Home Forums Reloading Big Game Rifles Consistent Ogive Length in Partitions?

Ok.

Good luck,Rev.

Besides, in this day and age I think we expect more. Maybe that's unreasonable and we've just been spoiled, but I think our expectations have changed as well.

Thanks. We'll see what happens. It's not like it's the only one I have.

A 1.5" group will suffice for a lot of big game hunting. For varmints,not so much.

I'll trade you,your 7x57 load developing for my .460 Wby load developing.

We'd be settling for a 12 inch "group"!

Rev,put enough lead in the air you're bound to hit something.

Rev - for starters, are the measurements above for cartridges seated to touch the lands?
If you're measuring the bullet ogive at the same place it contacts the lands (especially among similar bullet nose profiles), then of course the loaded cartridge base to ogive length will be similar for all of them, because they're all matched to the same fixed distance (the rifle's chamber). Finding one that varied a lot from the others would be cause to investigate why.

If you're loading them to the same OAL and then finding similar base to ogive (BTO) measurements, that's a different thing that would indicate the bullet noses are similar length and profile. To check, measure the tip to ogive (TTO) distance for each of those three bullets; that's what affects distance to the lands compared to OAL between different bullets. If those three bullets have similar TTO measurements, it means by some coincidence that family of bullets probably uses similar or even identical nose profiles.

Good post.

Much appreciated.

Thanks



From base to touching the lands, shouldn't they all be the same length regardless of bullet weight and design?

RM

I would work up loads with the Sierras to establish base line accuracy. Hate to admit agreeing with stick but you could drive yourself nuts trying to get the best accuracy from partitions. I do like the bullets but quit anytime I am close to or under and inch. Far cheaper and easier to get accuracy with the Sierras. Also a faster powder has turned things around for me with Partitions, I think JB recommended this or even the Nosler staff. Like most 100 year old cartridges the chamber dimensions vary greatly. Even with the similar ogive profile it will likely have wildly different seating depths for the different rifles. Good Luck.

BWA guys may help here. Ask for HOOK here. He might be able to help you. Be Well. Rusty

Excuse my ignorance but explain BWA.

That is the plan. I have several different powders to try, beginning with the old standby, 4350. Once I get a baseline - if I get a baseline - I'll go to work with some different powders and bullets and try to put together some hunting loads.