Aim to the right, fool!

20100309093824(1) This video shows an attempt to hit a concrete paving block. Stats are: draw length 45″, draw weight 5000 lbs, bolt weight 6985 grains, velocity 314.8 fps, energy 1537 foot lbs.

The chronograph was checked with 3 shots from my .25 cal. Kodiak air rifle and all the readings were in the normal range for that particular piece of artillery. Today’s velocities seem well founded. All of which leads me to conclude that the 401 fps reported the other day is a highly improbable number. Grovel, grovel….retract, retract,….. sorry about that.

I have not sighted Firefly in yet. There is not much point in doing that until she has several more shots under her belt and the bundles settle down. In the meantime we can have some fun blowing up bolts on the 1/4″ steel plate. Who knows, I may get lucky and actually hit one of the paving blocks.

Here are three more videos of some admittedly wild shooting. Below them are photos of the damage done to the target. All the bolts are very close to 7000 grains. Range is 53 yards.

20100309103750(1) 312.8 fps, 1520 fpe. Note the blue striations from heat build up on the edges of the hole.

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20100309104353(1) 280.5 fps, 1223 fpe. Probably slower because the fins were oversize on this one. It looks a bit wimpy because of the way the bolt bounced out, but check out what it left behind in the 1/4″ plate. Penetration is 3″.