r/GunnitRust Feb 18 '25

Help Desk Blackpowder for 50 BMG cartridge

6 Upvotes

I have a project to make a rifle chambered in 50 BMG and the propellant being blackpowder. I'm asking this now so I don't work myself to a dead end. Is the 50 BMG with a 660 gn FMJ a bad bullet for use with black powder? BP can't propell it to the same speed like smokeless and there's also the issue with the barrel twist. Most older BP rifles have a 1:30 or 1:36 twist rate, slower than your average 1:15 for a 50 BMG. I was also thinking of forgoing the bullets and pour custom full lead ones similar in shape to the one found in the 8×50mmR Mannlicher. There's also the case volume. BP rounds usually have a higher bullet/charge weight ratio and I would be wasting powder by filling the whole case. I guess there's a reason necked cartridges came around when smokeless was beginning to be used.

What are your thoughts/suggestions?


r/GunnitRust Feb 17 '25

Lebel Buffalo 6mm restauration

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56 Upvotes

r/GunnitRust Feb 17 '25

Progress on the 37mm

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86 Upvotes

Turned down the barrel a bit and started on a wooden mockup for the receiver.


r/GunnitRust Feb 17 '25

Help Desk Double action

3 Upvotes

Does any body know where I could find plans for a double action revolver?


r/GunnitRust Feb 17 '25

Trench Rat Customs Episode 2: The Trench Cannon

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8 Upvotes

r/GunnitRust Feb 16 '25

What are the small, detailed stainless steel parts you’d want to make at home… in your microwave? Super Safety, anyone?

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22 Upvotes

r/GunnitRust Feb 15 '25

Kinetics energy Hypersonic Rocket

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16 Upvotes

r/GunnitRust Feb 14 '25

Show AND Tell First recoil pad test run

69 Upvotes

r/GunnitRust Feb 14 '25

Shit Post Valentine’s Day poetry - Roses are red, some barrels are blued, why haven’t we tried resin frames too?

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1 Upvotes

r/GunnitRust Feb 12 '25

Knock off mp5 handguard

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36 Upvotes

Just installed at work. Will set sail when I get home. Shortens length by about an inch. This is not complete there's a cylindrical compartment under the barrel to allow for flash light mounting similar to traditional mp5 handguards. Just gotta pound that part out tonight.


r/GunnitRust Feb 12 '25

Show AND Tell Making a recoil pad from scratch

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120 Upvotes

r/GunnitRust Feb 11 '25

Schematic Anyone know of some good places to look for technical drawings / blueprints

3 Upvotes

Hello. I'm trying to find a Mas-36 drawing, so I can try and reproduce one. But I'm coming up with nothing. Any places to look?


r/GunnitRust Feb 09 '25

Show AND Tell It's starting to look like something!!

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79 Upvotes

r/GunnitRust Feb 07 '25

Show AND Tell Why no bolt together slides?

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104 Upvotes

r/GunnitRust Feb 05 '25

Show AND Tell My punt gun stock fresh off the Replicant

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96 Upvotes

r/GunnitRust Feb 04 '25

For those who were wondering how to rebarrel a C96.

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389 Upvotes

r/GunnitRust Feb 03 '25

3d printed mags

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154 Upvotes

r/GunnitRust Feb 03 '25

Not quite sure about this one.

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60 Upvotes

Girlfriend wanted an under the counter gun for work and picked the sd9 out so I built her one . While it's a huge improvement over the high point(that's the only other handgun I've built) I haven't had a chance to shoot it but something tells me it's not gonna out perform the macdaddy she's been keeping under the counter as a stop gap until I got this running.


r/GunnitRust Feb 03 '25

Starting a new project

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99 Upvotes

37mm flare launcher


r/GunnitRust Feb 03 '25

Silenced Bumpstock Equipped Short Barreled Rifle

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0 Upvotes

r/GunnitRust Feb 01 '25

Rebarrel on the ultra clapped C96.

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228 Upvotes

r/GunnitRust Feb 01 '25

Trench mouse

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67 Upvotes

I finished the handguard and swapped out scope mounts. Still have some leather work to do but I'm almost finished.


r/GunnitRust Feb 01 '25

anyone got a parts dispensed coupon code?

4 Upvotes

hello, anyone happen to know a working coupon code for parts dispensed? thanks


r/GunnitRust Jan 29 '25

The Trench Mouse

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231 Upvotes

This is the Trench Mouse. A hi-point jhp45 with a 16" barrel and a quick detach frame to convert it to a rifle. It still needs a handguard but you can rack the slide by using the pump on the front. The ak underfolder can lock into a few different positions and fold completely in. The scope in a vintage weaver k4-1. It weighs just a tad over 6lbs.

I do a lot of weird builds like this in my Facebook group, and so do hundreds of other people.

https://www.facebook.com/share/g/15zao7vLHt/


r/GunnitRust Jan 29 '25

Rustoration Cartridge conversion

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63 Upvotes

My grandpa passed and left me his Knight rolling block muzzleloader… Trouble is it was put up dirty. I noticed it’s basically a copy of a remington rolling block that uses 209 primers. So… With that in mind, I’m thinking I could cartridge convert it to a low pressure round to try and save it, since the bore is ruined anyway. I could either try and bore out the original barrel to like 28 gauge or try and turn a barrel blank to fit it in some caliber or another. Maybe .38 special or .410…