Bigtimer

No... What Lee is saying is to match your sabot to your bore. We have already done that in the past with your old Optima and we found that the 24 was the correct sabot for that bore. There is a possibility that this bore will be different, so his suggestion is to remove the BP and push a 24 with a Nolser down through the bore. If it goes down easily it is to loose and you may not get the maximum out of the BH-209 or it might not sustain ignition at all. BH-209 is a progressive burning - smokeless type powder - it must maintain compression to maintain ignition.

If the 24 is TOO tight to get down then you might have to go down to a MMP HPH-3... I would stay away from a "crush rib" and use only if everthing else is to tight.

Also remember your new bore is going to be tighter now than it will be after you shoot a few rounds out of it. Shooting the conicals will smooth out your bore and may lead to easier loading sabots.

Stay with the plan if possible shoot your conicals with BH-209 to polish the barrel. If the BH-209 will not go off with the conicals switch back to T7 to get this process done and over.

Did you get any primers? yet... if so what kind...