New Bullets Coming Soon!

[Harleycolt]

For the past couple of years I've been trying to get Swift bullets to make a 210-225 grain 10mm (.400 Dia)  bullet along the lines of their A-frame  handgun bullets.  Well today I received an email informing me that they will be making a 200 grain A-frame 10mm bullet!  With expansion at 850 GPS expanding to 1.65x their original caliber up to 2000 GPS. I don't have any other info on it except it will be available within the next 6-8weeks. I had some of the 41 caliber resized to. 400 and they worked good out of my RIA double stack,  didn't have a chrony but will be buying one here real soon.  Shadow, if I get some earlier I'd like to send some your way to test out and see what you think!  You're our modern day  Jeff Cooper in my book!

[AlinMi]

Swift makes some great bullets, not cheap, but man do they get the job done.

[Spudmeister]

That is great news!  Thank you

[The_Shadow]

Harleycolt, I appreciate the moniker and respect.  These are sounding like some interesting bullets for 10mm from Swift Bullets.  Not sure how well they will sell, as mentioned the price point might be a stumbling block.  200 grain bullets for 10mm are an great weight, however their ogive has to be fairly short by design.  So with all things in mind, the testing of various loads can get expensive looking for the perfect performance potential.

Cartridge overall length being 1.2500" - 1.2600" and then you take and subtract the case length of 0.992" from that leaves  0.2580" - 0.2680" of bullet nose profile sticking out the casing.
We do see cases being shorter in the 0.9870" range with helps to no have the start of the ogive inside the case mouth.  Having the ogive inside or at the casing edge can reduce crimp friction and possible bullet setback issues.
We have seen some of the bullets wit MEPLATS over 0.300" needing to be seated slightly shorter at 1.2420" - 1.2450" for reliable feeding because of the tipping angle as they try to enter the chamber.  The deeper we seat, the less powder we can utilize safely.  Revolvers may allow for longer loaded potential over the semi autos.
Then we have the actual bullet length to consider...FMJ styles are usually shorter than Hollow Point designs, thus the longer they are the case capacity is reduced for powder charge potential.  Therefore a good balance of case volume, powder selection by density and burn rate play into the pressure peak spike as it pertains to safety.

Looking forward to seeing what Swift comes up with in their design as it relates to the 10mm potential performance. 
Their 41 caliber 210 grain is only 0.730" long and that somewhat comparable to the Hornady XTP Length 0.6840" &  Speer Gold Dot 0.6920" - 0.7000"