Any luck with 105 gr pills and a 1-9.25 twist in a .243 Win?

[rogn]

Warm weather, cold weather???

 

[barefooter56]

Has anyone had luck with 105 gr pills and a 1-9.25,or even a 1-9 twist) twist barrel in a .243 Winchester?

Came across a sweet deal for an assortment of 105 gr 6mm bullets. Comprised primarily of Berger 105 gr VLDs, with a mix of AMAX's and JLH's.

I have a 1-8 twist .243 barrel as well but I leave that for the 115 DTAC and Berger VLDs.

Going by Greenhill's formula, a 105 gr bullet at 1.220' in length,average, before trimming the meplat) traveling @ 2800 fps at the muzzle needs a 1-8 twist. I reduced the number to 1.15' and the formula allows for a 1-9 twist.

Guess I should just load a few up......unless someone here tells me not to bother.

TIA

223Rem,
Run your data and be sure to enter the correct or as close to correct ALTITUDE(s) you will be shooting at on our TWIST RATE CALCULATOR here :
http://www.bergerbullets.com/twist-rate-stability-calculator-updated/
And read Eric and Bryans article on how to interpret your findings accurately here :
http://www.bergerbullets.com/berger-bullets-twist-rate-recommendations-by-eric-stecker-bryan-litz/
Lots of good tools to help can be found on our website. Hope this helps.
Take care,

 

[jaygorski]

AMAXS, Hybrids out of a factory 700 9 1/8 twist no problem.

 

[Randfal]

I've shot 105amaxs, horn hpbt, Sierra 107s, Berger 105vlds, berger 108s, and nosler 105s thru 2 factory Remington 243 9.25 twist barrels and all shot well. Shot them from 1800' - 6000' elevation.

 

[ruetzcarl]

I would change powders and try H4350 or RL17, If you are launching the bullet 3000fps that is 240.000 rpm, and that is plenty to stabilize it.

Dean

I use 40.5 grains of IMR 4350 with 105 Amac and they all touch at 100yds.

 

[Bill Norris]

In my experience with the 243 factory twist barrels and heavier bullets they seem to work better at or near max loads.

 

[Zero333]

In my experience with the 243 factory twist barrels and heavier bullets they seem to work better at or near max loads.

Agreed, as long as they're faster than a 10" twist. But there is always weird exceptions. I had a 243 Savage 9.25" twist and it shot just as good or better at 2,575 - 2,600 fps than at 2,900+ fps. 22" bbl.
600 ft elevation and it was below freezing when I tested them in that barrel with H-4831sc, Win. brass and 210m sparks.

 

[Carl S]

Has anyone had luck with 105 gr pills and a 1-9.25,or even a 1-9 twist) twist barrel in a .243 Winchester?

Came across a sweet deal for an assortment of 105 gr 6mm bullets. Comprised primarily of Berger 105 gr VLDs, with a mix of AMAX's and JLH's.

I have a 1-8 twist .243 barrel as well but I leave that for the 115 DTAC and Berger VLDs.

Going by Greenhill's formula, a 105 gr bullet at 1.220' in length,average, before trimming the meplat) traveling @ 2800 fps at the muzzle needs a 1-8 twist. I reduced the number to 1.15' and the formula allows for a 1-9 twist.

Guess I should just load a few up......unless someone here tells me not to bother.

TIA

I have rebarreld quite a few .243 with 1-8t.they have shot excellent with 70grn up to 105grn.

 

[moorepower]

Old thread but 105 Amax shot around 1 1/4" from a Remington 788 at 200 yds.