Lyman 48'th, start load 60.0 max load 63.0, ww cases, wlrm primer.
Sierra 5'th, start load 61.1 max load 64.9, same case same primer.
Hornady and Nosler don't list RE22.
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Alliant does have .270 wsm data but with speer bullets. I like alliant powder, i use it with my 45-70 and so i stuck with it. I have remington brass and cci 200 primers, which is what alliant says to use. I followed their recipe for the minimum load which 61g r-22 and instead of a 140g speer i used the nosler accubond. I know you shouldn;t swap bullets, but i figuerd start low and look for pressure. Other data i found was with the nosler ballistic tip and almost identical load. I started working up and started seeing pressure signs slightly at 62g, and i did fire off one 63g which was definately too hot as the bolt was a little stiffer to open and the primer was flattened and slightly cratered into the firing pin pocket. I stopped there and pulled the rest. Just wondering if anyone else had experience with this combo.
I was looking for other 270 wsm data to compare with.Wonder if the rem cases are a lil thicker and helpedcaused the extra pressure. Time to break out the crono to double check.
I do not have a wsm, but I just checked the data in the link I posted, seems mild to me, mainly because I get 3200 fps from my 6.5 Gibbs with a 140 and 6 gr. less of RE22.
RR
reload data needed .270 wsm with r-22
