Arrow building advice

[Krex1010]

I'm going to order some new arrows and I'm trying to figure out which way to go as far as where to add grains and how many grains I really need. I shoot a bear montana, 45#, and I draw 28"

I'm looking at 600 spine carbon arrows at 7ish gpi depending on brand. I do hunt, and I plan on using these arrows for deer next year hopefully. I see than the general rule in 10 grains per pound, which brings me to a 450 grain arrow. I'm not sure if Should add weight tubes, a slightly heavier insert and a 125-150 grain head? Or should I skip the tube and go with all the weight up front with inserts and heavy heads? Also unsure about fletching, helical or offset, I know it probably doesn't matter with field points but I do hope to use broadheads on these arrows so is helical significantly easier to tune with 2 blade  Broadheads?  Any advice is much appreciated

[Bladepeek]

If you're willing to accept a 30" length, I think a 500 spine arrow with standard insert and about 175 gr point will put you very close. You could then trim it back a bit if necessary, or go with a heavier insert and slightly lighter point as needed.

a 600 spine will have to be cut shorter, and 145 gr points would probably work, but you will be a bit below your desired 10gpp.

Lots of possibilities, but my 43 - 47# bows drawn 28" seem to work well with GT3555s.

[LostNation_Larry]

I second the 500 recommendation.  I have experimented quite a bit with 75 and 100 grain inserts and I like them.  My choice is heavy inserts and more typical point weight.  If I had no idea what I wanted I would put in some aluminum inserts and buy screw in points of 125, 145, 175, 200, and 250 grain.  At $4 per dozen you are only out $20 for all those points and you can try them without gluing in an insert.  I guess 300's are also out there but I haven't played with them.  Once you see how much weight you want up front you can decide how much of it will be insert and how much will be point.