Ruger 77 17hm2 tumbling

[17-222]

I picked up a 77/17hm2 all weather a few months back and the bullets all tumble out of the gun. At 50yds it won’t stay on a sheet of paper. The crown looks good and I cleaned the barrel. Anyone experience 17hm2 tumbling? I have tried 4 different boxes of ammo different lots. At this point I might just list it as is.

 

[Preacher]

I picked up a 77/17hm2 all weather a few months back and the bullets all tumble out of the gun. At 50yds it won’t stay on a sheet of paper. The crown looks good and I cleaned the barrel. Anyone experience 17hm2 tumbling? I have tried 4 different boxes of ammo different lots. At this point I might just list it as is.

PM sent..

 

[1raggedhole]

Never heard that before. Those are bringing absolutely silly prices on Gunbroker. Assuming you didn’t overpay for it, you can probably make some good money on it.

 

[drover]

I picked up a 77/17hm2 all weather a few months back and the bullets all tumble out of the gun. At 50yds it won’t stay on a sheet of paper. The crown looks good and I cleaned the barrel. Anyone experience 17hm2 tumbling? I have tried 4 different boxes of ammo different lots. At this point I might just list it as is.

Since the bullets won't stay on a sheet of paper how did you determine that they are tumbling? Are they showing evidence of it on the backstop or what?

Have you taken a good look at the rifling to see if maybe there is some missing or damaged?

drover

 

[1raggedhole]

Or put one of these bad boys on:

77/22 17 HM2 - Lilja

Varmint Taper: .920 Diameter Shank for 3.000" then straight taper to .688" at 21" (blank dimension shows 24" finish) Bull Barrel: .920" diameter straight and 21" long in .22 caliber and weight is 3 pounds 6 ounces. At times we have un-crowned barrels on the shelf that can be finished at...

riflebarrels.com

 

[JEFFPPC]

Mic the bullets to see if they are undersize if they are all from 1 box . Try a different brand.Check th crown for damage

 

[fkimble@charter.net]

I'd be on the phone with Ruger and Hornady!

Frank

 

[diyj98]

I've never seen problems with a mach2 tumbling. I'm curious what you'll find out. Ruger quality control can be a bit lacking at times. Maybe the bore is slightly oversize. I'd be tempted to slug the barrel.

 

[searcher]

After trying four different kinds of bullets - safe to say it isn't the ammo. I'd send it off to Ruger. Even if not under warranty, I'm sure they would be fair to fix it up.