100 grain partition

[laker]

COuld someone please give me some reloading data using the 100 grain .25 cal. Partition using IMR-4350 and IMR-7828 for a 257 weatherby mag. What was the accuracy with that load and the velocity?
Thank you

 

[340boy]

The nosler reloading guide, 5th edition, pg 174 shows a starting load of 60.0 grains of IMR4350 with a velocity of 3294fps.
I dont see any data given for -7828 with the 100 grain, but does show 7828 used with the 115 grain Partition

 

[remingtonman_25_06]

If theres data for 7828 and 115g, then start with that data. It takes more grains of powder with a lesser weight of bullet. You'll be fine if you start with 115g data. You should be able to get at least 3500-3600fps.

 

[FOTIS]

www.reloadersnest.com :wink: