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Stewart117
11-26-2018, 02:14 PM
I have a barrel on order with a groove to groove diameter of .620, and i have a bullet mold that casts bullets .625 and some swaging stuff to make jacketed bullets .624. Would these bullets be too big to push through my barrel, or will they be alright to shoot?

farmerjim
11-26-2018, 05:36 PM
Slug the barrel when you get it. I doubt it will be exactly .620.

45-70 Chevroner
11-27-2018, 08:42 AM
That's a really large caliber, what is it? Pistol, Rifle?

mdi
11-27-2018, 12:27 PM
I think I would get a sizer in .622"-.623". I doubt if there would be any problems using a lead bullet even .005" over groove diameter, but I would start smaller, mebbe .002" over and see how that performs...

I read somewhere (J.Brennan's "Cast Bullets..."?) that it was common for that Schuetzen shooters often went .005"+ over for their cast bullets...

Stewart117
11-27-2018, 03:22 PM
It is a 20 gauge on steroids. And i am building the rifle first and if i the recoil isnt too terribly bad i do have plans to file a tax stamp with the atf for a pistol version and have already drawn up the plans to machine the pistol in the same caliber. It should be equivalent to a 600 nitro express give or take.

Mal Paso
11-27-2018, 08:19 PM
Single shot pistol? I'm guessing ice packs between follow up shots so semiauto would be too much.

Stewart117
11-27-2018, 09:20 PM
Yeah it would be a single shot underlever style pistol with an 8" barrel. Possibly a muzzlebrake, i haven't decided yet. The rifle i am planning on shooting 3" and 3.5" cases, the pistol would most likely be 2.5" and 3". I currently have a mold to case 550gr bullets and 700 grain bullets. And if they aren't too bad i plan on getting a mold for 900-1000gr. The velocity i want to get out of the rifle is about 2800-3000 ft/s. And probably half that in the pistol.

Stewart117
11-28-2018, 04:57 AM
231130
Here is a picture of the 3" cases loaded with a 550gr bullet (right) and a 700gr bullet(left)

Texas by God
11-28-2018, 09:34 AM
Yeah it would be a single shot underlever style pistol with an 8" barrel. Possibly a muzzlebrake, i haven't decided yet. The rifle i am planning on shooting 3" and 3.5" cases, the pistol would most likely be 2.5" and 3". I currently have a mold to case 550gr bullets and 700 grain bullets. And if they aren't too bad i plan on getting a mold for 900-1000gr. The velocity i want to get out of the rifle is about 2800-3000 ft/s. And probably half that in the pistol.With all due respect, I think you are hallucinating with your velocity expectations. Look up .50 BMG ballistics for a reality check.

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Wayne Smith
11-28-2018, 11:26 AM
How recoil resistant are you???

Stewart117
11-28-2018, 12:24 PM
Texas by god. Look up the 12 gauge from hell. That is what I am shooting for. I have talked to one of the people who came up with it and he has given me some advice and load data for it. I dont know the max velocity he has achieved with his 12 ga. But i have seen posts where he got 3900 fps with sabots in it.

Stewart117
11-28-2018, 12:30 PM
Wayne smith. I guess i will find out. I have shot some very stout 12 gauge loads from a lightweight gun. 3 ounce slug over 120gr of black powder. Ive shot both barrels of a double barrel 12 with magnum slugs, buckshot, and turkey load and both barrels with any of it couldnt even come close to the recoil of the one round from my single.

mdi
11-28-2018, 12:41 PM
Doin' any T-Rex huntin' in your area?

Stewart117
11-28-2018, 12:52 PM
Mdi, No but i'm concerned that i can't humanely take down some of these paper targets around here with what i have

Grmps
11-28-2018, 01:00 PM
AHH to be young/resilient and not have an abused body again :)

Now I'm happy if I can get up without sound effects :bigsmyl2:

Sounds like you would like a 50 AE I loaded up some for a friend (for predator defense he used it to kill a charging Griz in Alaska that wanted the moose he was skinning)

I did a ladder test with H110 and a 380 grn boolit. at around 30 grns of H110, that thing was plain brutal. An ejected case came back and blackened both his eyes [he ALWAYS wears safety glasses now LOL].

Stewart117
11-28-2018, 01:33 PM
I used to have a 50 desert eagle but i traded it in for a ps90 for the wife. I have worked up some pretty brutal loads in my 500 magnum. And i have a 45-70 derringer that is the most punishing pistol i have ever shot. I even had a friend shoot it and it jumped out of his hands and hit him in the head hard enough to make him bleed.231143231144231144231145

Texas by God
11-28-2018, 08:05 PM
Texas by god. Look up the 12 gauge from hell. That is what I am shooting for. I have talked to one of the people who came up with it and he has given me some advice and load data for it. I dont know the max velocity he has achieved with his 12 ga. But i have seen posts where he got 3900 fps with sabots in it.Sabot is the key word there I believe. I Don't think you're going to get a 700 plus grain bullet up to 3000 feet per second from a brass 20 gauge case.

