Home Forums Hunting & Shooting Muzzleloaders Randy Wakeman- Barnes XPB .460 cal (.451 275 gr) question

Randy, I am intrigued with this bullet. I use the 120 gr TSX when handloading for my 7mm-08, so the XPB has caught my eye. My concern- Barnes indicates expansion velocity is around 1500 fps. I was hoping it was lower. I think the Barnes Red Hot's open up down to 1000 fps?

What is your experience with the XPB 275 gr shooting into water or gell? Velocity/expansion data? Thanks again!

Well, there never was a "Barnes Red Hot." That is marketing lingo added by Knight Rifles: "Knight Red Hots."

A high performance muzzleloading bullet expanding at 1000 fps is moot. To get to 1000 fps, you would have to go through the sonic boom at trans-sonic speeds. travel in the transsonic velocity range. This is the worst possible situation for accuracy -- breaking the sound barrier at the muzzle and passing through it again on the way the target.

The XPB is a 6 petal handgun bullet (developed for the 460 S & W) that expands down to 1300-1400 fps or so.

With the load I'm using, expansion is no issue until past 300 yards.


The problem with water is no elasticity, no circulation, no air pockets (lungs), and perhaps most importantly-- no bones.

http://randywakeman.com/EnergyTransferandBulletBullistics.htm

Ok, I understand. Hold my hand another minute <img src="/ubbthreads/images/graemlins/wink.gif" alt="" /> and tell me what you really think about this: using a 275 gr XPB in a older Knight MK85, 209 primers and 90 -100 gr by weight of Goex Pinnacle. I have no idea at this time what my MV will be other than a scientific wild ass guess (SWAG) of ~ 1600-1800 fps. <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />
Thanks Randy.

A chrono is really the only way if you want some sort of an idea.

Consumer chronos as is may vary by up to 8%.

Should I abandon the idea of using XPB's in the MK 85/Goex Pinnacle?

I'm not suggesting that at all-- you just have to pull the trigger.