BigLub Hollow Point

[AbitNutz]

Ok, so this is possibly the worst picture on earth but my Blackberry has its limits. I got my jig and tried a few bullets. The depth takes a bit of playing around with but I think I'm on to getting it right. We'll see how it shoots.


The hole looks to be absolutely centered. I used a 1/2" center drill, a cheap drill press and the special jig from Jim of Superior Quality Machine. Jim hangs out at the cast boolits forum. The bullet is from Dick Dastardly and is his DD/PUK/ROA-II Big Lube 210 grain.

 

[Oyeboten]

I imagine one could just put the Bullet into a Regular Jacob's Chuck, tighten enough to hold it, and do it that way also. The three little line-dents would disappear soon as it hits the Forcing Cone anyway...or slit a short piece of tubing which fits the Bullet, Chuck it in that, no dent lines that way.


Looks interesting! Looks good!


I will have to try this now myself!

 

[arcticap]

If a steel BB were to be glued into the hole, it might actually enhance the expansion characteristics much like a plastic spire point works.
However I'm not sure if doing that would work better at pistol velocities or not, or if rifle velocities would be required to produce the desired effect.

 

[BHP FAN]

http://www.forsterproducts.com/catalog.asp?prodid=627337

 

[Oyeboten]

If the Lead is soft, a BB or Nylon Ball in the end might just work well I think.


.45 Colt Powerball...more or less.

 

[AbitNutz]

I've found it's impossible to get the bullet centered without using some sort of a jig. I have the old Forster case trimmer hollow pointer but that only works well if the bullet is a loaded round in a case. As B/P doesn't have that, I found this to be about the best way to do it. With 40 grains of Triple 7 we'll see what happens as far as expansion. I do have some of the nylon balls to mess with if I get that far.

 

[MCgunner]

I'll be interested in the expansion tests. Your hollow looks a little bigger than the one my Lee mold casts, though.

 

[AbitNutz]

Actually the HP is very large. I looked at the at the Lee and it it's like a needle. This is a 1/4" with a 60 degree shoulder ending in a long point. The original bullet had a flat point and the hollow point completely replaces the flat. From the side, you can't tell the bullet's been altered.

If I blow this down the barrel at 900+ fps and it's pure lead. I'm hoping it will expand. I'm guessing at the velocity but I have shot the non-HP version of this bullet with 40 grains of Triple 7. It's a squeeze but I had Clement deepen the champers.

It shoots silly clean and I've never had a leading issue. The bullet is a bit lighter now so I'm really curious to see how fast it goes. I'll need a chronograph. I keep delaying getting one...mostly out of confusion what to buy.

 

[AbitNutz]

This might be a couple of better pictures. You can see how smooth and concentric the HP is. Also, you can see the rebated base in the 2nd picture that lets it slip easily into my ROA. The chambers are chamfered a bit and I'm sure that helps.

 

[MCgunner]

I've chronographed my ROA with the 220 lee and a full compressed charge of 777 at 1300 fps plus or minus with 95 fps max extreme spread. I was using a 2.8 lee scoop for the charge, but settled on a 2.5 as it's a bit easier to seat the bullet down. The load is so hot, though, I have a problem with the bullet pulling itself under recoil and the forcing cone will just hit the bullet on the last two rounds making cocking the gun a little rough. It doesn't always do that, but I've noticed it. I prefer shooting it with a 20 grain equiv charge of 777 and corn meal filler for normal targets, but it's one HOT sob with a full charge of 777 For comparison, I get about 950 fps with a full compressed charge of pyrodex P. My gun is bone stock, no cylinder mods.

 

[AbitNutz]

I understand the problem of the bullets moving under heavy recoil. I have had that problem but interestingly enough, I have not had that happen since Clement deepened the chambers. He said that there were some burs on a couple of chambers.

Like I said, he deepened the chambers, chamfered the chamber mouths and cleaned everything up. There is no transition or machine marks where this was done.

The DD/PUK/ROA-II Big Lube 210 grain bullet I use has a rebated base. I think that the tapered base, together with the work on the cylinder, makes the bullets hold better. They go in pretty tight but very, very smoothly. The bullets have a very even hold on the chambers.

At any rate, I don't seem to have bullet jump problems with max loads.