same weight, same material bullet data?

[tackdriver]

If I find load data for say a 225 gr BAR XPB, would that be the same data for a 225g Hornady XTP? If not, any idea why there'd be a difference?? Drives me nuts trying to find specific data for a specific bullet
thx

[dominic]

No. Just looking at the data, the XPB has 655 ft lbs and is 1146 fps, while the XTP seems to run around 1410 fps and is around 993 ft lbs. Big difference.

[tackdriver]

So is that with the same powder/gram load for the two different results?
Is there a GREAT reloading manual out there that covers everything? My Lee book just only goes so far..

thx Dom.

[J-cat]

XPB is a longer bullet cuz it's all copper.

XTP is a shorter bullet cuz it's a conventional design.

The longer bullet takes up more room in the case. It requires a different load.

[J-cat]

XPB is a longer bullet cuz it's all copper.

XTP is a shorter bullet cuz it's a conventional design.

The longer bullet takes up more room in the case. It requires a different load.

['ol shooter]

A few other factors come into play, as has already been said, how deep it is seated into the case, depending on where the ogive is located relative to bullet length, and ballistic co-efficient is going to plat into how it flies.

[Audredger]

bearing surface has a lot to do with it too

[tackdriver]

Well hell. Here I thought it was just a conspiracy to force you to buy a whole bunch of reloading manuals to get the needed info.. Thx guys.!

[Divernhunter]

No Barnes data must be used with their bullets.
Besides longer, thus more bearing surface, they often must be seated deeper.
One important fact is that a lead core bullet will compress some and a Barnes type will not conpress in the bore.
The jacket material on most bullets is a copper alloy where the barnes bullet (and swift bullets) are a just copper.

[ar15barrels]

Well hell. Here I thought it was just a conspiracy to force you to buy a whole bunch of reloading manuals to get the needed info.. Thx guys.!

There is no conspiracy.
You actually DO need to own a variety of manuals if you want to have better coverage for a wider selection of components.