I have just bought 18 gold tip XT hunter arrows had them cut to 27 1/2 "" And bought blazer vanes And 100 gr crossfire broadheads they are weight 370 grs I am getting 301 fps out of my allegiance My question is that to lite for deer and hogs ?? I have a lot of money tied up but I am use tyo a 425 gr arrow ???

No thats gonna be plenty.

But as you also know shot placement is the key.

yea I know no matter how heavy or fast a arrow is shot placement is most inportant

I think they would be a little light for hogs, but for deer they should be ok.

My deer arrows weigh 405 grains and I shoot them @ 303 fps and my hog arrows weigh 500 grains @ 272 fps. The 500 grain arrow hits the target hard and gets deeper penetration as well.

As others have stated, shot placement is key. Although I prefer to be in the 400 grain range, that is more than plenty of weight to harvest either animal.

I had a Hoyt X-tec this last year at 70# 28in draw length with a 370gr arrow at only 272fps. With that bow I harvested 6 deer and 4 hogs with no wounds so I would think your set-up is more than enough. In fact all the hogs were taken with complete pass thrus. I'd have no worries shooting your set-up at either.