Bart B. said:Yes, I think a barrel maker can make a hummer. All it takes is a perfectly homonegous stainless steel barrel blank gundrilled, reamed, rifled and lapped to zero tolerances in bore, groove, land shape and twist rate with a uniform finish smoothness. It's perfect in every sense. In my opinion, that's a hummer barrel; at least to start with. They'll deform and unbalance bullets the least.
What the 'smith does chambering, crowning then fitting it to the receiver then the fitting the receiver to the stock as well as what the reloader does making ammo for it and the shooter does holding, aiming and shooting it at a target ends up being, it may well shoot in the sevens instead of the zeros.
On the other hand, the more imperfections there are in the finished barrel to start with, the harder it is to make it shoot like hummer's do regareless of how it's managed thereafter.
Last big issue of such thing's I'm well aware of is when Al Hauser(?) retired from Hart Rifle Barrels in the late 1980's or thereabouts. He made most of the "hummer" 30 caliber barrels used in NRA match rifle competition and they had a long track record of winners and records set with them. I think he made a lot of the smaller caliber ones back then, too. That's when the top ranked competitors switched to Kreiger barrels. But some other good ones came out at the same time.
By the same token, "hummer" ammunition will not shoot in the zeros in a barrel that's not also a hummer (I've heard worst of these types called "shouters") regardless of how it's fit to and shot in an otherwise well built rifle shot by a good marksman.
Bart B. said:Terry said:No barrel eliminates wind drift. As a friend of mine says "you can't change Physics".
versus...
If physics cannot be changed, how can a barrel be more wind tolerant?The Hummer is simply a really great barrel, it may be more wind and load tolerant, but is not impervious to Physics.
If what I mentioned about winds near and far as well as different heights above the line of sight is not true, then will someone please explain why so I'll understand my errors. Then perhaps we can challenge all the software programs calculating a bullet's wind drift as well as wind turbine farm engineers calculations of wind speed above the ground.LHSmith said:Bart B. said:But in my opinion, that's caused by different cross wind speeds in different range bands. And one cannot see all the wind changes at all ranges between muzzle and target. Bullets will drift more at long ranges from a given cross wind only in the first third of the range than if only in the last third. The wind also blows at different speeds for different heights above the line of sight and how much varies with terrain; makes corrections difficult in some places.
Johara- My last post was an attempt to counter the above opinion. In effect, it becomes pretty evident that one has a great shooting barrel.
I've seen barrels shoot 30 caliber 168's and 190's in the zeros at 100 yards, if that qualifies for short range humming. And one of my own 30 calibers put 30 shots consecutive shots inside 5 inches at 1000 yards testing loads which, to me, is long range humming.johara1 said:Bart, You as a long range shooter never seen the hummer barrel work as much as short range shooter do.What a hummer does eliminate the yaw or pitch of the bullet as it exits the muzzle. The stable bullet is less affected by the conditions. So the bullet will hold it path better than one that isn't as stable exiting the muzzle. They may both shoot equal but a 1MPH. wind change may move the average inches and the hummer will shoot through the slight change. I see you have a hard time accepting this, but real and they are not affected the slight pick ups and let offs. Don't get me wrong they have to be tuned and you have to do your part but they help to a 10 or an X while with an average barrel will be an 9 or an 8. The first indicator is when you hold into a pick up and thats where the bullet goes……. jim
Bart B. said:I've seen barrels shoot 30 caliber 168's and 190's in the zeros at 100 yards, if that qualifies for short range humming. And one of my own 30 calibers put 30 shots consecutive shots inside 5 inches at 1000 yards testing loads which, to me, is long range humming.johara1 said:Bart, You as a long range shooter never seen the hummer barrel work as much as short range shooter do.What a hummer does eliminate the yaw or pitch of the bullet as it exits the muzzle. The stable bullet is less affected by the conditions. So the bullet will hold it path better than one that isn't as stable exiting the muzzle. They may both shoot equal but a 1MPH. wind change may move the average inches and the hummer will shoot through the slight change. I see you have a hard time accepting this, but real and they are not affected the slight pick ups and let offs. Don't get me wrong they have to be tuned and you have to do your part but they help to a 10 or an X while with an average barrel will be an 9 or an 8. The first indicator is when you hold into a pick up and thats where the bullet goes……. jim
I don't believe a bullet with a 1% less BC caused by microscopic yaw and pitch (which increases drag) will drift at any different speed in a given crosswind than a perfectly balanced one with zero yaw and pitch. Their shape and weight's the same and are equally effected by cross winds. But the perfectly balanced one with a tiny bit higher BC will move less sideways over a given range band because it's time of flight across it is less.
However, I'm interested in more theory of how any short range barrel can shoot through wind changes; just seems physically impossible to me.
Please explain why you think I'm wrong.butchlambert said:Bart B. said:Yes, I think a barrel maker can make a hummer. All it takes is a perfectly homonegous stainless steel barrel blank gundrilled, reamed, rifled and lapped to zero tolerances in bore, groove, land shape and twist rate with a uniform finish smoothness. It's perfect in every sense. In my opinion, that's a hummer barrel; at least to start with. They'll deform and unbalance bullets the least.
What the 'smith does chambering, crowning then fitting it to the receiver then the fitting the receiver to the stock as well as what the reloader does making ammo for it and the shooter does holding, aiming and shooting it at a target ends up being, it may well shoot in the sevens instead of the zeros.
On the other hand, the more imperfections there are in the finished barrel to start with, the harder it is to make it shoot like hummer's do regareless of how it's managed thereafter.
Last big issue of such thing's I'm well aware of is when Al Hauser(?) retired from Hart Rifle Barrels in the late 1980's or thereabouts. He made most of the "hummer" 30 caliber barrels used in NRA match rifle competition and they had a long track record of winners and records set with them. I think he made a lot of the smaller caliber ones back then, too. That's when the top ranked competitors switched to Kreiger barrels. But some other good ones came out at the same time.
By the same token, "hummer" ammunition will not shoot in the zeros in a barrel that's not also a hummer (I've heard worst of these types called "shouters") regardless of how it's fit to and shot in an otherwise well built rifle shot by a good marksman.
You're wrong, but it is a good place to start.