Thread: Short .260

hit approx 2610 so far with 2209 and 140 amax, 19ish inch tube, no pressure yet

Nearly 7.62x39 ballistics

Originally Posted by gimp

hit approx 2610 so far with 2209 and 140 amax, 19ish inch tube, no pressure yet

What is your twist rate, and what degree of accuracy are you getting?

1:8" and .5moa for 5 shots, finnlight, have only tested .5gr increments so far so if it doesn't tighten up further I'll be extremely surprised

Range looks abit better than that strip


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for sure, only took about 6 months to find a way of actually nailing down joining

up to 2705avg today at 1.5gr over book max (2209). Loading long though, 2.92" OAL, .2mm off the lands, and no visible pressure signs - primers still rounded on the edge, consistent increments in speed, no ejector marks, easy bolt lift. Quickload once adjusted for fireformed case water capacity suggests approx 60,000 psi and predicts 2714 fps, the speed prediction is pretty close to right on.

accuracy average - seems to be throwing a first round flier on every group today, unless it's my shooting suffering from the horrendous flu I've picked up.


e: didn't have this problem with the Blaser *shakes fist*

Run an Ackley reamer thru it.

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fuck that

Originally Posted by gimp

up to 2705avg today at 1.5gr over book max (2209). Loading long though, 2.92" OAL, .2mm off the lands, and no visible pressure signs - primers still rounded on the edge, consistent increments in speed, no ejector marks, easy bolt lift. Quickload once adjusted for fireformed case water capacity suggests approx 60,000 psi and predicts 2714 fps, the speed prediction is pretty close to right on.

up to 303brit ballistics ?

I will be up in the arvo sometime checking some stuff.
Reckon your bullets might have made it to the target by then?😆

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Originally Posted by R93

I will be up in the arvo sometime checking some stuff.
Reckon your bullets might have made it to the target by then?��

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if not I might be able to catch up to them and walk them in, I'll be up there too

Just remembered South island CA Champs start tomorrow.
Range is closed for use till Monday. Should be okay early morning.

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Ah fuck, I'm going down to Haast on Thursday, need to get a load sorted