257 AI and Barnes 100 TTSX

[Caseknife]

Anyone have a favorite load for the 257 AI with the Barnes 100 TTSX? I have 100 Nosler +P cases freshly fire formed. Have plenty of the Barnes and lots of different powders, but was specifically looking to work something up with RL-16, 17 or 26, or AR-Comp. Thinking that I would like to hit 3200fps, may or may not be achievable. Any thoughts?

 

[std7mag]

First off, what twist rate is your barrel?
A 100gr mono may not stabilize in the "normal" 25 caliber 1:10 twist.

Try Hybrid 100V.
Only powder getting me close to your velocities with 100gr Ballistic Tip from the standard 257 Roberts.

 

[.270]

I achieved that velocity in a standard bob and a 22" barrel with RL-17. I was using 100 grs Scirocco 2, velocity was there but accuracy was lacking. Settled with H4350. Rl-17 or 16 should get you there, no experience with 26 or AR-comp in standard short cartridge.

 

[nhenry]

First off, what twist rate is your barrel?
A 100gr mono may not stabilize in the "normal" 25 caliber 1:10 twist.

Try Hybrid 100V.
Only powder getting me close to your velocities with 100gr Ballistic Tip from the standard 257 Roberts.

??? The 100 TTSX and 101 LRX are literally designed for use in 1:10 twist barrels, per Barnes' instructions. I've always had them shoot well, even in rifles that shot not-so-great otherwise.

OP, I'd see if I can pick up some IMR 4350 or Ramshot Hunter and look in the Nosler manuals. Should be achievable.

 

[Caseknife]

The rifle is a Winchester Mdl 70 Fwt built around 1989. It stabilized the 100TTSX just fine as a standard 257. I've got ladder loads plotted with RL16, 17 and 26, see how they do. Think I have some IMR4350 but will try these first. I settled on RL16 over 17 in the standard Bob, can't quite remember why, probably group size. Thanks for the replies. I will post up what I settle on for the end.

 

[std7mag]

??? The 100 TTSX and 101 LRX are literally designed for use in 1:10 twist barrels, per Barnes' instructions. I've always had them shoot well, even in rifles that shot not-so-great otherwise.

OP, I'd see if I can pick up some IMR 4350 or Ramshot Hunter and look in the Nosler manuals. Should be achievable.

I didn't check Barnes manual.
Going off of other mono manufacturers.
90gr is heaviest their bullets will stabilize in a 1:10.

 

[nhenry]

I didn't check Barnes manual.
Going off of other mono manufacturers.
90gr is heaviest their bullets will stabilize in a 1:10

Most companies that I can think of (aside from Hornady and Hammer*) have 100gr monos for 1:10. Nosler, Barnes, and Federal all have 100gr monos loaded for their 25-06 ammunition. Lehigh defense also has a 102gr mono that Underwood loads in 25-06 ammo.

There are obviously outliers, like Cutting Edge's products. For the most part, though, 100gr monos are typically good for 1:10 twist barrels.

*Hammer has a 104 mono rated for 1:10, but it doesn't have a boat tail.

 

[MT_Chad]

I'm working up loads for my old man's 257 Ackley. Our best groups so far with Barnes 100 ttsx were with 4831sc. Ramshot hunter also shot well.