Single shots and wavs

First, check your Snap to Grid settings to make sure things will line up where you want them. Once you have your loop of one shots constructed, bounce them to a clip, then convert it to a Groove Clip. You can then extend it for as long as you like.
 
There probably other ways of doing it, but that's how I would go about it.

hi lads.  Using the SD method that Johhny V suggests seems to be working better for me. 
Bouncing to clips and then creating groove clips seems to have a snag for me.  When i select a couple of clips and then choose "bounce to clips" it all seem to be working.  But then when i select convert to Groove an odd thing happens.  Then clip changes length.  you can actually see the clip physically expand.   This means of course the drum hits are now no longer in sync and no longer line up with the snap to grid.   But its not a biggie.  I can use the Session Drummer method and drop the wavs in there.   Out of curiosity though i'd be interested in finding out why the convert to Groove is expanding the clip. 

Thanks Scook.    The loop construction gizmo is actually something i want to learn about.   I'll have a muck about with it and see what comes out.
 

thanks Paw.   So far SD works and i'll give Dimension a try also.   i noticed something weird regarding the single shot wavs.    If i try to drag it into an audio track nothing happens.  But yet if i drag in a larger loop file it plays fine.    If i then take that same single shot wav and drag it into SD it works.  Go figure.  

That's the option thats working for me too.