 1:8 or faster barrel twist 240Wby, try it and let us know.
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That'd be a cool build, but for a variety of reasons not really on my list of interests. I do wonder how a 103 or 108 would run out of a standard 1:10 twist barrel.

I was comparing the best of available factory ammunition that will shoot in off the shelf rifles.
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Things might be vastly different out your way, but it seems a little optimistic to call 240 WBY or 6mm CM "off the shelf".
 
Gatehouse said:
Stop trying to bring down range ballistics and barrel twist into the disscusion. We all know muzzle velocity is the only important thing.
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Definitely not the only thing, but if your hunting opportunities don't offer yardages beyond a few hundred, what a bullet does at 500 yards starts to take a backseat.
 
rkm456 said:
Definitely not the only thing, but if your hunting opportunities don't offer yardages beyond a few hundred, what a bullet does at 500 yards starts to take a backseat.
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Then it really doesn't matter which of the cartridges you pick for that application, so may as well go with the one that is less expensive and more available.
 
Gatehouse said:
Then it really doesn't matter which of the cartridges you pick for that application, so may as well go with the one that is less expensive and more available.
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Humane dispatch is a consideration I personally have beyond just what's cheaper and/or more convenient.
 
todbartell said:
sure

243 Win Federal Premium 100gr Sierra Boat Tail @ 2960 fps
200y zero, 2560 fps / 1450 ft lbs energy
300y -6.7" drop, 2370 fps / 1245 ft lbs
400y -19.7" drop, 2188 fps / 1063 ft lbs
600y -10.9moa drop, 1850 fps / 761 ft lbs, 2.9" wind deflection per 1mph wind (full crosswind)
800y -19.0moa drop, 1550 fps / 535 ft lbs, 5.5" wind deflection
1000y -29.3moa drop, 1300 fps / 375 ft lbs, 9.4" wind deflection
$1.85 per round

6mm Creed Hornady 108gr ELD @ 2960 fps
200y zero, 2630 fps / 1665 ft lbs energy
300y -6.4" drop, 2480 fps / 1475 ft lbs
400y -18.4" drop, 2330 fps / 1300 ft lbs
600y -10.0moa drop, 2050 fps / 1005 ft lbs, 2.2" wind deflection per 1mph wind (full crosswind)
800y -16.7moa drop, 1785 fps / 765 ft lbs, 4.1" wind deflection
1000y -25.0moa drop, 1550 fps / 575 ft lbs, 6.9" wind deflection
$2.10 per round

240 Wby Mag, Weatherby 100gr Nosler Partition @ 3406 fps
200y zero, 2910 fps / 1880 ft lbs energy
300y -5.0" drop, 2685 fps / 1600 ft lbs
400y -14.8" drop, 2465 fps / 1350 ft lbs
600y -8.4moa drop, 2065 fps / 945 ft lbs, 2.7" wind deflection per 1mph wind (full crosswind)
800y -14.8moa drop, 1705 fps / 645 ft lbs, 5.2" wind deflection
1000y -23.2moa drop, 1395 fps / 435 ft lbs, 9.0" wind deflection
$7.50 per round


240 Wby brass empties, Norma, $2.80ea
6mm Creed brass, Peterson $1.24ea , Starline $1ea. Hornady $1.24ea, Lapua $1.56ea, Alpha $1.50ea, Nosler $1.35ea
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Nice Comparison ! a 100 gr Partiton vs a 108 ELD Bullet ! Good TRY but most people relize how much better the ELD bullet is ! LOL RJ
 
MiG25 said:
The Creedmore is only 120 years behind the 6mm Lee Navy, similar twist, similar capacity. Sound new and improved at the same time.

Can a 240 be reamed to 6-06? That would simplify brass.
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I didn't compare the 6mm CM to the 6mm LN, but your conclusion would not surprise me: I always avoid "new" bandwagons as the originality shortcoming is "meh".

It might be possible to ream out the 240 to 6mm-06 as the belt on the former is the same diameter as the head of the latter: The former is several thousandths longer around the shoulder taper though, and the case is a thou longer so this might be enough to dash those hopes. Consult a gunsmith about the job... if the barrel has to be set back for a possible issue with the shoulder and headspacing, your barrel thread area and iron sights will muck it up. Brass would be easier to obtain, but you will have to purchase custom dies whereas there are used 240 dies around though new would likely be slightly more expensive than the common chamberings. I expect the 240 would be cheaper all things considered between the two, plus you get the cool nostalgia of using an uncommon round.

I was going to ask what you intend to use it for, but it seems you are considering the Weatherby as a new acquisition. It and the 243Win are very much overbore, which will amount to nothing if it's a 20-40round a year hunting rilfe... who says it must be loaded to peak anyway?
 
Gatehouse said:
Do you feel that some of the cartridges being discussed are incapable of trajectory and energy to ensure humane dispatch?
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Like many things, it depends on context. I'd prefer to avoid using a 6mm projectile on an elk, moose or black bear altogether if possible.
 
rkm456 said:
Like many things, it depends on context. I'd prefer to avoid using a 6mm projectile on an elk, moose or black bear altogether if possible.
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The context is that This is a thread about 6mm cartridges. You brought up hunting distances of a few hundred yards, concerns about humane dispatch and now different classes of animals that you don't want to shoot with a 6mm. Which basically leaves us with deer sized animals or smaller.

So within this context that you have supplied us, Do you feel that some of the cartridges being discussed are incapable of trajectory and energy to ensure humane dispatch?
 
Gatehouse said:
Do you think that the same deer, at the same distance, hit in the same place, with the same bullet but launched from different cartridges would react differently depending on the cartridge?
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If the deer is hit in the right spot, no. If it isn't, yes.
 
Gatehouse said:
Ok,I see- you feel that some cartridges (using the exact same bullet at the same distance) will compensate for poor shot placement. Interesting. Thanks.
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or any of the other myriad of factors that can come into play during hunting situations.
 
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