Thumbcocker
Active Member
Outstanding!
Swedish Mauser!
- Thread starter Ian
- Start date
Ian
Notorious member
IMR 3031 worked well too. I am powder-coating the bullets, which makes getting results a lot easier. The only reason I even attempted cast bullets again for this rifle is the potential shown by powder-coating for other chamberings without using thick brass or any special tricks. And so it seems to be for the Swedish Mauser, though I must admit the usual 1.5 MOA/ten shots at starting jacketed load levels without much work is more like 2 MOA with this one, at least when pushed to 90%.
I think adding buffer would improve things a lot, but I really don't want to go down that road again. I got a couple of loads that shoot to the sight-in point of my jacketed 160-grain jacketed loads using full-length sized 6.5x55 brass and no exotic loading techniques so I'd say the powder coating technique lives up to the hype.
I think adding buffer would improve things a lot, but I really don't want to go down that road again. I got a couple of loads that shoot to the sight-in point of my jacketed 160-grain jacketed loads using full-length sized 6.5x55 brass and no exotic loading techniques so I'd say the powder coating technique lives up to the hype.
Bret4207
At the casting bench in the sky. RIP Bret.
So standard 6.5x55 brass, a bullet as fat as you could get it, no exotic powders/duplex loadings, production mould and powder coating to gain some more diameter. Did I miss anything? Your goal was a decent load at 2.2K and you're hitting in the high 2.4's! What next? I'm not familiar with Hybrid100 at all but it looks slower than 3031 by a good margin. Different powder or tweaking the loads your playing with?
fiver
Well-Known Member
500?? meh slackers.
you know, this reminds me of that 4831 load i worked up and passed on to Walter who did shoot it at 500 yds.
just out of curiosity i'd probably have to keep going slower and slower on the powder [22-25-26] just to get the case full, then dick around with some primers [or just go straight to federal's since i know those light off the RL powders nicely]
all in the interest of bringing the speed back around towards 2200 or so again.
yeah,yeah i know,,,, slower easier launch but more muzzle pressure.
you know, this reminds me of that 4831 load i worked up and passed on to Walter who did shoot it at 500 yds.
just out of curiosity i'd probably have to keep going slower and slower on the powder [22-25-26] just to get the case full, then dick around with some primers [or just go straight to federal's since i know those light off the RL powders nicely]
all in the interest of bringing the speed back around towards 2200 or so again.
yeah,yeah i know,,,, slower easier launch but more muzzle pressure.
Bret4207
At the casting bench in the sky. RIP Bret.
It wasn't the work being done that was...questionable. It was the secrecy, voodoo, blood letting of virgins under a Blue Moon, incantations in long dead languages and the hissy fits over RPM limits that made it ridiculous. I went back and forth for some time with a couple of people via PM on the subject and once I started to see where it was all headed I just kind of gave up, despite numerous claims of "one hole groups" by one of the participants. Ians work seems far more likely to be a workable answer, and it fits with the paradigm of FIT IS KING, which seems to be the one constant in this game. I'll be interested to follow this and see where he can take it from here. I'd be ecstatic if I could get his results, but this is more an academic thing for me than something on my "must do" list. This is the type of puzzle Ian seems to delight in solving.
waco
Springfield, Oregon
High velocity cast .308 @ 500 yards
The results are so so. A big thank you to all who have helped me out with this process. Fiver, Ian, Brad, Popper, Ben, Dan, 35 Shooter, I'm sure I missed some guys. I'm sorry. So. Here are the first attempts at shooting cast .308 bullets at a 12" square steel target at 500 yards. I have learned...
www.artfulbullet.com
Ian
Notorious member
The carefully fireformed '06 brass with necks turned for minimal clearance with fat bullets from a lapped 266469 mold, just the right amount of powder and buffer with just the right compression, and water-quenched 50/50 alloy got me right at MOA for ten shots at 2200 fps previously. Took about 5-600 rounds to get it right and once I did, I quit that nonsense. Never got one hole groups at 2400 but close enough for me and far better than most people ever did.
Ian
Notorious member
I 'splained why in the post prior.
Couple neat things about powder coating rifle bullets is the ability to maintain reasonable groups at jacketed velocity with nearly jacketed bullet tolerances and no engrave failure on either the leading or trailing edges.
Bret4207
At the casting bench in the sky. RIP Bret.
Huh, I'm not seeing anything related to that outside of your not wanting to go that route. I get the basic idea of fitting the brass to the chamber, but the whole idea seemed to imply that the chambers were odd when fitting the bullet to the throat/groove was the issue. It was probably well explained years ago but didn't "click" for me. Not unusual. One of the curses of ADD.
PCing still appeals greatly to me, so many pro's and few con's. Perhaps when I run through the mass of prepped bullets sitting in their coffee cans and ziplocs...
PCing still appeals greatly to me, so many pro's and few con's. Perhaps when I run through the mass of prepped bullets sitting in their coffee cans and ziplocs...
Ian
Notorious member
Thick necks with minimal loaded clearance.
The purpose of reforming '06 brass was reducing total loaded chamber neck clearance to nearly nothing so as to prevent the bullet getting a crooked start from behind. Proper brass (Norma, PPU, and Lapua) has necks in the .014-15" thickness range and correct head diameters. Most U. S. A. commercial brass is made on '06 equipment and has necks around .012-.013". Even with Lapua brass and .2665" bullets my loaded neck clearance is about .006" which is more than triple what uncoated bullets can tolerate past about 1700 fps. .018" after forming military '06 brass is what I had to have for my work before even with .268" cast bullets and had to sand a taper on the necks to fit the chamber the whole length of the neck.
Not doing that again, which is why I put it away until the advent of powder coating and my high-velocity exploits with the technique in other chamberings.
The purpose of reforming '06 brass was reducing total loaded chamber neck clearance to nearly nothing so as to prevent the bullet getting a crooked start from behind. Proper brass (Norma, PPU, and Lapua) has necks in the .014-15" thickness range and correct head diameters. Most U. S. A. commercial brass is made on '06 equipment and has necks around .012-.013". Even with Lapua brass and .2665" bullets my loaded neck clearance is about .006" which is more than triple what uncoated bullets can tolerate past about 1700 fps. .018" after forming military '06 brass is what I had to have for my work before even with .268" cast bullets and had to sand a taper on the necks to fit the chamber the whole length of the neck.
Not doing that again, which is why I put it away until the advent of powder coating and my high-velocity exploits with the technique in other chamberings.
Bret4207
At the casting bench in the sky. RIP Bret.
Ah, okay, now I see. To be honest, I think all my 6.5x55 brass is Norma stuff at least 45 years old now. I'll have to see If I can remember to take a measurement.
You know, it's kind of funny that we've had people resort to turning necks so they could shoot a fatter bullet, and yet others have looked for thick necks AND fatter bullets. It's never simple, is it? Well, maybe PC IS making it simpler! I will look forward to see where you go next with this.
You know, it's kind of funny that we've had people resort to turning necks so they could shoot a fatter bullet, and yet others have looked for thick necks AND fatter bullets. It's never simple, is it? Well, maybe PC IS making it simpler! I will look forward to see where you go next with this.
Charles Graff
Moderator Emeritus
made in China
New Member
Hi, I fitted a Swedish 6.5x55 barrel to a 1910 s. r. Mexican '98 Mauser , bedded it into a F.G. M14 stock with the G.I. folding butt plate & put the Mexican tri color fore end , got a lot of coments at Markham park Fl.