spine vs point weight

[Neutron]

I see some guys are using really heavy points.  I am shooting a 45# recurve and am trying to figure out what arrows and points to shoot.  I am used to mainly using 125gr points, I think I have some 145 grain field points too and am wondering how one goes about figuring out going up to 160 to 200+ grain points and broadheads.  Do heavy weight points help with flight?  Do very heavy broadheads penetrate better, where is the balance between weight and penetration and going too slow and loosing trajectory?  Also with a center cut riser on a factory recurve does one get to use a broader range of spines or is there really likely to be one sweet spot?  Just curious what peoples thoughts are.  Thanks.

[Ragnarok Forge]

Neutron,

heavy points increase an arrows forward of center ( foc ) balance.  The further forward your foc the better the arrow will penetrate compared to a lower foc arrow of the same weight.  

Heavy points on a properly tuned bow do help with flight. hevier head = higher foc. Short story, higher foc means your fletchings can exert more force on the arrow helping it correct sooner and fly better.  It is not the heavy point in itself that helps.  It is pushing the arrows balance point forward in the shaft.  I am shooting Beman Bowhunters with 275 grains up front out of a 55lb longbow.  FOC is 24% and they fly like bullets with 4 3-inch fletch.

Only you can decide where the balance between trajectory and weight you want is.  I prefer an arrow that is at least 11 grains per lb of draw weight.  Lots of guys think 10 gpp is plenty.  If you want good penetration, I would take your arrows up around 550 grains.  You can retrain your brain to shoot to hunting ranges with this weight arrow easily.  It would take you bumping up to 800 grain arrows or more before you started loosing penetration due to speed loss.

A center cut riser does allow you to shoot a broader range of spines.

[Neutron]

I never thought about the lighter back end making it easier for fletching to steer the arrow.  That makes a lot of sense.  I always thought of the heavier point kind of pulling the rest of the arrow along with momentum and dampening the wobble of the arrow.