Does anyone have advice for 68gr Berger FB in a 10 Twist?

[14Copperhead]

I’ve had great luck with 90gr Berger Boat tails in my 10 twist at 300yds, but looking to improve my 100/200 yard results. Does anyone have advice for 68gr Berger FB in a 10 twist? Or other bullets?

 

[243winxb]

68gr Berger FB in a 10 twist

68 got IMR4350 90 gr got IMR 4831.

Shot the same as my 90 Berger hpbt. Both can do 1" @ 300

Rem 40x 243w 10 twist. 36x scope.

 

[6BRA]

Freebore?

 

[gunsandgunsmithing]

They'll shoot fine in a 10 twist. I've tested just this in a br rifle with a 10 twist bbl. Actually, the 68s and 80s shot better than the so called "twist appropriate" weight bullets.

 

[jpx2rk]

I've shot the Hornady 68g BTHP match in a Savage OEM 7T barrel with IMR 4064, very good results.

 

[14Copperhead]

Freebore?

My free bore is 0.070”

 

[AckleymanII]

What cartridge?

I have shot a lot of 62-68s in custom 243 Win with zero freebore, 10T!

 

[14Copperhead]

They'll shoot fine in a 10 twist. I've tested just this in a br rifle with a 10 twist bbl. Actually, the 68s and 80s shot better than the so called "twist appropriate" weight bullets.

What powder & velocity range? This is a straight BR by the way.

 

[gunsandgunsmithing]

Around 32.0 of n135 is a good place to be with 68's. Work up but that shouldn't be crazy hot.

 

[14Copperhead]

Around 32.0 of n135 is a good place to be with 68's. Work up but that shouldn't be crazy hot.

Thanks, but curious about where that will put me speed wise with a 25” barrel?

 

[gunsandgunsmithing]

Thanks, but curious about where that will put me speed wise with a 25” barrel?

Probably around 3225 or so. You can go hotter, per viht data on their site with 70's. N135 is a good powder for both speed and accuracy from a 6BR. If you're after speed, it's a good choice but you'll have to figure out how fast you can safely push them yourself, in your rifle. Twist has almost nothing to do with speeds and pressures.

 

[seagate]

24 in barrel 12 twist,,68 gr flatbase, 32.5 gr n135, cci 450, gives me 3449 avg on a 10 shot string with a athlon rangecraft

 

[Dean Slater]

I would try 80 grain bullets and N135 or IMR 8280XBR

 

[14Copperhead]

I would try 80 grain bullets and N135 or IMR 8280

 

[14Copperhead]

I already have the 68’s just curious if they are worth the try. 80gr would be my next option, thanks!