Thread: 17hmr

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