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!

 

[WyleWD]

As has been stated before, the 10tw 6br in my experience with them can be a very good choice. Definitely an overlooked combination for 300yds. You might have to try several different 68's-70's, but they can be a real eye opener for accuracy even to 300yds. Same with the 80's but not a lot of available options in that bullet weight. And the 90's you're shooting were quite good too.

Powder(s) we used were N135 & 8208 for the 68's & 80's, and 4895 for the 90's.

And if you have some CCI 450 primers handy that might(?) help.

Bullets we used in the 10tw BR were Barts 68 dominators, Bart's 80gr dominators, and 90gr Bergers that you already have tried. Good luck and let us know how it goes for ya. Happy holidays! WD

 

[SeabeeKen]

My PPC 13T has a love affair with N-135 and 80 gr also