Felt recoil is a combination of several things:
how the stock fits the shoulder - shortening them usually changes the resulting recoil direction into the shoulder and the placement on the surface of the shoulder
the reduced barrel changes the muzzle blast because of the final burn when the un-ignited powder is exposed to the air after leaving the barrel.. in hot charges this is much more noticeable then lower powder charges
but the most effecting reason is the overall weight vs the overall force.. there is a good reason older service weapons weighed a lot more then a comparable caliber hunting rifle. hunting rifles are not intended for repetative high volume shooting in short amounts of time
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