Anyone tried the rimrock 260 gr “Keith” style in 44 magnum

[CWH44300]

Looking for experience and opinions on the 260 gr flat base, Keith style from Rimrock. I’ve been shooting the rcbs250k for a long time and need to lay in a supply. The rcbs bullet has worked well for me in both mid range and full bore loads and remains stable and accurate at longer ranges. I used to get them 3k at time from leadheads.
Sorry but no desire to cast my own

Thanks

 

[BLUEDOT37]

I bought some from them to try using their "bullets by the pound" option but haven't loaded/shot them yet.
I believe I ordered the .431" sizing option.

Here are the specs/dimensions of the sample I received:

Rim Rock 260gr L-SWC-FB, BHN 15
---------------------------------------
Wt: 261.6gr
BOAL: .781"
Seating depth to crimp groove: .390"
Metplat dia: .344"
Dia: .4314" @ base, .4306" @ shoulder

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[CWH44300]

Up for another look
Thx