260 ai Reamer spec and load data

806 guns · Jun 24, 2026

twister said:
H4350 is good for mine. It is throated long too, built on a medium length action.

What oal and bullets are you using ?

twister · Jun 25, 2026

806 guns said:
What oal and bullets are you using ?

I will try to remember to measure. The throat is .201 for the 140 Elite hunter.

Kimber7man · Jun 25, 2026

Any sense in trying StaBall 6.5 instead of H4350? Only asking cause I have 16 lbs of it…

twister · Jun 26, 2026

806 guns said:
What oal and bullets are you using ?

OAL is 2.95

bowhunter1287 · Jun 26, 2026

Kimber7man said:
Any sense in trying StaBall 6.5 instead of H4350? Only asking cause I have 16 lbs of it…

I would try it I am running superformance at the moment behind a 125 Maximus cutting edge. 22" barrel and getting just about 3100

Hydra6 · Jul 8, 2026

Kimber7man said:
Any sense in trying StaBall 6.5 instead of H4350? Only asking cause I have 16 lbs of it…

You probably will find more velocity with SB65

Hydra6 · Jul 8, 2026

I have a Tikka CTR 20 inch Tikka OEM barrel. Is there a gunsmith who convert that Tikka 260 to a 260AI? Thanks

highdrum · Jul 9, 2026

Hydra6 said:
I have a Tikka CTR 20 inch Tikka OEM barrel. Is there a gunsmith who convert that Tikka 260 to a 260AI? Thanks

I had Hoover Precision in Columbia Falls MT punch a Tikka 22-250 out to a 22cm. He would likely do the work, idk if he has a 260ai reamer tho. He does good work, get in touch with him.

806 guns · Wednesday at 4:00 PM

I loaded some 140gr berger in new Alpha srp brass. Shot one .5 hole at 100 with Shooters world Long Rifle. I need to shoot it up and figured why not. Its close to h4350, loaded it to the same speed as the factory loaded barnes precision match 140gr load. My notes show 2625fps. Lets load all 200 and shoot!
H4831SC and 153.5 coming soon

VinceMule · Wednesday at 4:35 PM

Justice1327 said:
I shoot several 260/260AI. this is my latest build/reamer.
I have a Bartlein 1:9 to 1:8 GTW barrel. I shoot 130-144 gr bullets.
I used a 6.5x55AI and a 6.5x284AI to shoot the heavier 150+ gr bullets.
I believe they have the case capacity to help push those heavier bullets...but not saying those bullets cant be effective in a lesser case capacity cartridge...I did try it in my 6.5 Creed after I had the chamber FB extended. Worked ok, but I like to have more velocity.

I like the reamer print with the dimension of .4714 at the .200 line(Y). Gives you some lattitude in shooting Lapua brass without clickers. Freebore dia is another plus! This is one heck of a reamer, in other respects also!

VinceMule · Wednesday at 5:07 PM

I am shooting 140s at 2960 on a 26" barrel. The 100g Nosler ballistic tips at 3400 shoots zero's and ones! I need to order a reamer off of Justice's reamer print! This is a very, very easy case to tune with multiple powders and bullets....like a big 6 BR.

VinceMule · Wednesday at 6:39 PM

806, have you tried Stabal 6.5?

130g ELD-Ms have proven to be a great deer bullet, so have the 140 eldm

806 guns · Wednesday at 6:44 PM

VinceMule said:
806, have you tried Stabal 6.5?

130g ELD-Ms have proven to be a great deer bullet, so have the 140 eldm

No, I have tons of sw long rifle and H4831SC to use up.

260 ai Reamer spec and load data

806 guns

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twister

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