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   Hi Declan,
Assuming you're using the Artillery Hold on a rest, using Follow Thro', etc.. and assuming you've determined that that pellet is the best for your barrel (?), then I'd say a variable wind of that strength at 55yds is the main culprit because:
That pellet is light (7.8gr)
A new FWB .177 rifle has an MV of about 850fps
How does the FWB perform on a windless day at that range usually?

For comparison, my Weihrauch HW95 .177 breakbarrel - using 8.4gr AA Diabolo Field at 920fps - would only just improve on your group with that sort of wind at 55yds. On a still day, a 5-shot group would usually be within 20-23 mm at 55yds.

Hope that makes sense?

Have you tried different Head sizes too? I believe your pellet is mainly 4.50mm? You might like to review the following article?:
http://hardairmagazine.com/reviews/jsb-exact-express-diabolo-7-87-grain-177-pellet-test-review/

Let us know how you get along with your trials - thanks. 
Maybe a slightly heavier pellet would perform better?

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Myson Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Mar 2016 Location: Feilding Status: Offline Posts: 162	Post Options Post Reply Quote Myson Report Post Thanks(0) Quote Reply Posted: 15 Apr 2024 at 7:00am
	Hi Declan, Assuming you're using the Artillery Hold on a rest, using Follow Thro', etc.. and assuming you've determined that that pellet is the best for your barrel (?), then I'd say a variable wind of that strength at 55yds is the main culprit because: That pellet is light (7.8gr) A new FWB .177 rifle has an MV of about 850fps How does the FWB perform on a windless day at that range usually? For comparison, my Weihrauch HW95 .177 breakbarrel - using 8.4gr AA Diabolo Field at 920fps - would only just improve on your group with that sort of wind at 55yds. On a still day, a 5-shot group would usually be within 20-23 mm at 55yds. Hope that makes sense? Have you tried different Head sizes too? I believe your pellet is mainly 4.50mm? You might like to review the following article?: http://hardairmagazine.com/reviews/jsb-exact-express-diabolo-7-87-grain-177-pellet-test-review/ Let us know how you get along with your trials - thanks. Maybe a slightly heavier pellet would perform better?
	https://www.youtube.com/watch?v=eq7jVyBfFqE Air Arms S510 US .22 Air Arms S410 .22 Weihrauch HW97KT .177 Weihrauch HW95 .177

Declan Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 25 Nov 2020 Location: North Island Status: Offline Posts: 86	Post Options Post Reply Quote Declan Report Post Thanks(0) Quote Reply Posted: 14 Apr 2024 at 6:53pm
	The pellets are unsorted straight out of the can. Good tip. Thanks.

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 1703	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 14 Apr 2024 at 6:45pm
	Looking at that spread first thing i would looking at is pellets. (assuming you have your hold sorted and rifle us accurate.) Thats the sort of spread that is, looks like Flyers and not pulled shots. How accurate is it at 20-30m?

Declan Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 25 Nov 2020 Location: North Island Status: Offline Posts: 86	Post Options Post Reply Quote Declan Report Post Thanks(0) Quote Reply Posted: 14 Apr 2024 at 5:25pm
	I hear about people shooting pellet on pellet over some longish distances. And shooting a pcp I believe marksmen can achieve that sort of accuracy. Me? Well there’s no way I can achieve that degree of accuracy shooting a springer. Today I shot over 50m in a 10kmh left to right variable breeze. I used my FWB Sport using .177 JSB Express pellets with a 3” target. I’ve attached a couple of photos of my day’s end 7 shot group. For me that’s about as good as I can achieve outdoors over that sort of distance. But I’m sure others could do a lot better. Cheers. Declan