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7MM Super Mag?
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<Fireball221>
posted
What is it? what case.......what are the balistics like?
Just seen a Barrel for sale in this caliber.
fireball
 
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<IKE>
posted
The 7SM is a .357 Maximum case necked down to 7mm.

Just think of the 7SM as a short necked 7TCU and according to the folks at Sierra you can substitute 7TCU data for the 7SM.

I've got a off the rack 14" factory TC Contender barrel in the chambering that is a absolute tack driver (1/2" 5 shot groups at 100yds) that I some times shoot IHMSA with.

I'm loading Winch. 357 Max cases, WSR primers, 30.5grs of BLC-2, Sierra 120gr #1900, with a OAL of 2.483.

It's a sweet little cartridge.
 
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TCLouis
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Picture of TCLouis
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Have any idea of velocities with this combination?
Wondering if losing that 0.1" of case length is serious!
Well you did say 7mm TCU loading data . . .
Hmmmm?
Any info would be appreciated.
LouisB
 
Posts: 4267 | Location: TN USA | Registered: 17 March 2002Reply With Quote
<Fireball221>
posted
quote:
Originally posted by IKE:
The 7SM is a .357 Maximum case necked down to 7mm.

Just think of the 7SM as a short necked 7TCU and according to the folks at Sierra you can substitute 7TCU data for the 7SM.

I've got a off the rack 14" factory TC Contender barrel in the chambering that is a absolute tack driver (1/2" 5 shot groups at 100yds) that I some times shoot IHMSA with.

I'm loading Winch. 357 Max cases, WSR primers, 30.5grs of BLC-2, Sierra 120gr #1900, with a OAL of 2.483.

It's a sweet little cartridge.
Thank you IKE!! Think I just found my NEXT barrel!
Wonder if the VV Shorty sale is still on.......
Fireball
 
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<Paul Dustin>
posted
FireballBB you might like at this websight I know he has some 7mm super mag listed www.edstc.com/edstc/index.html [Eek!]
 
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