Thread: 17hmr

Originally Posted by gimp

What level of precision are folks seeing with .17hmr (with ~10+ shot groups) ?

T1x 10 shots puts 8 into 20mm, but always a couple that take it out to 25-30 sometimes. Don't know if it's me, or ammo, but not worried about it. Still dead, just means it's shot in the eye instead of the ear.

Originally Posted by oraki

T1x 10 shots puts 8 into 20mm, but always a couple that take it out to 25-30 sometimes. Don't know if it's me, or ammo, but not worried about it. Still dead, just means it's shot in the eye instead of the ear.

Run your ammo over a concentricity gauge and it will shock you

Sort it and use the straightest ammo for long range, your 100 yard groups will shrink

Originally Posted by 7mmsaum

Run your ammo over a concentricity gauge and it will shock you

Sort it and use the straightest ammo for long range, your 100 yard groups will shrink

Ayyye???? Don't have one,........and don't really have any use for one. Are they a pricey investment?

Originally Posted by oraki

T1x 10 shots puts 8 into 20mm, but always a couple that take it out to 25-30 sometimes. Don't know if it's me, or ammo, but not worried about it. Still dead, just means it's shot in the eye instead of the ear.

Similar on the Rossi, seems to like the Horny 17gr vmax.

Originally Posted by vulcannz

Similar on the Rossi, seems to like the Horny 17gr vmax.

Your ammo that’s not concentric, ie bent, not assembled straight , will be the source of the random fliers

This problem surfaced in 2005 when the 504T was released , yes 20 years ago

They are still making 17hmr ammo today that gives you a giggle when rolled on a concentricity gauge, it’s the reason most went on to use a 223

The neck tension required to hold the projectile is ridiculously high and crimps the projectile, damaging it, and is also the reason they can’t anneal the necks, which results in split necks and causes velocity variations

The rifles are accurate, the ammo not so much

Originally Posted by 7mmsaum

Your ammo that’s not concentric, ie bent, not assembled straight , will be the source of the random fliers

This problem surfaced in 2005 when the 504T was released , yes 20 years ago

They are still making 17hmr ammo today that gives you a giggle when rolled on a concentricity gauge, it’s the reason most went on to use a 223

The neck tension required to hold the projectile is ridiculously high and crimps the projectile, damaging it, and is also the reason they can’t anneal the necks, which results in split necks and causes velocity variations

The rifles are accurate, the ammo not so much

Moving to a 223 with factory ammo would be a worse problem. My 17 would group an 1” at 100, I have deleted all the targets from my photos so cannot prove. A 12 gauge hull is good at 100.
Old ammo can be a problem, I always listen to the shot as I’ve had a couple fizz and leave the projectile in the barrel, split necks are common.
Just remembered I owned a 4th, it was Sako, but not made by Sako, didn’t own it long

Originally Posted by vulcannz

Similar on the Rossi, seems to like the Horny 17gr vmax.

rossi bolt or semi ?

Originally Posted by gonetropo

rossi bolt or semi ?

Bolt. I don't think they do a semi in 17.