Can't find ammunition? Go another route: Big Bore Switch Barrel.

mcfred

Sergeant
Full Member
Minuteman
Feb 17, 2011
1,309
605
SW USA
With long range components being hard to find and overpriced, making precision shooting difficult, I've been looking into other ways to have fun. With large caliber cast/swaged bullets in a switch barrel setup you can again use your gorified paperweight to make noise. In my case, I set myself up with a barrel vice, lug and torque wrenches and switched my 26" 7mm barrel out for a ~18" 50cal one chambered in .510WSM.

The only issue with 50cal bullets is that, while they're not hard to find, they are not cheap unless they're 50BMG surplus tips. So I decided to go cast. In general cast bullet BCs suck, they're not especially accurate and they leave pock marks in your range berms. However, they really ring the closer steel gongs, they splatter jugs of water, they massage your shoulder all while putting a big smile on your face.

I didn't want to invest in grease-groove bullets with gas checks and associated equipment so I went another route and got some dead-soft 505gr bullets for paper patching just to experiment. If everything works out I'll probably invest in a melting pot and mold. Afterall, wheel weights are free at most of my local tire shops, paper is cheap and plentiful, and I can usually find magnum pistol powders on shelves when I can't find H4350 or Varget. On top of that I can actually afford to go to the range frequently and shoot 20-50 of these.

Paper patched bullets require a little experimentation, but once you figure it out it's easy to wrap up some lead and assemble some inexpensive rounds. A 41gr low-pressure load of W296 behind a 505gr gift-wrapped slug manages ~1715fps out of my gun and blows confetti like it's New Year's Eve and never leaves any copper fouling! The soft lead has a dramatic effect on jugs of water too. 3800ftlbs of energy stops in just 3' of water and makes pretty mushrooms 1.380" in diameter, nearly 3 times the original size! Heavier loads of slower powder give even more velocity (~1850fps so far) while making a nice flash for good lighting while taking pictures. :D

It's been such a bummer with the ammo/component shortages and I had so much fun this weekend I just had to share. There are alternatives when your favorite precision ammo is unavailable. This Fall/Winter sometime I'd like to go try it out on some pigs down South. I keep hearing how tough they are!

Pics:
freshly rebarreled
510_WSM_porker.jpg


business end
510_WSM_busi_end.jpg


BOOM! Can you see the chrony in there? haha
510_WSM_boom.jpg


crown afterward
510_WSM_muzzle.jpg


Confetti and result of 3' of water
510_WSM_PPshroom.jpg
 
Precision & magnums are fun but "old school" or low tech works well. I have a pair of Sharps rifles with the focus on rolling my own ammo & powder also if needed. I shoot the Postell (Lyman) bullet and a robust load of BP. I pour bullets for both (45-90 & 45-110 use the same. I also pour bullets for my s&w 500 mag which are 600 grains. Both the sharps and my 500's hit like a speeding bus. The sharps is also amazingly accurate.
 
Thanks all for the kind words.

I'll eventually get some 450gr Barnes Originals, 500gr Woodlieghs and maybe some lathe turned solids from Cutting Edge Bullets for mag-feeding, but I'll get the paper patched stuff streamlined first. All those other bullets start at about $1 apiece and go up from there... If you cast your own it costs a lot less, obviously. Eventually I'd like to try some 800-950gr cast (greased, not patched) subsonics and make a form 1 suppressor.

Who is the bullet supplier?
This might work in my .510 Whisper, without the can.

I think the PP bullets came from Buffalo Arms, but to be honest I bought these about 5 years ago and had renewed interest when the price/availability of everything went haywire.

cal50 said:
I pour bullets for both (45-90 & 45-110 use the same. I also pour bullets for my s&w 500 mag which are 600 grains.

Cal50, do you use any smokeless on your cast bullets? If you paper patch, how hard an alloy do you use? These ones are real soft and I think that might limit the velocity before I get significant leading. If I have to work with an ~1800fps speed limit I'll be going up in weight instead of speed.