newbie question

[angrybear]

currently using 35 grain vmax+ 12 gr lilgun, (.22 hornet) and want to try some sierra 40 grain heads, question is do i use same amount of powder? same seating depth, thanks in advance pb

Get the "one book/one calibre" booklet; "The complete reloading manual for the .22 hornet"

It has all the data from both bullet & powder manufactures for the given calibre rather than a manufacturer book which only gives one opinion.

Sierra say for #1200 .224" 40gn Hornet, lil gun - 9.2gn @2700fps, 10.6gn @2800fps, coal 1.720"

Note the data given above in post #2 is for the Speer bullet (Spire SP 40gn) which is why it says SPR SP (not SIE SP which is Sierra) seems Lord Flashpants can't read manufacturer abbreviation's