Working up load, 30-350 rem mag wildcat

[C96 1897]

Hey guys

I finally got some brass necked down for my wildcat project. 30-350 remington magnum

Now I just need to start load development. I seem to recall reading that I could possibly start with 30-06 load data because the case capacity is similar. But I can't find that reference anymore.

I would like to use imr 4320, with a 180gr bullet, but the hornady manual doesnt list imr 4320 for 30-06 anyways.

Can I use the load data from 350 remington magnum? Using data from a heavier bullet for a lighter one?

Thanks for any and all input on this!!

 

[bcsteve]

I'd check water weight capacity and compare it to similar capacity .30 cal cartridge see which one is the closest and go from there. .30-06?, .300 RCM?, .300 SAUM,? .300 WSM?

 

[todbartell]

If your brass holds around 73grs h2O like google suggests a 350RM does, then you'll be fine to use 30-06 data and can likely exceed a bit

 

[remington jim]

Hey guys

I finally got some brass necked down for my wildcat project. 30-350 remington magnum

Now I just need to start load development. I seem to recall reading that I could possibly start with 30-06 load data because the case capacity is similar. But I can't find that reference anymore.

I would like to use imr 4320, but the hornady manual doesnt list imr 4320 for 30-06 anyways.

Can I use the load data from 350 remington magnum? Using data from a heavier bullet for a lighter one?

Thanks for any and all input on this!!

what bullet weight are you gonna start with ? if a 180 gr with 4320 i would start at 60 grs and work up MYSELF ! jmo

 

[boxhitch]

I would like to use imr 4320, but the hornady manual doesnt list imr 4320 for 30-06 anyways.

look elsewhere.
pick a bullet weight first. Cartridge looks like a RCM

 

[dan belisle]

Hey guys

I finally got some brass necked down for my wildcat project. 30-350 remington magnum

Now I just need to start load development. I seem to recall reading that I could possibly start with 30-06 load data because the case capacity is similar. But I can't find that reference anymore.

I would like to use imr 4320, but the hornady manual doesnt list imr 4320 for 30-06 anyways.

Can I use the load data from 350 remington magnum? Using data from a heavier bullet for a lighter one?

Thanks for any and all input on this!!

I loaded for one of these a while back, basically 30-06 AI data. Start low and work up. - dan

 

[jamesharrison]

Quickload shows a default gross case capacity of 72.0 grs. of H2O for the .30-350 Rem. Mag., while their default case capacity for the .30-06 is 68.2 grs. H2O. This works out to 5.3% LESS capacity for the .30-06.

HOWEVER, only your brass, in your chamber, counts for anything! After all, it is your noggin behind the bolt!

btw, do NOT try to extrapolate data from a larger bore cartridge, even if it has a similar capacity, to a smaller bore cartridge of the same capacity. Unless you know what you are doing, that's like comparing tomatoes to peppers; they're both fruit, & both belong on pizza, but that's about it!

 

[bcsteve]

If Quickload says 72.0 gr H2O for the .30-350. Google says the .300 RCM has approximately 72.7 gr H2O.

 

[C96 1897]

what bullet weight are you gonna start with ? if a 180 gr with 4320 i would start at 60 grs and work up MYSELF ! jmo

Yes, I am hoping to use a 180 grain cast, powder coated amd gas checked bullet

 

[jamesharrison]

f Quickload says 72.0 gr H2O for the .30-350. Google says the .300 RCM has approximately 72.7 gr H2O.

QL shows 75.0 grs. as default for the .300 RCM. Case capacity in QL is defined as filled to overflowing. The programme then calculates the volume of displaced water, according to the specific bullet's C.O.A.L.

Nosler, for example, shows case capacity with the bullet seated. As a result, their case capacity for the .30-06 is 59.4 grs & 66.7 grs. for the .300 RCM. While they do not list the .30-350 Rem. Mag., the .350 Rem. Mag. shows a case capacity of 62.6 grs. [There's that 5.3% difference again, even though the methods of determining case capacity are different].