It's cool to have some of these oddball calibers & wildcats. The 7mm x 300 wby would probably be one of the more useful if a person wanted to go that way, but again like it was said there is already cartridges out there 7mm stw & 7mm ultra. I would rather see how accurate I can make it and If needed sacrifice a few fps. Think about it another way usually more expensive dies, one off calibers dies in the hundreds of dollars let alone the chamber cutters, more headaches, may not be as accurate, may only gain a slight fps over existing calibers, may gain substantial fps over anything out there and still run into problems with bullets. Powders and bullets not adequate for extreme wildcats that won't reach their potential. Some friends have made 25 x 300 ultra mags in 30" barrels oh yea they will make mid 4000 fps with 100 grainers, but at a cost i.e. no suitable powders available for this over bore wildcat & lack of suitable bullets. Yes powders can be made & blended in huge lots for a price. I do agree if it's something that someone has wanted then by all means go for it. Bragging rights if you will, and so what if it burns a barrel out in 500 rounds at least you know about it going into it.
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