This is typical with my Ruger #1 30-06 breech seating a 211g Pope style baseband bullet.
Ive tried different powders, speeds and various things and it still happens. The bullet length is within stability range according to many calculations.
Just a mystery to me.
I have a 6.5 Carcano shooting plainbase that also tips but groups well even at 200 yards.
"if it was easy we'd let women do it" don't tell my wife I said that!
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Geo,
I am five months into a project to shoot 32 caliber wadcutters at 100 yards. I can get Speer 98 grains HBWC to shoot great in pistols and revolvers at 25 yards, but rifles are almost 5 times larger groups in 32 WCF, 32 H&R and 32 S&W long. Varying powder and charges and loading techniques make no difference.
Ric
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I don't remember the velocity but they were still above speed of sound at 100 according to a Labradar.
But yes in the Mach .8 to 1.0 range .
one other bullet I use is a bit shorter and run at the same velocity doesn't show instability. Its just not as accurate .
in 32-40,35-40 Maynard and 33-47 I shoot similar shaped bullets in the same velocity range with not near as much tipping.
"if it was easy we'd let women do it" don't tell my wife I said that!
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Ric-
I played with HBWC .32 in my Ruger #1 7.62x39.At 50 yards they were "sometimes " ok but at 100 yards I'd miss a 12" paper sometimes.
"if it was easy we'd let women do it" don't tell my wife I said that!
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linoww ... be interesting to see a target of your tipping 3006 at 200 yards ... do they get better ?
ken
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This is a phone image of five shots at 200 meters with my 1949 Marlin 336A .30-30. Bullet is #311041 about 16 BHN and 173 gns. Load is 17 gns 2207/H4198, MV 1500 fps. Calculated velocity at 200 meters assuming BC .210 is 1050 fps. Barrel is 10" twist. Peep sight.
Group was 3.03", but there is some evidence of yaw, especially for the two lower shots. The 50 meter groups that preceded the 200 meter group showed no sign of yaw.
I am theorising that the yaw I am seeing at 200 m is a consequence of the bullet coming back down through the transonic velocity range shortly before it reaches 200 m.
You are only as good as your library.
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Too many variables that aren't mentioned as a cause but the smug marks on the target say you have plenty of fouling on the surface of the bullet as well as the barrel so maybe a change in the amount of lube and a try at different cleaning techniques. Lately I have had some success with those changes and by the looks of your group you have a good load combination just need a little experimentation on the other variables; a life long occupation!
Forrest Gump is my smarter brother.
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Lube is Javelina Schuetzen and I've varied amounts and these were just two bottom grooves.Bore is beautiful with a very slight lube star.
"if it was easy we'd let women do it" don't tell my wife I said that!
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Using the tables at the back of Lyman's Cast Bullet Handbook, 3rd ed., fired at 1500 f/s it is 1147 f/s at 200 yards, not meters. Lyman's is calculated of BC of .220, but not shot over equipment at that range. So in the trans-sonic range at least, but bore conditions with light charges of 4198 can also need looked at.
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I wore the barrel out on a Ruger #1 in 223 and my best bullet and load and for the whole time had a bit of yaw like yours. I learned to ignore it and was happily competitive. It make measuring the groups a bit weird but that was the scorer's problem.
If it works why monkey around with it?
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Look like HBWCs fired from a S&W revolver at 25 yards....
Glenn
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right John, the yaw reaches out and touches the next scoring ring, may help ?????
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I often see this when scoring 200-yard targets during our CBA matches. Sometimes the shooter doesn’t even know his load is doing this until we show him his target.
Tom
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Don't get me wrong I love Accurate molds but I've had the same problem with every 30 cal plain base mold I've gotten from him, 5 to be exact, except a short 165 grainer. I have to believe that at pb velocities the wide meplat is what's causing it since I have no problem with tipping using the pointed bullet I shoot now. With a gas checked bullet running 1800 or so I'm sure the tippers would go away but that's my experience and my conclusion.
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Interesting conclusion.
With rifle in hand, I confidently go forth into the darkness.
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Today at the Spokane CBA match I did poorly with the #1 30-06.My warm-up was under MOA and from there I kept dropping random shots out of the groups.
The match director Mike was shooting fixed ammo plainbase in a 30-06 Ackley and getting right above MOA average with 8g Unique and 314299 plainbase.
I was very impressed with his shooting. One if his 10 shot groups had 9 of them looking to be well under inch.
"if it was easy we'd let women do it" don't tell my wife I said that!
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My 6mm Eagan bullet with flat nose, in a 14 twist, needed a minimum of 2200 fps to be stable. The Mountain Molds copy of the Eagan, except it has a pointed nose, could be stable at lower speeds. It was still stable at 1700 fps when I quit trying to go slower.
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I'd never thought about nose profile and stability. I'll look at my other targets with different nose shapes and look at the holes.
"if it was easy we'd let women do it" don't tell my wife I said that!
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George was your friend shooting the 299 with the check shank or did he have it removed? A 284 with the shank removed powder coated and a bit of taper might be a good one too.
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I think it was an NOE plainbase. he bumped the nose a bit as his bore is fat. Mike is on the forum, maybe he will clarify.
"if it was easy we'd let women do it" don't tell my wife I said that!
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