Want to try a heavier bullet in my 9mm using a Lee 6 cav boolit

afish4570

The Lee 358-140 SWC is a good candidate in the weight range you list. That bullet's SWC nose is a truncated cone and the bullet base is beveled. You may or may not need to size this bullet, try a dummy load and check, but even if it casts a full .358 that doesn't leave a huge sizing job and the bevel base sizes well, Sure you will have to find the LOA that will feed in your firearm but that is very normal for truncated cone SWC bullets. It will work out. I'd cast them in BHN15 Hardball or #2 alloy as you need the alloy strength for 9mm loads that will function your firearm.

There are other shooters here that use this Lee bullet in 9mm and I hope they chime in for you. I've read posts about finding the LOA with this bullet in 9mm. They worked it out.

If you get this bullet the largest diameter that will function,  and the LOA that will function with a charge that is just powerful enough to cycle your firearm reliably, you will have a winner just by following those basics. Those basics are just normal for cast bullets and nothing new. If you do the basics well, your pistol will shoot better with these Lee bullets than with factory ammo.

The Lee 358-140 SWC is available in BOTH 2 and 6 cavity versions and neither one is very pricey:

https://www.midwayusa.com/s?userSearchQuery=Lee+358-140+SWC&userItemsPerPage=48

Shop around too you may do better than MidwayUSA.

NOTE:  because this bullet is flat nosed and has a flat and bevel base, it can be sized nose or base first through the Lee Lube and Size. Bevel bases size fine base first and the most you will have to do is size and tumble lube these bullets once before you load them after you determine your fit and functional load. I'd recommend Whites Deluxe 45:45:10 tumble lube if you haven't tried it. If you warm the lube and bullets first before tumbling, they dry clear and non-tacky in 1 minute and ready to load.

Gary