MinnMooney
Member
I'd like to shoot 90gr - 105gr bullets in my .243Win but I'd like to know what rate of twist is suitable. Anyone know for sure?
What twist for .243Win to stabilize heavier bullets?
- Thread starter MinnMooney
- Start date
- Status
Sunray
Member
1 in 10 or faster. Most commercial hunting rifles have a suitable twist. Even those with heavy barrels. For example, Savage uses 1 in 9.25, Remington 1 in 9 1/8", Browning uses 1 in 10.
Mine likes IMR4350 with those bullet weights.
Mine likes IMR4350 with those bullet weights.
browningguy
Member
I shoot a Savage 12FV with 1:9.25 twist and it stabilizes everything up to 105's.
It will not shoot the VLD bullets accurately though, as I can not fit them in the magazine if I seat them long enough to engage the lands.
It will not shoot the VLD bullets accurately though, as I can not fit them in the magazine if I seat them long enough to engage the lands.
Jim Watson
Member
The original Winchester 10" twist will stabilize a 100 gr flatbase spitzer.
Some rifles have 9" twists that will do for a 107 gr boattail... usually.
A Long Range target rifle will have an 8" twist to be SURE with the 107 and to handle the 115.
Some rifles have 9" twists that will do for a 107 gr boattail... usually.
A Long Range target rifle will have an 8" twist to be SURE with the 107 and to handle the 115.
TGT
Member
I wouldn't go slower then the 1-9 for a 105, with Pac-Nor or Krieger's 8.5 twists being perfect.
MinnMooney
Member
I have the Savage with the 1:9.25" twist.
It sounds like I should be able to stabilize everything but the heaviest 105gr bullets. I'll try loading some 100gr Hornady InterLock BT-SP bullets that I have already and see how they shoot. I may buy 100 of the 105's just for a test.
To "browning guy" : Have you tried to shoot the 105's by single loading (w/o using the magazine) to see if they'll stabilize out of your Savage?
To "Sunray" : You say IMR4350 powder. What charge do you use for a 100gr &/or 105gr bullet?
It sounds like I should be able to stabilize everything but the heaviest 105gr bullets. I'll try loading some 100gr Hornady InterLock BT-SP bullets that I have already and see how they shoot. I may buy 100 of the 105's just for a test.
To "browning guy" : Have you tried to shoot the 105's by single loading (w/o using the magazine) to see if they'll stabilize out of your Savage?
To "Sunray" : You say IMR4350 powder. What charge do you use for a 100gr &/or 105gr bullet?
uk roe hunter
Member
- Joined
- Jun 30, 2006
- Messages
- 350
twist rate
Rugers m77 have a 1 ;9 twist rate. I found it shoots very well with 100 gr hornady flatbased spitzers loaded near to max but it doesn't like the speer 105 gr spitzer very much.
If you are intending to use this rifle for deer or larger game i would suggest you look at 7mm08 or 6.5 x 55 or .270. The .243 is a great rifle calibre but it's optimum performance envelope is probably around 80 grains. If you choose a bigger calibre you will get better flexibility. I have a .243 win, 7mm08 and .30-06 sprg. I find it dificult to see that i will ever hunt a deer with .243 again. if recoil is an issue then try 130 gr 7mm08 it is nice and light to shoot.
regards
steve
Rugers m77 have a 1 ;9 twist rate. I found it shoots very well with 100 gr hornady flatbased spitzers loaded near to max but it doesn't like the speer 105 gr spitzer very much.
If you are intending to use this rifle for deer or larger game i would suggest you look at 7mm08 or 6.5 x 55 or .270. The .243 is a great rifle calibre but it's optimum performance envelope is probably around 80 grains. If you choose a bigger calibre you will get better flexibility. I have a .243 win, 7mm08 and .30-06 sprg. I find it dificult to see that i will ever hunt a deer with .243 again. if recoil is an issue then try 130 gr 7mm08 it is nice and light to shoot.
regards
steve
Swampy
Member
MM wrote:
It's the LENGTH of the particular bullet you need be concerned with, not the weight.
Your 9.25 twist should stabilize standard profile 7-9 ogive bullets in the 105 gr. range just fine, as they will normally be stable from a 10" twist. The longer 105 gr. VLD's MIGHT stabilize in your 9.25", but it may be iffy for some of them. Most will need a 9" twist.
Best regards and good luck,
Swampy
It's the LENGTH of the particular bullet you need be concerned with, not the weight.
Your 9.25 twist should stabilize standard profile 7-9 ogive bullets in the 105 gr. range just fine, as they will normally be stable from a 10" twist. The longer 105 gr. VLD's MIGHT stabilize in your 9.25", but it may be iffy for some of them. Most will need a 9" twist.
Best regards and good luck,
Swampy
uk roe hunter
Member
- Joined
- Jun 30, 2006
- Messages
- 350
twist rate
.....
.....
Last edited:
Shawnee
member
FWIW... My sons and I have used the Hornady 87-gr. BTHP in .243s to kill roughly 125 deer in four states and not lost any. Almost all dropped where they stood.
A very accurate and reliable (but near-max) load with that bullet (in MANY .243s) has always been 42.5grs. of IMR4350. Twist rates on our several rifles have all been faster than 1:10.
A very accurate and reliable (but near-max) load with that bullet (in MANY .243s) has always been 42.5grs. of IMR4350. Twist rates on our several rifles have all been faster than 1:10.
Shawnee
member
Hi Ken...
Not at all surprised your 6mm likes that load. The one and only 6mm I had liked it too (with the Hornady) bullets.
When I lived in San Antonio that load put at least 40 deer from the Cotulla area into my smoker.
Not at all surprised your 6mm likes that load. The one and only 6mm I had liked it too (with the Hornady) bullets.
When I lived in San Antonio that load put at least 40 deer from the Cotulla area into my smoker.
browningguy
Member
MinnMooney, I've shot standard 105's in mine with no problem. The problem is with the Berger VLD design, it absolutely requires that you load the bullet to touch the lands. I gave up on them quickly after running into the OAL problem with the magazine, the 70-105's (Sierra SMK/GMK and Nosler BT's)work fine for me. I'm sure they'll shoot if you single load, just something I don't want to do.
- Status
