Sig Rattler Bullet Stabilizing Issue

[wpalm00]

Hello everyone,

I bought a Sig Rattler for a bed side gun last year and held off sighting it in until now because I thought ammo would loosen up a little. I was wrong for the most part.

Regardless, I took it to the range, put 20rds in the mag and at 25yds it had serious stability issues. Shots 1-4 were good. 5-7 began to show signs. 8-9 were sideways in the paper. 10-13 showed signs of destabilizing. 14-17 were better. 18 was almost as sideways as 8-9 and 19 was perfect.

I have no signs of a baffle strike.

I was shooting 220gr Sig Subsonic ammo. I’m not a fan of Sig ammo but is it possible there would be that much velocity variance in the same box to be causing stability issues?

Just seeking some thoughts and wisdom.

The set up is:
Sig Rattler in 300blk
Sandman-S can
Trijicon MRO
SB 1913 brace
Surefire Mini-Scout

 

[Kahrnut]

Hello everyone,

I bought a Sig Rattler for a bed side gun last year and held off sighting it in until now because I thought ammo would loosen up a little. I was wrong for the most part.

Regardless, I took it to the range, put 20rds in the mag and at 25yds it had serious stability issues. Shots 1-4 were good. 5-7 began to show signs. 8-9 were sideways in the paper. 10-13 showed signs of destabilizing. 14-17 were better. 18 was almost as sideways as 8-9 and 19 was perfect.

I have no signs of a baffle strike.

I was shooting 220gr Sig Subsonic ammo. I’m not a fan of Sig ammo but is it possible there would be that much velocity variance in the same box to be causing stability issues?

Just seeking some thoughts and wisdom.

The set up is:
Sig Rattler in 300blk
Sandman-S can
Trijicon MRO
SB 1913 brace
Surefire Mini-Scout

Have you shined a light into the barrel to see if it has rifling?

 

[wpalm00]

Have you shined a light into the barrel to see if it has rifling?

Hi! Yes. I checked the barrel for rifling when I was checking for impact damage.

 

[Control for Smilers]

Don't these rifles/pistols have a 1:5 twist barrel? did you shoot it without the can?

 

[Control for Smilers]

1:5 should stabilize anything you can fit in the chamber.

 

[Porter Rockwell]

What's your barrel length? You could/should also try different ammo

 

[Kahrnut]

Drop an unfired bullet in the chamber, see if it falls out the barrel.

 

[wpalm00]

1:5 should stabilize anything you can fit in the chamber.

Don't these rifles/pistols have a 1:5 twist barrel? did you shoot it without the can?

Yes they have a 5” 1:5 barrel. Unfortunately, I was on a time crunch and didn’t have time to go through my normal experiments like shooting w/o the can or trying different ammo.

 

[wpalm00]

Drop an unfired bullet in the chamber, see if it falls out the barrel.

Haha! Has Sig QC gotten so bad that you are concerned the barrel is over bored?

 

[Control for Smilers]

what muzzle device and can?

Yes they have a 5” 1:5 barrel. Unfortunately, I was on a time crunch and didn’t have time to go through my normal experiments like shooting w/o the can or trying different ammo.

I think you have to try it with can off, and maybe even muzzle device off.