I have a 350 Remington Magnum and two boxes of 185 grain Beartooth GC bullets. I am needing load recommendations for these bullets. I'm mainly interested in the 1,600 to 2,000 fps range but any loads you may have would be great!
I use 45 grains of 3031 for a reduced laod with 180 grain sillhouette bullets for Arctic Hare all the way up to 60 grains of the same powder over Hornady single shot pistol bullets for seals. Never used or heard of the bullets you mentioned but this is a start for you.
I do not have data for the BTB 185s, but RCBS data for their 180 cast bullet may get you started.
Unique 16 to 18grs = 1647 to 1849fps
4198 32 to 34grs = 1974 to 2074
Good luck. The .350 is very good at mimicing any of the smaller .35s. Lyman and RCBS have good manuals for cast bullets. The "One Book / One Caliber" series of manuals from Loadbooks USA is my first choice, because they make comparing data so easy.
A couple tried and true recipes here for you to try.
BTB 35-185gFNGC/24.0g 2400/WLRP/Rem Brass
BTB 35-185gFNGC/15.0g Red Dot/WLRP/Rem Brass
My vote goes to the 2400 load, although it burns a little dirty, it's an excellent load that will put you close to the 2000 fps threshold you want to acheive. and do so with a minimum of fuss and loading development.
Let us know how you make out working up loads. That 185g FNGC (WFN profile) is a really good match for the short neck on that case, you should get some very gratifying results.
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