A 30-30 is a 30-30 no matter WHAT the action type, although you might need to slightly modify or adjust to fit each individual rifle. 30-30 trim lenght is 2.030"...I trim to whatever length the shortest case is...usually 2.015" plus or minus 0.005" is about right...most chamber necks are longer than the longest possible case length so it isn't something to loose sleep over...just trim them to a uniform length and be happy.
I've loaded 30-30's for a Sav 340 and a couple of milsurp conversions(I have NO idea WHY they were converted,
but the owners were happy) used reloading manuals recommended trim length, measured to where several spire pointed bullet brands hit the throat and seated each bullet brand to either fit the magazine or where the best accuracy was obtained.
Only trouble with feeding was with the magazine...the mag lips can get messed through handling and dings.
I load pointy bullets in my Marlin and Win leverguns also...only loaded 2 in the mag and one in the chamber. Never had any problems with plastic tipped pointed bullets, but the lead tipped ones would have the lead tip mashed quickly but that didn't bother hunting accuracy a bit.
I've never had any problems with shorter than manual trim lengths...just less case to hold the bullet so I polished the sizer button down a bit or use a smaller sizer bushing.
As long as you keep the trim length uniform not adverse affect on hunting accuracy either...but you don't want to get TOO short as if you keep shooting cases with excessively short neck you will erode the neck area and cause problems if you go back to full lengh necks...a few won't hurt just to satisfy your curiosity.
Luck
