gun_slinger_boy
.338 Win Mag
I know there are a few on the forum that are just starting out reloading so I wanted to point out the importance of having multiple sources for load data. I have a 9th edition Hornady hard cover and also using Hodgdon reloading site. I have a 130gr boolit I'd like to try out for the 300 BLK. The load data testing parameters are as follows
Hodgdon
barrel = 16" with 1:8 twist
primer = Remington 7 1/2, Small Rifle Magnum
case trim length = 1.363
Hornady
barrel = 16" with 1:7.5 twist
primer = Winchester small rifle (this is a magnum primer by default)
case trim length = 1.358
All things being equal except the .5 inch twist difference and the .0005 trim length difference which realistically won't make any difference at all this is what they list.
Hornady uses a range for bullet weights 125-130gr. Then for H110 they have a starting weight of 14.6gr working up by 1 grain increments to a max of 18.8.
Hodgdon has separate weights of 125 and 130.
125gr simply has a starting weight of 15.7 and max of 18.5
130gr has starting weight of 17.1 and max of 18.6
The problem here is Hodgdon's starting weight for the 130gr bullet is nearly the max charge Hornady has for 125-130gr bullets. Granted they're not using the same exact bullets but they are of equal weights and are all jacketed. This by the way you have to account for many of the times since the exact boolit you're using may not be listed. So anyway, this one is a no brainer. You would be better to start with the Hornady load data and work up from there. Hope this can help someone out in the future.
Hodgdon
barrel = 16" with 1:8 twist
primer = Remington 7 1/2, Small Rifle Magnum
case trim length = 1.363
Hornady
barrel = 16" with 1:7.5 twist
primer = Winchester small rifle (this is a magnum primer by default)
case trim length = 1.358
All things being equal except the .5 inch twist difference and the .0005 trim length difference which realistically won't make any difference at all this is what they list.
Hornady uses a range for bullet weights 125-130gr. Then for H110 they have a starting weight of 14.6gr working up by 1 grain increments to a max of 18.8.
Hodgdon has separate weights of 125 and 130.
125gr simply has a starting weight of 15.7 and max of 18.5
130gr has starting weight of 17.1 and max of 18.6
The problem here is Hodgdon's starting weight for the 130gr bullet is nearly the max charge Hornady has for 125-130gr bullets. Granted they're not using the same exact bullets but they are of equal weights and are all jacketed. This by the way you have to account for many of the times since the exact boolit you're using may not be listed. So anyway, this one is a no brainer. You would be better to start with the Hornady load data and work up from there. Hope this can help someone out in the future.