Highland Lofts
Member
- Joined
- May 1, 2019
- Messages
- 3,037
I see this in between Lee Manual and the Hornady Manual alot.
One that sticks out is between 44spl and 44mag. Where the 44spl with one grain less powder had more velocity then the 44mag. Probable due to different lenght of barrels used in ghe test fireing.
Some of lee's data starts over Lornady's max load.
There are different test proceedures and different firearms used and then they find new ways to get results and then the new data is different from test done years ago.
When I load and see a big discrepincy in velocity between two manuals I look at two other manuals or get on their website and see where the average is and go with that.
I never load up to the max charge, for me most of the accurate loads are about mid-way or lower. But I don't shoot long range which changes the dynamics of things.
I bought a chrony a couple of weeks ago so now I can see where my loads are compared to published data.
Plus I will be able to compare velocity's between a 357mag with a 2" barrel.and a 357mag with a 7 1/2" barrel shooting the same primer, powder and bullet.
When loading I like to use the data from the bullet manufacturer. Differen bullet manufacturers use different grades of material hardness and a little different design which changes things.
Take is slow, check published data and be safe. If things go bad it could be deadly for you or a bystander.
I have seen guns that blew apart from squibs then another shot was taken and injuries accured.
When loading focus on loading. If you get distracted ,stop loading and go back to it when you can give it 100% of your attention.
One that sticks out is between 44spl and 44mag. Where the 44spl with one grain less powder had more velocity then the 44mag. Probable due to different lenght of barrels used in ghe test fireing.
Some of lee's data starts over Lornady's max load.
There are different test proceedures and different firearms used and then they find new ways to get results and then the new data is different from test done years ago.
When I load and see a big discrepincy in velocity between two manuals I look at two other manuals or get on their website and see where the average is and go with that.
I never load up to the max charge, for me most of the accurate loads are about mid-way or lower. But I don't shoot long range which changes the dynamics of things.
I bought a chrony a couple of weeks ago so now I can see where my loads are compared to published data.
Plus I will be able to compare velocity's between a 357mag with a 2" barrel.and a 357mag with a 7 1/2" barrel shooting the same primer, powder and bullet.
When loading I like to use the data from the bullet manufacturer. Differen bullet manufacturers use different grades of material hardness and a little different design which changes things.
Take is slow, check published data and be safe. If things go bad it could be deadly for you or a bystander.
I have seen guns that blew apart from squibs then another shot was taken and injuries accured.
When loading focus on loading. If you get distracted ,stop loading and go back to it when you can give it 100% of your attention.