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GregLaROCHE
11-28-2018, 08:47 PM
I used to have a 50 desert eagle but i traded it in for a ps90 for the wife. I have worked up some pretty brutal loads in my 500 magnum. And i have a 45-70 derringer that is the most punishing pistol i have ever shot. I even had a friend shoot it and it jumped out of his hands and hit him in the head hard enough to make him bleed.231143231144231144231145

Was that you and your son shooting that .45-70 Derringer on YouTube. Well, whoever it was, they didn’t shoot many!

Mr_Sheesh
11-28-2018, 09:06 PM
Grmps - It really helps reduce the sound effects when you cram your fingers into your ears and chant "LA LA LAAAA I CAN'T HEAR YOU!" over and over, while attempting to stand; Down side is that your hands won't be supporting you, so you can end up face down on the floor. So MAYBE I'll try earpro next, with the chanting. I'll keep you apprised :P

Stewart117
11-28-2018, 10:09 PM
Greglaroche i dont have any videos on youtube and dont have any kids. You are thinking of big daddy hoffman. That video is what made me want to get this. But his gun has much bigger and heavier grip than mine. Neither of these are my gun. Just posting to show how small my grip is compared to his.231152231153

Stewart117
11-28-2018, 10:25 PM
Texas by god. The 12 gauge from hell started out firing a 1000gr bullet at 3000fps. So i doubt my 550gr bullet will be that hard to get to that speed. And possibly the 700gr bullet as well. But as long as i can get them close to that range i will be happy.

GregLaROCHE
11-29-2018, 01:02 AM
Greglaroche i dont have any videos on youtube and dont have any kids. You are thinking of big daddy hoffman. That video is what made me want to get this. But his gun has much bigger and heavier grip than mine. Neither of these are my gun. Just posting to show how small my grip is compared to his.231152231153

Do you use full loads in it? It must be fun to have. What kind if accuracy can you get at 25 yards?

Stewart117
11-29-2018, 02:08 AM
Greglaroche i use winchester super x ammo or rounds i loaded with black powder. But i lost the 45-70 dies among most of my reloading rquipment in a house fire 2 months ago so its only the winchesters for a while. And the curved grip of the gun makes it very difficult to hold onto so its pretty hard to hit a target smaller than a full size silhouette at 25 yards. Atleast for me or any of my friends.

Texas by God
11-29-2018, 09:00 AM
Stewart117- I googled it; still skeptical but please build it and report your results on this "young cannon". And put money aside for medical bills from plinking injuries from the handgun.

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bikerbeans
11-29-2018, 09:11 AM
I have a barrel on order with a groove to groove diameter of .620, and i have a bullet mold that casts bullets .625 and some swaging stuff to make jacketed bullets .624. Would these bullets be too big to push through my barrel, or will they be alright to shoot?

Stewart,

I cast fullbore solid base 12ga slugs that weigh 690 grains. Driving bands are 0.734 to 0.736. I shoot these slugs through a rifled barrel with a 0.727" groove diameter without any problems. The oversize slugs help center the round in the chamber.

BB

Stewart117
11-29-2018, 11:36 AM
Stewart,

I cast fullbore solid base 12ga slugs that weigh 690 grains. Driving bands are 0.734 to 0.736. I shoot these slugs through a rifled barrel with a 0.727" groove diameter without any problems. The oversize slugs help center the round in the chamber.

BB

Thank you bikerbeans. Any experience using copper or brass jackets in it?

bikerbeans
11-29-2018, 10:58 PM
Thank you bikerbeans. Any experience using copper or brass jackets in it?

Stewart,

Yes on jacketed. Fury Custom Bullets (CB vender sponsor) makes full bore jacketed slugs for 12ga. The cores are slaged lead and soft. Off the top of my head i don't remember the ID. If you want more info contact Uncle Dino (CB forum name, Dennis Kratz) of Fury. Fine man to deal with.

BB

Stewart117
11-30-2018, 05:06 AM
Stewart,

Yes on jacketed. Fury Custom Bullets (CB vender sponsor) makes full bore jacketed slugs for 12ga. The cores are slaged lead and soft. Off the top of my head i don't remember the ID. If you want more info contact Uncle Dino (CB forum name, Dennis Kratz) of Fury. Fine man to deal with.

BB

Biker beans. I checked out fury, and the jacketed 12 gauges they offer are .729. So I may order some when i make a 12gafh. But i am still unsure about using oversized jacketed bullets.

Stewart117
12-21-2018, 11:16 PM
I got the barrel today and slugged it. It is exactly .620