You'll be reloading soon
Face it, the 10mm is for the reloader since no one else has stepped up for the plinker. Sure, we have DT, Reeds and others, but if you really want to blast, a lot, then you have to reload.
My experience is to be careful with Starline brass. I have had multiples of this brand split on it's second loading. It's first life was from Reed's in the flavors of 155 and 165 grain. 1400fps claims on the 155 grains. All worked fine as delivered, even when reloaded....
But when recovering brass, I have found some of the starline to be split on the side. Not gaping open or a blow hole, just a split on the side, nearly half the length of the case. I don't reload starline anymore. BTW, re-loaded to about 5% below max on those split cases.
The american eagle 10mm plinker (40S&W in a 10mm wrapper) by federal has stood up to max blue dot loadings with 180 grain copper plated bullets. No fouling noticed either. I loaded some new midway brass up to max also with JHPs, those were fun....And loud. Although, the JHPs are much easier to load, that copper plating peels off too easy on the plated cast bullets. Only 400 more to go, then I'm switching to lead or something different, even hardcast lead. I've had good luck with Lasercast in my 45. And yes, I know the speed difference from 45 to 10mm may make a fouling difference also, but at least the lead won't peel off and ruin my reloads.
Hope this helps.
Also, I pay 15.50 for a box of 50 American Eagle 40...err, 10mm loaded as 40, plinking rounds. RNFP, 180 grain, 1000fps, yep, that's the 40 in 10's clothing alright, but the brass is good and all I have to do is find it when I'm done. I own a witness 10mm, not always easy to find your brass.
jeepmor