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Some 6mm wildcat ideas

As Mulligan has suggested, short and fat, and why I went to
shortening the 284 Winchester brass for heavier bullets. I would
also suggest getting some of that 450 Bushmaster brass for your
early work. Right now Peterson is the only 284 brass available, and
that's even hard to find. Starline has Bushmaster brass, so at least
that would get you to work on the initial trial and errors before a
a big commit......I have some of my 284-ELF brass I could send you
as samples to play with, forming wise.
 
Fuj said:
As Mulligan has suggested, short and fat, and why I went to
shortening the 284 Winchester brass for heavier bullets. I would
also suggest getting some of that 450 Bushmaster brass for your
early work. Right now Peterson is the only 284 brass available, and
that's even hard to find. Starline has Bushmaster brass, so at least
that would get you to work on the initial trial and errors before a
a big commit......I have some of my 284-ELF brass I could send you
as samples to play with, forming wise.
Click to expand...
That’s up to you sir.
 
How bout necking down a 6.8 SPC to 6MM?
And I'll add, no shoulder angle change, (NADA) just neck down to 6MM and see what you get.
I built a 6.8 SPC on a Savage action, nothing fancy and it shoots bug holes so the 6MM SPC has potential. :D
I even built a 6.8 BR. Necked up a 6MM BR case to 6.8, stuffed a bullet in it and shipped out to have a reamer made from it. The 30 BR was the hot item then so I thought, why not a 6.8 BR? Turned out to be a first in that caliber for a reamer. Another low recoil bug hole shooter.
 
Last edited:
sandwarrior said:
Always the .243 WSSM if you need a short case. That's if you can find brass. Use slow powders or you will build pressure too fast and not much exceed a .243. 4831, H1000, RE22, RE23~ish speed powders.
Click to expand...
I'm shooting a 25 WSSM. These powders are way too slow for the case capacity.
You're getting into some fairly high compressed loads with RL19 & 4831.

RL17, H414 speed is where you're looking for the WSSM case.
 
std7mag said:
And I understand the want to do a wildcat.
But isn't the whole recoil management vs energy retention the reason a lot of silhouette shooters went to the 7mm-08
Click to expand...
Kind of. But that was a while ago when the technology wasnt so advanced which then led a lot of shooters to switch to the 7br which was near perfect until the availability stopped. The 7-08 doesn’t help on recoil at all unless you load it down to feel like a 7br. The popular cartridges now are 6br, 260, 6.5br, 6.5x47
 
Fuj said:
The 130 SMK was the bullet for the 7mm. Unfortunately, Sierra stopped
producing them and I bought out their last remaining lot, and it was a
short run......The 150 SMK's I had shooting in the 3's with an 11.5 twister.
Although recoil is back in the picture. The only other bullet I can think
of is the 140 Berger, but frankly, I could not get it to shoot as good as
the SMK in any of my rigs. But again.....recoil management.
Click to expand...
they have the 130 smk closed nose at several places now, a bunch at Blue Collar Reloading
 
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