Jerry, to heck with what bullet you're using. What I want to know is what rifle you're using and who built it. If it'll shoots that good with an SST it ought to shoot in the ones or zeros with custom bullets such as BIB, Chism, Fowler, etc.
In a rack full of .30 rifles I've loaded for, I've never had a Hornady or Nosler bullet shoot as well as a Sierra, Berger, or Lapua. That's just been MY results. An example is the last rifle I did load development for. A customer had a box stock Winchester SS 300 RUM. In short order it proved to be a POS in its unbedded factory stock with Remington Green Box ammo.
Now, the customer wanted to shoot a 165 weight bullet so that's what he paid me to figure out. The stock was pillar and glass bedded and allen head action screws installed so we could use an inch pound wrench.
Prior to this work the rifle's accuracy level made it better suited as a club than an effective shooten' iron. We were looking at 3 shoots anywhere in a one foot square area at 100 yards.
For load development I started with several match bullets seated past magazine length to nearly touch the lands. Out of the gate Lapua 167s printed a .564" 3-shot group. Several other combinations later, 165 SSTs printed a 2.25".
On another day 168 SMKs showed a .592" while a 165 Hornady BTSP printed 2.75" and 165 Nosler Ballistic tips a 1.25". But the short of it is that the customer wanted a 165 weight load that is predictable with a magazine length COL.
I decided to try 165 Sierra HP Game Kings. Seated magazine length they shoot around .75" on most outings. The Nosler would be a second choice, but I never could get them to shoot less than one inch.
We all know that rifles are individuals and have their likes and dislikes. You have to go with what works.
The Gibbs is a parts special. The action came from a used Parker Hale Midland with a busted stock, the barrel - a shot out 308 match barrel with serious throat erosion ( I wish I knew who made this barrel), spare gunstock at a gunshow.
Bevon King in northern BC did the rechambering to Gibbs. Tom Norman in Abbotsford did the initial install and 308match rechamber (shot very well too, just wanted more poop for LR hunting). No action work done.
Goes to show that a good barrel, installed properly does more for accuracy then all the action tweaking, etc. out there. The lock up of the bolt is tight but wobbles like
The limiting factor in this rifle is not the bullets but the stock. Using a hunting style stock with a rounded forend, the groups are 25 to 50% bigger then the flat bottom BR style stock I also have for this action. All properly bedded of course.
This rifle has already shot in the .1's with the SST at 100yds.
So far, my experience with Hornady bullets is the opposite of yours. Most every rifle I use them in shoot better. Go figure. The Hornady bullets do have a much different profile and I feel they shoot best when the ogive is close to the lands. This is not always possible with certain throats/magazine combos.
These "long" throats would favor the Sierra, etc. that have the ogive closer to the point. Could explain why you are also having issues the the Ballistic Tip, another match accurate bullet. The bullets need to be fully engraved by the rifling before leaving the neck of the case.
Did I mention that I just shot a 3 rd group at 680yds, in no wind, that measured 2 3/8" widest spread. Second group, light gusty wind, had two inside 2" with the third 8" away (oops). Going to do lots more shooting with this rig to learn how to read the wind. Brass is LC69 military stuff, offset flash holes and all.
Stock shape and wind will do more to screw up an accurate rifle then all the brass prep put together. Of course, ammo must use good bullets and be assembled straight.
Just a little note FYI, the Interbonds do not have a cannelure. Nor do the Accubonds. Not sure if other calibers will but the .30's that I am shooting do not.
Although your rig has done good, still takes a hell of a shooter to break 1/2" consistently. Good shooting.
I find that my skills take a bunch of polishing each spring, more insentive to shoot a lot to get back to were the rifles and loads are capable of performing.
ian, What does the interbonds have for an ogive? Secant like the rest of Hornady? I notice what Jerry said about Hornady and Sierra that the Hornady because of their ogive type like to be seated close to the lands, in my 6mm Rem. 75gr. Sierra HP have shot as small as .217" for 5 shots, 100yds, being .040" off the lands, for the 75 Hornady I shot a best .322" at .005" off.Go figure. [img]images/icons/grin.gif[/img] Jay
I have to be honest and tell you that I do not have a clue what kind of ogive the Hornadys have. But I would be surprised if they are anything other than what they have advertised for so long - secant ogive.
The ogive is fairly pronouned where it starts, almost a ring like all my other Hornady bullets so I would suggest it is a secant ogive. Held an interbond beside an accubond and the Nosler is much smoother, less definite where it starts to taper to the nose.
I wouldn't know a secant ogive if one walked up and kicked me in the butt, but assume that the almost shoulder-like contour is a secant ogive. I should probably read my Hornady manual and it will no doubt tell me this stuff, but I would forget it about as fast as the last time I looked it up. I would rather shoot the suckers than look at their shape. [img]images/icons/smile.gif[/img]