Thread: Keeping the 7mm ahead of the 30 cal?

Yes being supersonic at 3000 sure does depend on the BC and speed you use. Both have to be a lot higher than we will be able to achieve at present with CE bullets and the cheytac case. Tell me what pressure are you at with the 425 exceeding 3035?

Originally Posted by L.R

Yes being supersonic at 3000 sure does depend on the BC and speed you use. Both have to be a lot higher than we will be able to achieve at present with CE bullets and the cheytac case. Tell me what pressure are you at with the 425 exceeding 3035?

Please don't go there again with the pressure thing aye, it was thrashed out quite well here

http://www.nzhuntingandshooting.co.n...62/index2.html

I'm not trying to say that you are over loading or anything like that. You are free to load to any pressure you feel is safe. I'm just wondering how much more pressure it takes to get a projectile that is 25 gr heavier than the one I'm shooting at a higher velocity through the same barrel and action, and I'm not positive but I'm guessing a slightly Lower capacity cartrage.

Originally Posted by L.R

I'm not trying to say that you are over loading or anything like that. You are free to load to any pressure you feel is safe. I'm just wondering how much more pressure it takes to get a projectile that is 25 gr heavier than the one I'm shooting at a higher velocity through the same barrel and action, and I'm not positive but I'm guessing a slightly Lower capacity cartrage.

Time will tell there will be another one going very soon so there will be three lots of data for the Cheytac parent case, with the same barrel

As to who has the biggest case capacity I don't really care

Your right there I don't care who has the most capacity either. All I know is that you are driving a much heavier projectile faster than me and I want to get some info on how, before I race off and build a bigger chambering that does actually beat a 338 version, because at the mo my 375 wont

Originally Posted by L.R

Your right there I don't care who has the most capacity either. All I know is that you are driving a much heavier projectile faster than me and I want to get some info on how, before I race off and build a bigger chambering that does actually beat a 338 version, because at the mo my 375 wont

Have you fired it yet ?
Do you have dies etc to reload for it ?
The VM doesn't seem to be living up to expectations & requires a long barrel to produce any speed much over a 375-408 imp.
I have wanted to build one for years, esp after seeing a case, but what action, barrel, dies, powder etc etc etc, so I didn't.
The 375/408 is fairly expensive the VM will be worst.
I will post up more info on the 375 DCM once I have done more testing & got it back from slack couriers.......