I just ran into an article about these super heavy 185gr +M 9mms. In the past I loaded some 155 NOE and Lee 160gr over 3gr of W231 in 9mm and I really like how they shoot. Very little muzzle flip, like a mini 45acp, very soft to shooting. I'm curious how these would work.
https://seismicammo.com/
Last edited by marek313; 11-04-2019 at 05:17 PM.
Bet they would be the cast pajamas from a carbine length barrel as far as soft shooting and delivering some thump!
Interesting ! Don't know how they seat that long bullet that deep in the case without it buldging? Maybe using brass similar to 38spl WC brass ??
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It appears to be loaded in a two piece case. This would allow the sides to be the same thickness from the mouth to the base. They could go a deep as they needed to.
I can't find any specs on how fast it is going.
Yes Seismic loads use shell shock cases https://www.shellshocktechnologies.com/technology/
which are stainless with an aluminum base, the stainless walls are stright and no web per say. They also hold a grain or so more powder then normal brass cases. The only way to run 185gr-205gr bullets is by having a boat tail or a bevel base on it to clear the web of the brass case. I have designed 2 cast bullet molds with boat tails that will fit in a standard 9mm brass case and the 185gr is interesting and runs great. I have found some loads that is 800-850fps in my 10.5" DI AR and need to refine them to get the best accuracy from the loads. I also started to use the shell shock cases but it is still a work in progress for both the 185gr and 205gr bullets.
Here are the drawings for the bullets I drew up, I also had Tom at AccurateMolds cut both and they case beautifully.
I'm waiting for the 240 grain load to come out ...
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Do you prefer HP or SP?Originally Posted by gwpercle
I'm waiting for the 240 grain load to come out ...
Before long 9mm pistol manufacturers will be offering fast twist rate barrels for VLD boolits...
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Design a 9mm Volcanic rocket ball, and you won't have any brass to pickup or tumbleI'm waiting for the 240 grain load to come out ...
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