@giles
I have a Ravin R10 that shoots a 400 gr. bolt with a 100 gr. broadhead at 400 fps. It's a "hot rod" and I understand that. However, it seems to me that the crossbow itself would last longer, be quieter shooting and have more penetration if I could build a "heavy arrow" setup, like I have for my compound bow.
So, I called Ravin and spoke with one of their technicians about it. I described what I had accomplished with my heavy arrow build for my Elite Ritual 30 compound, so he would understand that I have some knowledge of what I've done and accomplished with it. I asked if it was possible to use Ravin products to attain the same end result.
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He said it certainly is doable with the 500 series of bolts they offer. Again, I asked would it hurt anything if I added weight tubes to the inside of the bolt and a heavier brass insert. He said he didn't see a problem with that as far as warranty work....meaning it won't void the warranty. He said, "You're going to lose a lot of speed and you'll have to adjust the FPS speed dial on the scope so it will compensate for the trajectory." I told him that I expect that and totally understand how all that works.
We talked for quite a while, but he wasn't hesitant at all about the adjustments and/or alterations I was considering....as long as I stayed with the proprietary Ravin parts/equipment. He said the same thing could be said for any other brand of crossbow.
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Which only makes sense.