17hmr

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Originally Posted by sneeze

There seems to be clusters related to the mag change, possibly breaking position to reload? Rimfire I find is quite sensitive to hold position . @mudgripz might chime in hopefully.
I havn't seen the lot to lot change in HMR being any where near as relevant as with 22LR. I have a couple of different lots of the cci 17gr HP here. If you want to try then I might be catching up with R93 at easter, he could take them back

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Scatter random throughout the mags. Haven't had a .17 in many years and I'd forgotten how little recoil there is, cool to watch the trace dropping in at 100m. Not much movement of the rifle. The high/low shots were often directly observable off the chrono - see a high shot and look at the chrono - yup 100fps faster.

A feller on RFC got the best 50rd .17hmr group with the same stuff at 1.375moa, but from a very heavy bench rig with a lilja custom barrel & 32x scope etc.

I'm going past a couple of gunshops this week so I'll see what else I can pick up to have a play with - cheers for the offer I might take you up if I don't find anything else on my travels.

The .17 is fun

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Originally Posted by gimp

Scatter random throughout the mags. Haven't had a .17 in many years and I'd forgotten how little recoil there is, cool to watch the trace dropping in at 100m. Not much movement of the rifle. The high/low shots were often directly observable off the chrono - see a high shot and look at the chrono - yup 100fps faster.

A feller on RFC got the best 50rd .17hmr group with the same stuff at 1.375moa, but from a very heavy bench rig with a lilja custom barrel & 32x scope etc.

I'm going past a couple of gunshops this week so I'll see what else I can pick up to have a play with - cheers for the offer I might take you up if I don't find anything else on my travels.

The .17 is fun

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The first two seem so and not unexpected with ammunition that dosn't suit the rifle but the third with the a more favorable load shows three distinct groups.
The only brand I saw really large es from was CCI A7. It was truly horrible . I havn't chroned any from some time now , Ill try the stuff I'm using if I get a chance.

Attachment 272097

Oh the numbers are not the actual shot numbers, just how I went round in the app. Scatter was random throughout

E.g shot 16 was actually about shot 7, and was a high value on the chrono

Be interested to see what 30 out of yours looks like on paper & chrono if you have some spare

SD of 33 = a true ES of about 200 which matches other results online

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Originally Posted by gimp

E.g shot 16 was actually about shot 7, and was a high value on the chrono

Be interested to see what 30 out of yours looks like on paper & chrono if you have some spare

SD of 33 = a true ES of about 200 which matches other results online

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Banging 30 rounds into paper is not something I find enjoyable or have any real ability to do consistently but I'm here now so Ill see if I can find some time on a still day. I would expect results to line up with your expectations in the 1.5 + ish moa.

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Originally Posted by gimp

Oh the numbers are not the actual shot numbers, just how I went round in the app. Scatter was random throughout

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:thumbsup:Ah ok, I assumed if you were numbering shots they would be the actual shots.

Ive got a Browning T-Bolt. Very accurate with Hornady ammo. Love shooting bunnies with it and the odd wallaby. Surprised by how it knocks wallaby over. Definitely needs the little suppressor its got on it. Wouldn't shoot it without that.