6mm-300wsm

[summitsitter]

Just finished my 6.5-06AI and ready to start another project.
How about a 6mm-300wsm.
I love my 270wsm and I think the 6mm could be bad ass. Plus I think I can use the 270wsm bushing die and neck it down without having to buy custom dies. Anybody got any experience with this cartridge.

 

[wadebrown]

Re: 6mm-300wsm

I built its bigger brother, 6.5 WSM and it shot great until about 500 rounds and accuracy went south. If you can afford barrels at that rate it was a great round.

 

[summitsitter]

Re: 6mm-300wsm

I got a 270wsm and I think the 6.5 would be to close to identical.

 

[bohem]

Re: 6mm-300wsm

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: summitsitter</div><div class="ubbcode-body">I got a 270wsm and I think the 6.5 would be to close to identical. </div></div>

How do you like that 6.5-06 AI? I can't wait to get going on my striaght 6.5-06. Too much work, not enough play time...

On the topic though, I am not entirely sure what the 6mm/270 WSM is really going to buy you over something like the 6mm Crusader or a 6mm Rem AI.

It's so incredibly overbore that you're going to burn barrels out like crazy, as was mentioned. I'd expect you will see about the same kind of velocities that the 6mm AI would get you since the powder capacity is in the same ballpark. The 115 DTACs going 3400 fps from the AI are incredibly flat. You will get to a point of diminishing returns, you need a minimum twist rate to stabilize those heavy 6's, and as the speed increases you're going to start getting above the point where the bullet can hold itself together.

You might actually be able to get the 105+gr 6mm's going fast enough to stabilize them in a 1:10 or 1:11 barrel though, so they might survive at those twist rates.

 

[summitsitter]

Re: 6mm-300wsm

I have not shot the 6.5-06AI yet jsut loaded up about 40 rounds to firform last night. I'll let you know how it turns out in a week or so.

 

[gmbjr]

Re: 6mm-300wsm

After playing with my 6.5wsm for a few years, I honestly cannot imagine trying a 6wsm. The 6.5 is on the edge. A 6mm version would probably be over the edge.

 

[deadeyeky]

Re: 6mm-300wsm

over what edge?grand canyon or curb? lol

 

[summitsitter]

Re: 6mm-300wsm

okay if decided to go with the 6.5wsm could I use the 270wsm bushing dies to form it. Saving on the expensive custom dies.