Developing Lead 185gr/200gr Load Pairing

Happy snow day to all of you in NC!  I stayed in today and did too much thinking about BE whilst keeping the infant warm beside me watching football.  

I read through the pet loads thread and liked the lead loads with 185gr for SL and 200gr for LL with the same powder charge.  The simplicity of it once you get a load developed really appeals to me.  I have some Missouri Bullets to test things out, coated and lubed to see what works the best for my gun once it's built.  I'm aiming for about 4gr of BE give or take a few tenths either way.

My extensive day dreaming today made me think to develop a LL load first, then load up some 185s with the same powder charge and then mess with recoil springs until the SL loads work reliably.  My worry is that changing recoil springs will change the performance of my LL groupings.  I know I'm not at a level to see a difference at 50y (averaged about 80-85 in SF over the last few matches), but I would value the knowledge and subsequent confidence in what the gun can do.

I also have a chronograph, so target velocity suggestions would be appreciated.

Comments greatly appreciated!

Thanks!

I find that N310 powder gives a smoother recoil than BE powder.  A plus on the SL.  In the pet loads section, I am sure you read "My [not me] load have been posted previously.  3.85 gr. VV 310, 200 gr. Oregon Trail SWC, 1.239 nominal OAL (really seated on the shoulder), 0.469 crimp, Federal brass (got a ton of it 15 years ago, once fired in new kart barrels), WW primers." from a High Master you know.  I did not have any issues with these loads and my recoil springs.

Yep, that is one of the loads I liked. I would like to switch over to VV at some point, but I have 8lb of BE to at least make a dent in first.

Q. If the shooter has 8 pounds of powder and 1 pound equals 7,000 grains and 4.0 grains of powder are used per round, how many rounds can be made ….
A. Enough for one heck of an afternoon of plinking….