GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Big Bore AirGun Gate => Topic started by: melloroadman on February 22, 2011, 11:15:44 PM
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Of what you can do to save on air and lead for most of your shooting . All I did to the J.H.32 was to set down with a extra spring and the chrony . Started out at 3600 psi and around 185 fpe . More than I need for small game and targets . Did not need to get into hammer weight changes . Just a shorter spring . I now have a rifle that has a fill of 3000 psi and enough energy for paper and small game . It takes about 10 minutes now to go from one level to the other . A quick sight in since I know how many clicks on the scope and I can go from paper to hunting larger game . At the speed that it is still shooting I did have to cast my bullets in a 12 bhn instead of 5 bhn to maintain a sub inch group at 65 yards . Marvin
The bullets
(http://i301.photobucket.com/albums/nn55/melloroadman/IMG_6626A.jpg)
The readings 2 strings per bullet. And as you can see I did not lose energy by going to the harder lead .
(http://i301.photobucket.com/albums/nn55/melloroadman/J%20H%2032%20CHRONY%20READINGS/IMG_67842-21-11JH32.jpg)
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Marvin your slug in the picture looks as perfect as any i've seen of yours before, or anyone elses ever. You have really mastered the fine art of casting. I hope you offer up more info on the hobby, as it will really benefit me and lots of others on this forum.
I sure like hearing about your easy adjustments with such positive results. The JH rifle i have coming opperates off a higher fill pressure than i'll be able, initially to offer it. I was going to try some different spring weights and lengths to see if i can obtain similar results to yours , thanks for the post, Jeff
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What mold is that Marvin ? I'd like one for my .357 Ultra
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Jeff do not shorten the spring that is in the rifle . Until you have a replacement . Jack does not like to sell springs cuts his inventory so I am told . If you pull it out and let me know the specs on it I might be able to tell you were to get another one with the right part number . Or I might have one to sell . Marvin
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That is awesome, thank you so much for the offer of assistance , i'll let you know soon, Jeff
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Manny this is the maker of the mold . Cheap for a custom mold . Does not do phone . But is quick in e-mail service . Molds are not any more than RCBS . If you do not see what you want in the caliber you need he can change that for you as well as the weight . In reality he can do what ever you need even it you design your own bullet as long as you stay in his quide lines for his equipment . The mold number is 36-075 B but you need to tell him the final diameter with the lead you are going to use . I have the mold in 455, 358, and 312 .
http://www.accuratemolds.com/catalog.php (http://www.accuratemolds.com/catalog.php)
(http://i301.photobucket.com/albums/nn55/melloroadman/IMG_6700A.jpg)
(http://i301.photobucket.com/albums/nn55/melloroadman/IMG_6699A.jpg)
(http://i301.photobucket.com/albums/nn55/melloroadman/IMG_6697A.jpg)
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melloroadman that is one pretty mold as are the rounds that come out. Nice work and thanks for the info.
JohnyReb if you get to needing a spring and can't find a premade one let me know. I can make you one. I will be making all the springs for my pcp.
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JohnyReb if you get to needing a spring and can't find a premade one let me know. I can make you one. I will be making all the springs for my pcp.
Hey Pirate, Thank You! it's always great to have offers of help, it makes the upcoming project much easier, i'll be in touch when i get closer to experimenting. thanks again!
That IS a beautiful mold Melloman, i hope you don't mind but i added accurate molds website to the BB info sticky. J
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Thanks Marvin
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How much does the .358 ones weigh?
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Marvin,
Thanks for the nice close-up pics. I don't know much about bullet casting so:
Did you buff or tumble those bullets to get that nice finish.
No visible parting line?
Do you shoot them as-cast or do you push them through a sizing die?
Thanks very much,
Lloyd
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How much does the .358 ones weigh?
75gr
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Yes my .358 are 75 grains but you could have the mold made to cast heavier . No the bullets are straight out of the mold . That is one of the differences of a custom mold and a commercial mold . And temperature of pour has a lot to do with it . But a wrinkle here or there or a frosted bullet shoot well too . Marvin
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I like the way he fly-cuts the vent lines in the mold blocks.
I need to get some molds one for the 909, and some others for the PCP I want to build.