Reeder Custom Guns - Is there a picture of

One of the raptors next to a 204 ruger round? Interested to see how the case changed after fireforming.

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and I've played with 6.5 and 7mm TCU in the past on the .223. Gary has a pretty complete line on .30-30 based rounds. The brass is everywhere, is sturdy, has a truly ample rim for the single shot. I'd seriously recommend you take a look at them. They do have more power and are about perfectly matched in capacity to what you can burn in a handgun effectively.

I have a .256 Raptor that mimics the .257 Roberts carbine. Ditto my all time favorite the 7mm GNR, it is a perfect handgun version of a 7x57. My son has a built G2 in .30 GNR that he thinks is the bomb, I can't argue. He shoots factory .30-30 from Wal-mart forming brass, then he can easily get .300 Savage performance from any .30 cal. bullet he wants. The gun has Pachmayr furniture with sling and swivels, a Burris 2-7X EER scope in Leupold DDT rings rounds out the package. His has an un-ported 13" barrel. He took a Ram at HHC first time out with no drama and it cemented his confidence. That is worth a lot!

Lots of choices and you can get caught up in it. That's the fun part. Later on practicality comes to play. Availability of components, possibility to shoot factory ammo, can really influence enjoyment and determine it the barrel is a keeper. Have fun figuring it all out.

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Not as fancy as waterboy but I gave it a go.

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I know the small bullet would just rattle down the pipe but would it create enough pressure to form brass?

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Many of the GNR rounds can fireform perfectly like that. .30-30/.30 GNR, 7x30/7 GNR etc. You cannot fireform .256 Falcon from loaded .25-35 Win. It splits! As do many reloaded versions of the aforementioned numbers. Once fired the brass can become work hardened, as it can simply with age. Expanding it too much too fast results in splits.

Even firing .22 Hornet to K-hornets sometimes results in neck splits. I have even fired loaded 7.62x39 in an ancient .401 Winchester making rimless brass. It worked too.

Answer; maybe. New ammo may fireform from .204 to .257 Raptor just fine. The TC holds the case by the rim-notch and will fire it for sure. But that is a pretty big jump from .204 to .257 and might split. Sometimes we even anneal brass necks to expand in a step or three up to that .257 just to be sure. Like .22/.243/257 It's better safe than sorry. It's part of the fun too. You can't get a 100% definitive answer but you have to make your own choices given the information.

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the neck is almost impossible. You need to anneal, and then go up in 2 or 3 steps.

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Is there a picture of

204; fireformed 257 Raptor

The .257 Raptor is a classic. I have a .240 Raptor

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Can you fireform using loaded 204’s?

I have experiented with several rounds like that.

So 204 to 6mm more feasible?

making any of the Raptor round without annealing