#9 is fine, as is just about anything else. However, if you are using the 1 oz loads for practice and if you plan to use 1 1/8th oz loads for competition, your timing may be off a bit as the 1 oz load will probably be a little faster. After experimenting, I've decided that I'll shoot 1 1/8th oz loads for everything. Also, some may feel that #9's are too light to use in the wind...IMHO, I don't think it matters.
Are you from Ontario? I'm in Connecticut and I've used #9 for Trap in the winter and they've bounced off/dusted the birds. Also alot more chips. Frozen Clay birds are harder I think in the winter. I usually switch go to 7.5's.
Wouldn't be my first choice, and I don't think I'd use it in the winter or at a club I knew was throwing bios, but the 1 1/8 oz of #9 factory loads that I've used in the summer have broken targets just fine. I don't doubt 1 oz or 7/8 oz of #9 would work too.
For those who shoot relatively quickly (i.e., the range is relatively short)
9s will undoubted work ok. For those who are a little slower to acquire and shoot the target and thus have a longer shot, 9s may not work well as they lose energy much faster than 7.5s or 8s and thus may, in some cases, not be able to break the target. This would especially be true in cold weather when the targets are harder to break. There is a reason that the top dogs use 7.5s pretty much across the board-that being, I think, that they just more reliably
break targets overall in any given situation. IMO.
A few years ago I watched a guy shoot #9 skeet loads from the 27 yard line down at Casa Grande. He only dropped a few. Perhaps the fact that he was shooting a purple Lujtic had some thing to do with it. Target temp anout 82 degrees.
7/8oz of #9 shot in a CB4100 wad pushed by 16.5gr Nitro100 absolutely powders 'em back to the 24. There are well over 500 pellets in this load, and if you do your part you will be very impressed with the results. I would MUCH rather shoot 3 or 4 hundred of these a day than any 1 1/8oz load. JMHO
I'm comfortable with 9's from the 16.. but for me, going to the 20 yard line with 'em don't give me the warm, fuzzies. 7.5's winter, and 7.5 or 8's spring/summer.
Get's durrrrnnnnn cold in my home town.
I have a couple of bags of 9's weighing down my reloading bench! Best use I've found for 'em yet.
Do you really know any more now than when you started. It is going to depend on you, your gun and how and where you shoot and the time of the year. I wouldn't use them for other than 1st shot of doubles or skeet if you have the proper attire.
And some of you wonder why better shooters "take advantage of you". You handicap yourself right out of the box.