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.177 fac


kody
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I have not used one but everything I have concluded tells me it is of little benefit having .177 fac over .22 fac.

.177 has a lower shot count compared to .22 in all pcps', less accuracy due to velocity increase,and over penetration being three reasons.

Most beneficial to have .22 in fac up to 30-32 ft/lbs, giving much flatter .22 trajectory (not too dissimilar to .177 at 20ft/lbs) good accuracy and more hitting power than .177.

Plus .22 is well known to be a mans calibre of course.

But what do I know.

I feel sure others may differ in their oviews as is often the case when discussing opinions and experiences.

Edited by Good shot?
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I had a fac rapid in .177 running at between 20-25 ft ibs and to be honest it wasn't a patch on a .20 ( 27 ft ibs) or .22 (30 ft ibs) it did shoot very flat but didn't seem to kill as well as the larger calibers . Years back I had a hw80 shooting h&n silhouettes at 14ft ibs and for me that worked well , I personally wouldn't get a fac .177 there's better options

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I had a fac rapid in .177 running at between 20-25 ft ibs and to be honest it wasn't a patch on a .20 ( 27 ft ibs) or .22 (30 ft ibs) it did shoot very flat but didn't seem to kill as well as the larger calibers . Years back I had a hw80 shooting h&n silhouettes at 14ft ibs and for me that worked well , I personally wouldn't get a fac .177 there's better options

 

I think my earlier post could be misinterpreted, Theoben preferred 20 Cal over 22 cal at FAC power levels, but the issue with 20s at the time was getting quality pellets.

 

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A lower powered fac 177 was useful in springers because it went flatter further but with pcp easy doubling spring fac while remaining pleasant and easy you shoot it no longer has a place. Once you go near full speed in a 177 your dealing with the transonic zone and this in itself creates issues

Infact heavier 22 pellets or even 25 are a better route to travel

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I think my earlier post could be misinterpreted, Theoben preferred 20 Cal over 22 cal at FAC power levels, but the issue with 20s at the time was getting quality pellets.

 

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it was Ben Taylor's enthusiasm for the .20 that made me buy one 20+ years ago , I still have the same rifle albeit regulated now and on its third barrel. It was Hobson's choice with pellets in that only premiers shot well at 900 fps + but they are still my pellet of choice
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I think Kent is right in saying that 177 you have the problem of going trans sonic ,my rapid was unregulated and had quite a power curve . if I ran it to hot it would shoot good groups at the beginning and end of the charge but often times mid charge shoot all over the place.

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Was thinking of head shots only on rabbits

i think for head shooting you would be fine , I got on well with a 177 fac for that it was body shots on pigeons/crows that I struggled compared to .20/.22 I even tried dai sung 15 grain and they were no better . I tried one and it wasn't for me but if you just shooting rabbits give it a go
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Besides the shot count have you considered the potential of over penetration?

Maybe?

 

What is the problem with over penetration if the pellet goes in the right place?

 

If it goes clean through the brain or heat/lungs, then bunny/squirrel/pigeon/etc. is dead regardless.

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I shot a rabbit tonight with my HMR. The shot was low on its head and never killed it outright, I had to go and finish the job off. With an airgun this scenario is far more likely so you want a pellet with as much punch, and so room for error as possible, and that ain't 177.

Not good, id have thought the hmr would have killed it via impact regardless where on the lower head? They do make a mess as I've found out.:lol: Personally if fac id go 30ftlbs .22 :)

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The higher power you go with air the bigger and heavier the pellet ends up. In the end you end up ditching the skirted pellet altogether

 

177 will always rein supreme at ft and the like as it has five yards trajectory gain over a 22. This is at 12 ft lb! 55 yard 40 mm targets are more a formality with a 30 ft lb plus 22

 

After that point fac air becomes an enthusiasts toy the 22 lr and other rimfire rifles take over

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What is the problem with over penetration if the pellet goes in the right place?

 

If it goes clean through the brain or heat/lungs, then bunny/squirrel/pigeon/etc. is dead regardless.

Don't intend to expand on this but not so in my experience.

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