Sako 85 .243 100gr loads
- Thread starter ABWD
- Start date
Since when? I shot 100g through my Sako 75 .243 and I'm pretty sure it was a 1 in 10 twist.
McKenzie
Well-Known Member
1 in 8 will sort out most 243 bullets, 1 in 10 might just be ok. My 1 in 10 Sako is temperamental with 100g bullets and will only shoot short, flat-based bullets. It loves the 100g Sako Gameheads; it was in for some work recently & I asked the gunsmith (who also works up loads for people) to try & find a really good 100g bullet for me & he couldn't better the the accuracy of the Sako's (factory loads).
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I posted this to the thread about 100-gr bullets in the .243.
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The .243 Winchester and 6mm Remington (6x57mm) have come in a mix of rifling twist rates.
The Model 70 was 1:10, so most .243s are the same. The .244 Remington's were 1:12,and shot 75 and 85-gr bullets very well, but the Model 700 was changed to 1:10, then when the .244 Remington became the 6mm Remington, all Remingtons were change to 1:9 ( M700, M660, M788). When Remington started offering rifles in .243 ( which was far and away leading sales ), they made them 9 1/8" twist. Savage went with 1:9.25 in its .243s.
The Browning B78s were offered in 6mm Remington, with a 1:9 twist rate. I had one, and it shot everything into cloverleafs or bug holes. It has a longer barrel than most .243s or 6x57s, so it is steaming the bullets out faster than most. Stabilizing flat based 105-gr bullets or boattail 100-gr bullets was no problem for it, whereas a .243 Win with a 1:10 or 1:12 twist and a short barrel cannot muster the muzzle velocity necessary to impart the RPMs necessary to stabilize heavier bullets.
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The .243 Winchester and 6mm Remington (6x57mm) have come in a mix of rifling twist rates.
The Model 70 was 1:10, so most .243s are the same. The .244 Remington's were 1:12,and shot 75 and 85-gr bullets very well, but the Model 700 was changed to 1:10, then when the .244 Remington became the 6mm Remington, all Remingtons were change to 1:9 ( M700, M660, M788). When Remington started offering rifles in .243 ( which was far and away leading sales ), they made them 9 1/8" twist. Savage went with 1:9.25 in its .243s.
The Browning B78s were offered in 6mm Remington, with a 1:9 twist rate. I had one, and it shot everything into cloverleafs or bug holes. It has a longer barrel than most .243s or 6x57s, so it is steaming the bullets out faster than most. Stabilizing flat based 105-gr bullets or boattail 100-gr bullets was no problem for it, whereas a .243 Win with a 1:10 or 1:12 twist and a short barrel cannot muster the muzzle velocity necessary to impart the RPMs necessary to stabilize heavier bullets.
bewsher500
Well-Known Member
I have found this to be true of a number of Sako barrels in a variety of calibres now
100gr in most 1:10" barrels is usually fine but may be matched to a sweet MV or bullet style
I personally found flat base interlocks in both SP and RN format were very accurate from two different Parker Hales
Not pushed to the limit but two clear accuracy points
I chose the slower of the two as I was only shooting Roe in Scotland with it
As many .243 Win owners as there are on this forum, it would be interesting to hear from those who use a Remington M-700 or Model 7 with 20-inch barrels of 1:9 rifling. A lot of people I know use the Model 7 with 100-gr Core Lokt ammunition and swear by the accuracy and lethality on deer.
bewsher500
Well-Known Member
I have yet to find a rifle that likes Sako factory ammo....including my sakos!!
the .243 ammo was the worst of the lot and gave 5-6" groups in two different .243 I had
The same .243 would shoot Interlocks into ragged holes
.270 was OK,
.222 I was getting 3" groups at best
My sako 85 in 223 and my tikka t3 in 308 both shoot less than half inch groups with factory sako ammo and have done from day one.
my mate owns a Sako 85 SS and it will not shoot a decent group with 100gr ammo.
regards Neil.
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Chasey
Well-Known Member
I agree. My T3 with Sako Hammerhead 308 shoots extreemly well
Not tried Sako in my 243 Sako 75 purley because I got a shead load of 100g Federal & 75g Nosler home loads to get through first
Excellent! How old is your son?
Too often we obsess over sub-one-inch groups, when in reality, most of the shots will be under 200 yards, and the person behind the trigger counts for more than the rifle or ammunition.
Happy stalker
Well-Known Member
I am getting sub MOA groups at 100m with Sako 100gr Gameheads with my Tikka T3 243
Fallowfield14
Active Member
The Sako 100gn factory rounds group at around 20mm in my Blaser R8 (1 in 10 ) but I can't obtain a decent group with 100gn Hornady softpoints or tbsp with IMR 4350, Hodgden 4350 or Ramshot Hunter despite lengthy testing. Conversely, the equivalent Speer bullet are capable of excellent grouping with the same powders.
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