If you mean 45 yds muzzle to target a Super Handicap 7 1/2's will work. If you mean 45 yds behind the trap house here's one that's good 75 yds behind the traphouse; Estate hull (Top Gun, etc.), Cheddite 209 or WW209, 26 gr. Longshot, 1 3/8 oz. of 4's buffered (the buffer is a must to make it work).
bob31, I use the plastic used for centrifugal molding, it is almost like dust. It is not mixed with the shot. After the shot is loaded, it goes on top and vibrated down. Caution, caution, caution, the pressure goes up in a hurry............GOOD LUCK
If you're look for a 1 1/8oz load.. Remington hull.. Winchester primer.. DR Versalite wad.. 24.5 grains of Unique Hard #6's if you can.. if not 7.5's..As good or better than anything I've ever shot.. and soft shooter..
Mike (PBB) has it about right. Unique, DR Versalite, Rem hull, good primer, good hard shot. I haven't found much else that can beat it. It also doesn't beat your shoulder or your gun that much. There are a few combinations of that load that would have to be some of the best 1 1/8 oz loads I've ever used. I use the Winchester W209 or CCI209M primers. The CCI209M seems to do rather well in colder weather, although the Wincheter is no slouch either. Check your loading data and go for 1250 to 1310 fps as you prefer. Herco is a viable alternative, as are a host of other powders, but Unique is my "go-to". For heavier shot payloads, it would depend on what hull you plan on using. I like some of the larger tubes like the Federal Gold Medals. Wads and powder depend on the payload and speed.
I've found Herco really comes to life with 1 1/4oz.. but I don't shoot that much lead for any sport.. If I can't crush it with 1 1/8 and .045 choke.. I always have the Bernardelli with .052.. Either I'll hit it.. or I'll miss it.. BUT either way.. I leave no doubt.. For me.. and I speak personally.. I'll take speed and hard shot with less recoil over 1/8oz more..and more recoil and slower lead..
I'm more than sure 1.5oz of hard lead would be more effective.. but with 3 bad disc in my neck.. I just can't go there..and I can't hit crap with slow shells.. My long range shooting starts to look good at 1250 fps.. and maxes out at about 1320.. Any faster.. the pattern seems to fall apart..at longer ranges and it beats me to death.. I loaded some great 1260's with 1 1/8oz of Longshot.. but the factory told me NOT to do it.. They know better than I.. and I listen well..
You don't need anything bigger than #7.5 launched at 1250 fps to break a clay at any range you can hit it. Put 2-3 #7.5 pellets on it at 100 yds....it will break. Digweed has demonstrated that numerous times. 70-yd breaks are not at all uncommon; doing it 3 times in a row is a bit less common. There's a lot of empty space in a perfectly pointed 70-yd pattern.
I'll second the Unique 1 & 1/8 load at 1310fps but I like the federal paper hull!! Those plastic gold medals are junk,I had one blow apart and all I had left was the brass base.Fortunatly the plastic cleared the barrel.Others had it happen to them.The paper hull shoots softer.PJ
I tend to be a bit skeptical of "speed" at long range. At long range, differences between the times of flight of "fast" and "slow" loads tend to be pretty negligible and "speed" and dense patterns often do not go hand-in hand.
FWIW, Don Zuts's old load of a Remington 209P primer, a Remington RTL case, 19.0 to 19.5 grains of Green Dot, a Remington FIG-8 wad, and 1 1/8 ounces of hard 7 1/2 shot has been known to be very effective at long range because of the dense patterns that the load can throw through full chokes. This is a "cool" load, however, and it may need to be "hotted up" just a bit with either hotter primers and/or slightly higher powder charges for cold weather shooting.