6 mm Creedmoor chamber offerings?

[acloco]

Seems that there is 4 different flavors of 6 mm Creedmoor chambers available.

What works best with 103 to 115 gr bullets?

6 mm creedmoor
6 mm creedmoor VLD
6 mm creedmoor MT

....and the last chamber, evidently, there is a throat length difference between 1:7/1:7.5 and 1:8 twist.

Suggestions? Do not plan on shooting ANY factory ammo thru this barrel.

 

[jepp2]

What works best with 103 to 115 gr bullets?

Haven't encountered the other variations you list. Most of mine are 8T and I have 1 with a 7.5T. I can shoot the 115's in any of mine, but I shoot at elevation. The Berger stability calculator doesn't provide 1.5 stability until I get close to 5,000 feet elevation. I prefer the .275" neck as it works the brass less (especially if you use bushing or hone your die necks). I tend to use the .190" FB

 

[David Milisock]

Not to hijack this thread but what velocities are you getting and are you using a short action?

 

[urbanrifleman]

6mm creedmoor Sammi regular old standard Hornady chamber is ideal.

 

[acloco]

Not to hijack this thread but what velocities are you getting and are you using a short action?

Staball and 105 Nosler's exit at 3175 in 26" barrel. Is NOT a top powder charge.

 

[Hotshot]

6mm creedmoor Sammi regular old standard Hornady chamber is ideal.

I'm shooting an 8twist with standard chamber. 105 Amax shoot spectacular groups. I'm more of a fast and flat guy for prairie dogs. I really like the ballistic table for 87 Vmax but I couldn't find any so I tried 75 Vmax. Shoots 2 inch groups at 500 over and over again. Now I have 87's but I don't think I will even try them.

 

[whatsupdoc]

Had two 8 twist barrels that worked very well with 105's but for 115's I would go with a 7.2 ish twist.

 

[urbanrifleman]

I'm shooting an 8twist with standard chamber. 105 Amax shoot spectacular groups. I'm more of a fast and flat guy for prairie dogs. I really like the ballistic table for 87 Vmax but I couldn't find any so I tried 75 Vmax. Shoots 2 inch groups at 500 over and over again. Now I have 87's but I don't think I will even try them.

I wish you would try them and tell me how you got them to shoot

 

[whatwind?]

7.4 twist for 115’s
7.77 for 109’s
8.02 for 105’s

 

[jhunter]

.183 freebore for 1-8” twist and faster

 

[acloco]

Thanks to everybody for the input.

Just surprised to see several different chambers available for a relatively new cartridge.

Freebore was my issue with twist rate as a second consideration.

 

[urbanrifleman]

Thanks to everybody for the input.

Just surprised to see several different chambers available for a relatively new cartridge.

Freebore was my issue with twist rate as a second consideration.

Sammi spec 6 Creed was set for long bullets at 183 thou from day one. It did not evolve from light bullets to heavy bullets over time like older designs.