ohiohillbilly

Im looking at getting a marlin 336 and i have a question about the differenteffects of the microgroove and ballardrifling on bullet performance.

From what i understand the low spin/turn(not sure of the term) rate of the microgroove is ideal for flat nosed bullets. Then on the other handthe faster turn/spin rate produced by the ballard rifling is ideal for pointed bullets.

So my question is, which type of rifling has less of a negativeeffect on the performance of a less than ideal round?In other words,is it better to have a flat nosed bullet spinning too fast or a pointed bullet spinning too slow?

bigcountry

You don't want microgroove. my 45-70 is microgroove and doens't handle cast at higher speeds. It's really made for copper coated bullets.

You can get microgroove to shoot cast but have to slug your barrel and get little oversized bullets from places that will do that for you.