Minimum and maximum pellet weight for a HW97kT .22 cal

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Take a look at the above tests. In my .22 HW97K, the H&N Baracuda 21.14 produces the best groups, the H&N FTT 14.66 is second. The targets above also show the foot lbs of energy and the velocity for each of the pellets. I have varied that at 50 yards the performance variable holds true, and I have duplicated these results several times without waiver. As the Baracuda and the FTT produce both produce acceptable groups, I have opted to stay with the FTT just to keep a flatter trajectory.

Hope this helps.
 
I have heard others say that very heavy pellets should only be shot out of PCP's, but I don't fully understand why this could cause damage to a springer (as opposed to very low velocity and poor accuracy) or what the threshold is for "too heavy." But, in the old days before PCP's were a big thing, the Beeman Kodiak/H&N Barracuda pellet was already in existence, so I always assumed they were made for high power springers and consider them to be the upper limit for pellet weight. 

The HW77/97 powerplant can comforably put out 17fpe in .22 without being overstressed (I have one that shoots shoots smooth as butter at 16.75fpe), so it can handle a pretty heavy pellet. Personally, mine is not pellet picky and shoots almost everything well, but seems to like JSB 15.89 the best (which none of my other .22 Weihrauchs like at all). I'd say your initial selection is a really good start for pellet testing.
 
here 5 shots each, into a wrapped book hanging on my wall at 18 feet, doing good up and down

but havnt got my side to side locked in yet im wiggling too much,

using the top of my desk and a caldwell front rest, and sitting at my swivel chair jacked up all the way, too loose-goosy,,

but dang im having fun, Had one flyer, saw a nice looking visitor on Fox news,,broke my concentration

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