I recently got a few new longbows, a tomahawk 60lber@28", a shrew samari 57#@27" and a Turkey creek double carbon 68@30" This all equates to roughly 60#@28" which is my draw length (Might be getting closer to 28.25)
I am wondering if a 400 spine arrow like GT 5575 or heritage 250 would be a good arrow for me, I understand that each bow might be picky, but I am hoping to use the same arrows for all three bows, hopefully in the 28-29" arrow length region. I am hoping to shoot a 175 grain head with the standard inserts.
I am wondering if a 28-29" arrow with the 400 spine and 175 grains up front should be fairly well in tune for this bow, currently all I have for 400 spine arrows are for my bow with wheels and they are too short at 26 3/4" to try on this bow. Don't want to order any arrows until I am fairly certain that the arrows I order will work (or be adjusted to work for me)
If you're going to be shooting broadheads, make sure you have at least an extra inch in arrow over your drawlength. You don't want to get a razor-sharp broadhead close to your finger.
If I were you, I'd look at the Arrow Dynamic Trads or Hammerheads. They are very forgiving of spine. You still may have to fiddle with head weights to get them to hit where you look with each of the bows.
I think 400 spines will be too light with a 175 grain head. Even if you went with 125 grain heads, you'd be borderline too light with 400s.
Do you have an arrow saw? Do you bare shaft test? I recomend both; I assume you are planning to buy full length and cut to suit. TRA's trest kits are another nice option for experimentation.
Keep in mind that not all 400 spine arrows are created equal. I favor the skinny carbons, and for me anyway, at 30-40 yards, the Full Metal Jackets and the Beman Classics consistently group a couple inches apart.
Building out the site window on the heavier bows may be an option.
2nd the Arrow Dynamic's suggestion. Very forgiving