Maybe the best way to get a good subsonic load would be to shoot PP bullets and BP.

Keep on hav'n fun!
MikeT

PS You guys give me way too many ideas for my own good.

"My primitive mind makes me think it should be, the less time to the target, the less time for the wind to move the bullet."
Bob, I wonder if this is like driving faster to get there before you run out of gas.  
There's bound to be a physicist on this forum who can answer this. If a force, the wind, acts on a moving body, the bullet, what causes the greatest effect on the body, time or velocity, or is it the same for a given bullet and wind?
Lynn

How will subsonic velocities effect OH scores?  I like light, fast bullets for OH shooting, less barrel time? Does it make a difference?

       Joe.   

My highest OH scores are with a 30 inch barrel. Cant get a short barrel on the target for long. Wiggles all over. Short barrel with a long bloop tube? 

              Joe. 

Barrel time is a factor offhand. Not sure it's a large factor though. Lot of Rimfire Silhouette shooters use short barrels with weight forward to give the balance of long and lag time of short. Does it make a difference ? who knows until you compare for yourself.

I know I was not convinced lock time made any difference until years ago HP silhouette I switched from a 03 Springfield to a Remington 700. Faster lock time made a noticeable difference. I suspect given the small differences with a Schuetzen. Say 1050 feet Sub sonic vs 1450 feet super sonic the additional barrel time is not noticeable.

If we were using 1050 feet Shuetzens compared to same rifle with a high velocity cartridge 3000 fps per second you would see a substantial difference offhand. Few times I have shot my 7mm08 Silhouette rifle on the ASSRA 200 yard target the faster barrel time and less wind drift is noticeable.   

Once I adjust  to the rifle I am shooting however I don't see any real difference in scores.  Could be the Schuetzen that weights half again more, hook plate and palm rest overcomes the faster barrel time ? probably.

While on my soapbox wind drift is not much of a factor in Schuetzen anyway. Timed shoulder to shoulder matches where your ability to wait conditions out is limited makes a substantial difference.  Schuetzen you can wait as long as you like, and put them on the sighter target if not sure. No good reason to shoot in adverse conditions.

In fact if pure score is not as important as match placing it's easier to place high in windy conditions as many other competitors give up or rush their shots. Which would bench shooters rather brag about 250's or first place ?  Offhand first trumps score every time

Meanwhile will launch my 32/40's at about 1450 looking for supersonic arrival on the 200 yard target. You guys win some offhand matches sub sonic I might change my mind.   

Boats

Frank you are right unless somebody has a base level of skill small changes are not noticeable

On 210's and 220's  Lots of guys out there than can shoot those scores, they are just not shooting Schuetzen.   Blender and Luke are still shooting offhand in CLA matches at top national level.   I am going to shoot the Pennsylvania State CLA match next month and would guess there will be at least two dozen shooters that could shoot a 2100 plus Hudson match. Few that could shoot 2200

Top group of CLA shooters out in the PNW could do very well if they competed in Schuetzen

Boats

Frank.  Good idea.