I did the testing of my Allegiance at exactly 315 grains and 63 lbs. My bow is a 27 1/2" model but the measured DL was at 27 3/4" and I have a tru-peep, loop, but no cable or string silencers. I got 296.4, 295.7, 295.4, 295.3, 295.3, 295.8, 295.1, 295.1 for an average of 295 fps.

At the same 63 lbs. I shot a 350 grain arrow at 281 which gives 1 fps for each 2.5 grains of arrow weight.

Going to 70 lbs., 350 grains equals 297 fps which gives 1 fps for each 2.3 lbs. of draw weight. By-the-way, my BC said 299 and I measured 297 with a peep and loop but no silencers, pretty darn close.

Using my numbers I would estimate muzzy's speed at 275.5 fps with his 376 grain arrow. Buckeye's general guidelines for speed above were very close, I was just confirming with actual measured numbers.

muzzy, my numbers put your measured speed of 274 really close to where you should be. If the 272 is more consistent then I would guess you are either not at quite 63 lbs. or the chrono is not calibrated. It sounds like you are not sure about the scale becuase you said you knew it was off and you gave the limbs a turn, a full turn of the limb bolts gives a full 4 pounds of DW adjustment! I would find an accurate scale to start. I know mine is accurate because I calibrated it with a known weight.

Pat, my testing indicates the Allegiance is still very efficient when backing out the limb bolts! Staying at 5.0 grains per lb. I only lose 2 fps going from 70 lbs. to 63 lbs. This is much less than other bows I have tested and is another impressive thing about the binary cams!