Howdy, again !
Another outside the box project, that featured their Mk 1 round; a .51" cal @ 1,250fps.... once up-to-speed. https://en.wikipedia.org/wiki/Gyrojet
I remember the Gyrojet.....$15.00 a round back in the early 70's IIRC???? And couldn't hit the inside of a barn???
Originally Posted by .357Mag
The problem with these as with all multi-charge, base-bleed, multi-stage, RPG etc type systems is that they lack accuracy. And they're hideously expensive....We build fireworks here, my engineer son is quite the pyro...he's even working on a self-guiding system for pinpoint displays, but at $38.00/shot it ain't worth it to set up your typical 3-second Golden Shower.
I want simple, conventional and proven tech. And cheap bullets.
Lee....it sounds like you're doing some of the same stuff. And what you find is, supersonic is EASY and PLEASANT because you've enough excess gas to brake the system.
Now, on the subject of penetration, big and slow..... it's unbelievable.
I've got a couple acres of lawn in front of my shop/range house. We shoot a lot of stuff right at the lawn. We set up plates and swingers, we have liddle competitons and we hold classes and sometimes we race cans. This last is simple. We paint two lines acros't the lawn maybe 50ft apart. Start with the cans/rubber targets/tennis balls etc set on the line closer to you and try knock your can over the second line before anyone else. There is only one rule, no shotguns allowed. But anything else goes. Sluggunss, 22's, 44Mag's, 45ACP, the little kids shoot Daisy Red Ryders and have an intermediate line to cross........
My point is, I've seen the damage from a LOT of projectiles as they rip and pock the lawn. A 338 will drag up a fist-sized divot before it whines off into the mountainside...a 12ga saboted slug will sometimes tear a foot-long slot. But an 850gr lead slug at 900-1050 is just unstoppable.
I built a little roll in the yard, an area that slopes down to a volleyball court. It starts about 50ft from the shooting area of the shop. Flat, flat, flat out to about 50ft then the ground rolls down about 18"-20" into the volleyball area... I set up my recoil sled about 10PM one night, on the shop floor, shooting out into the night. A couple times I thought I heard ricochets before hearing the slugs crashing thru the trees down by the crick. Didn't think anything of it.......
Next morning headed for work my headlights swept the lawn and WHOAHHHH!!! "Looks like the moles attacked last nite!!!" I walked out into the lawn and there's 3"-6" deep furrows with the sod peeled open like you'd drug a plow thru. FURROWS 10-12ft long! Those biggie slugs were entering the lawn 10ft back on the flat, powering thru 10-12ft of sod and EXITING THE SLOPE to continue down into the trees unabated!
With my toe I rolled the sod back into the furrows and tamped it down. 3days later you couldn't see it.
I've just thought of something.....those 850gr 50cal slugs that burrowed and furrowed the lawn were wound up by a 7.5" twist. Recommended twist is something like 15" or 20"......they were revolving at near 78,000rpm's....
I be betcha' that this is what kept them stable instead of them bouncing out the sod! I mentioned "I thought I heard ricochets" which is true....but they were not the typical VrrRMMMM!! just subtle flutter....
Whatever it is, these pertickler slugs burrowed like linear gophers and came out on the same plane. And still made it to the treeline 180yds downrange with a crash and a bang...
Please take as info only ...... " base bleed" tech for artillery rounds not same execution / result as " RPG " rounds.
Why thank you Greg I'm glad you're enjoying my musings...
Originally Posted by 404tbang
I'll put AlinWAMMMM!!! on my list alongside "Sussurus" and "Airborne Pathogen" and "Covert Interdiction" and "Butterfly Stomp"......or, from My Jackpine Savage friends...."beerfart" (SBD).....LOL.....yeahh, I'm having fun with it.
BTW here's another video I found off yours. I'm guessing with that fat barrel it's weighing 13-15lb ....this looks to be kicking a little more like mine do LOL....he's making it look like he's enjoying it....
Originally Posted by alinwa
I very much enjoy reading your post, also ! Lively & informative !
After reading and relating as best I can to this thread, I feel more comfortable inside my box.
You guys keep it up. I am enjoying the discussion from my box.
I am liking it also, but what's not to love about inventing some thing new and the experimentation that goes with it!!!!! Any chance we could see a picture of this beast?
pix of the round(s) on page 1, and of the brake. At this point my test-mule guns are just a Sav 110-ish thing, a Wby chassis and a Rem700 all with aluminum slideplates. I guess I've also screwed a bbl onto one of my TAC338's and tested a bunch of 338L based rds (kindofa' 510 Whisper type thang but I can't say that name or use a Whisper reamer without paying royalties....so I don't) I won't put together a real one until I've gotten the feel I want.
Originally Posted by ebb
And I won't do a Whisper.
And since't I don't want to pay Rick Jamison I won't use the WSM-based one neither LOL....
It's the principle, not the money y'see.....