Your bullet and weight of choice in .243 and .270 win on deer please?

Speer 105 SP's with IMR4350. And a 1 in 9.125 twist. No reason a 1 in 9.25 should not stabilize a 105 though.
A-Max bullets are for hunting anything but varmints. A-Max bullets are match bullets.
"Iffy" is being polite. .243's seem to go one way or the other with 1 in 10. Seems to be just Browning who uses it.
 
100 grain 243 bullets in a ten inch twist are iffy.
They will give hunting accuracy, but the 243 rifles I have had, or have, would not group as well with 100 grain bullets as they do, or did, with bullets weighing from 70 grains to 90 grains.
Some 100 grain bullets group better than others with the ten inch twist, indicating the twist rate is very marginal for them.

Sorry to hear you have had some finicky .243`s, you should try some of your favorite powder or even some that is a little slower burning with the 100 gr bullets. This has worked for me when loading for the .243.
 
Speed kills...So I reload 85's in the .243 @3300fps and 130's in the .270 @3150fps...Flat, accuracy with hydrostatic lethality...
 
In the 270win I use the 150 grain Nosler Partition for deer in NS, mainly because hunting in heavy timber and brush a heavy bullet is said to 'buck the brush' better.If I were in more open county I'd use the Accubond in 130 grain. Yes, I like the Noslers.
 
100 grain 243 bullets in a ten inch twist are iffy.
They will give hunting accuracy, but the 243 rifles I have had, or have, would not group as well with 100 grain bullets as they do, or did, with bullets weighing from 70 grains to 90 grains.
Some 100 grain bullets group better than others with the ten inch twist, indicating the twist rate is very marginal for them.

This is my experience as well!
 
In the 270win I use the 150 grain Nosler Partition for deer in NS, mainly because hunting in heavy timber and brush a heavy bullet is said to 'buck the brush' better.If I were in more open county I'd use the Accubond in 130 grain. Yes, I like the Noslers.

Complete myth.

95 or 100 grain Partitions for the .243 and 140 grain Accubonds for the .270
 
100 grain Remington bulk soft points in my .243's. Killed more deer with them than I can remember (well over 20). No need for fancy bullets. Most killed at 100 yards though the odd one out to 200 yards mostly in open fields.
 
With the 243 I would use a good bullet that is heavy that will stabilize the frontal area is small and you need it to penetrate. Just my thoughts.
 
hydrostatic lethality...

What??.........................................................I Googled ".270 Win hydrostatic" and here is what Wikipedia says:

"When loaded with a bullet that expands rapidly or fragments in tissue, this cartridge delivers devastating terminal performance, including remote wounding effects known as hydrostatic shock."

"This statement is only partially correct, on -some- animals. Most animals are best taken down with a controlled-expansion bullet, with the extra velocity of the .270 Win giving additional damage from hydrostatic shock. It is the velocity that gives the most useful hydrostatic shock, not rapid expansion"

I've been shooting .270 Win for 26 years and would only use your term if I was shooting a non expanding projectile (I.e. FMJ) and missed bone, muscle and arteries and still had an instant kill, which is not possible on a deer, but is possible on a swimming goldfish. Please don't invent terms that will cause more .30 caliber guys to hate the .270. Terms like shock, kinetic energy, penetration, expansion, flat shooting will earn you much more respect.
 
I haven't used it on deer, but when I had my .243 I was loading 87gr V-max bullets. I took three coyotes with it and all three dropped where they where shot.
 
I am more of a 6mm Remington guy than a 243 type. Still, I have owned and used several 243 Rifles.

With the exception of one Remington 700, all had the 1-10" twist. Never had any issues with 100 grain Partitions in any of them.

However, if I had, I would have simply dropped down to the 95 Partition. Not a deer alive (or dead) that would know the difference, lol.

Remington, after the 244 fiasco, changed the twist in their 6mms and 243s to 1 in 9-1/8", so stabilizing most hunting bullets up to 105 grains is no problem.

I have also owned 2 M722 Remingtons with the 1-12" twist. If you loaded them right up there, MOST 100 grain bullets would work, but not all.

The original Remington 100 grain Cor-Lokt, which was quite stubby, shot fine. The later design Remington Cor-Lokt, which was longer, would not shoot.

The Sierra 100 boattail keyholed, the Hornady flat base shot fine. These rifles had 26" barrels, so getting 3200+ fps was not hard....I'm sure that helped a bit.

Any 6mm I have had built in recent years has been with a 1-8" twist, and handle all VLD bullets up to 108 grains.

Regards, Dave
 
When I used a .270 more it was generally with 130 Sierras or Hornadys, depending on availability. Used the same bullets on moose too. In later years a 130 Ballistic-tip got used more, and I use those in the WSM as well.
 
In .243, I pretty much stick with 95 Partitions for hunting, these are both 9 1/4 twist guns; No.1-RSI and M77... with my M77 Predator I shoot the 95 SST's... they are all accurate.
 
Thanks gentleman. I'm going to order up some sierra and nbt bullets to try. I will try 90 -100 in the .243 but i am probably going to stick to the 130's for the .270. Every factory 130 offering i have tried has shot well in this rifle. Just started reloading recently and have already got a healthy stock of bullets for my 30 cal rifles.
 
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For my 243 -95 gr hornady sst with 33 gr of varget. my rifle prefers off the lands a hair and delivers rounds through the same hole. haven't had a chance to chrony it yet. never picked one up and don't know anybody with one.
 
I use 51.5 gr of N160 and Barnes TTSX 130 gr in my custom Tikka t3 in a bell and Carlson stock.

Shoot well sub moa (often have bullet touching each other shooting on bipod at the range)
as for power, I shoot a deer of about 200 pound almost a frontal shot and the bullet literally blown up both lung and cut the heart in half. The bullet ended its trajectory near the skin of his butt!
 
For deer I have been using Barnes TTSX 110gr in my 270 Win. Speed. lower recoil,bullet stays together,good penetration,really works well.
 
The 243 I have now is the newer Marlin bolt action, what is it, XS7, or some such thing. It is the most accurate 243 I have ever had, including quite a heavy custom built one with well known barrel and a tuned up 98 action, built by a well known BC gun smith.
When the Rifleman's Rodeo's were held here, I had an earlier 243 on a military Mauser 98 action, built by an Edmonton gunsmith, but it was heavy for target shooting and I never tried 100 grain bullets in it.
In all honesty I have not yet given the 100 grain bullets a thorough enough try to really know how well the newer Marlin does with them, but in what I have done with it, the 100 grain made larger groups than did the 70, or 75 grain, spritzer or hollow point.
I shot deer with the old Ruger 77 I once had, but a two inch 100 yard group with it with 100 grain bullets was above average. However, accuracy was not what it should have been with any bullets.
And I loaded the 100 grain bullets to go. I used 47 grains of the old surplus H4831, which gives about a 80 fps faster velocity than does the same amount of the modern H4831.
NOTICE. 47 grains of H4831 is higher than shown in any loading manual, so, DO NOT TRY IT.
I Tried some 105 grain bullets in the Ruger and they made a pattern which was about full choke size!
 
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