243 & 1-9.25" barrel twist at long range????

[270yotekiller]

243 & 1-9.25\" barrel twist at long range????

I have decided against the wildcat 6-06mm as a long range caliber as it involves too much in terms of case preparation and loads based on "other similar" cailbers leaves me to questions my own abilities. So i have decided on a Savage FV in either the 243 or the 308 as a mid range killer for varmint/predators.

My question is the 1-9.25" twist good enough to stabilize the longer bullets used for LR shooting?

 

[coupalr]

Re: 243 & 1-9.25\" barrel twist at long range????

It should work fine all the way up to 105gr. But with that being said I cannot get my 6mm Rem to group at 100 yards with anything over 80gr and it has a 1 in 9 1/8 twist.

 

[bailey1474]

Re: 243 & 1-9.25\" barrel twist at long range????

My Savage 12BVSS shot well w/the 105 AMAX. 44 gr of H4350 .020" into the lands. Here are some of the results.

http://longrangehunting.com/ubbthreads/s...part=1&vc=1

 

[CPorter]

Re: 243 & 1-9.25\" barrel twist at long range????

The longer bullets require a faster twist rate to shoot really well. These are the 100 grain alloy bullets like the grand slam and the 105 grAmax, 107gr SMK, and 115gr Lapua(?). Hornady recommends a 1:8 twist or faster for the A-max. To get it to shoot out of a 1:9.125 and not precess or tumble you would to to load higher than normal velocities for a .243 or 6mm.

I tried them in my Rem 700 and got 1.5 moa out of them but didn't push velocities past recommended loads. The gun & I can shoot .3 moa with lighter bullets.

FWIW, the 55-70 grain ballistic tips (70 gr my fav), Vmax and Speer TNT work quite well. I use the 70 gr Noslers out at 500 yards. They also have a 80 gr ballistic tip for varmints but I haven't developed a better load than my 70 gr perform so haven't used them except in testing.

 

[coupalr]

Re: 243 & 1-9.25\" barrel twist at long range????

Looks like your gun likes the same bullets as mine Carl. The 70gr BT shoot the best out of my 1-9.125 twist. I have had poor results with anything over 85gr.

 

[lerch]

Re: 243 & 1-9.25\" barrel twist at long range????

Try the 105 amax, they shot great for me and Bill Bailey. Will give you definate preformance out to 1200yds I would guess.

good luck
steve

 

[Jimm]

Re: 243 & 1-9.25\" barrel twist at long range????

Hey guy ,

AI that thing ,use lapua brass , get your bbl with a 8 or 7 twist ( mine is a Schnieder 7.5 ) and shoot the 107 smks . You will love the results and the fireforming load s are extremely accurate

Jim