Velocity issues with Barnes Triple X handloads

[Heredoggydoggy]

Load data today is a lot more conservative than it used to be.  This morning I talked to an old benchrest shooter at the range, shooting his 22 Hornet loads, and the first thing he said was: "Well, I guess the lawyers have gotten to the bullet manufacturers, because I went over their maximum load on the data, and still see no signs of excessive pressure."  When he got done shooting, he said his best accuracy was what they called the "Maximum Load".    I was shooting my .219 Donaldson Wasp, and the only load data I could find was out of a real old Hornady manual. 

[Bofire]

  I have been reloading for about 50 years, I have not chronoed every load I developed, BUT I have never gotten published velocity from any handload or factory load I have chronoed. Some were WAY less velocity.
Carl

[higunner]

On 6/24/14 I contacted Barnes again and briefed them on my research.  We discussed the differences in barrels vs. the guns actually tested by bullet makers.  This guy had a seemed to have a ton of knowledge.  He agreed with using overall velocity in this situation, while continuing to check for signs of dangerous pressure.  He confirmed that at 2492 f.p.s, the bullet will perform as designed.   Now I need to hit the range and see how they group.

[mazama]

Ishoot barnes bullets,because of their length I went to a lighter 210barnes,heavy bullets eat up powder space,i use 210 in 338win mag also338rum

[Stein]

Regarding the chrono, they are notoriously inaccurate.  If you shoot some drop tables and know the G7 for that bullet you can use online tools to reverse calculate the actual velocity.

[Heredoggydoggy]

I have been reloading for about 50 years, I have not chronoed every load I developed, BUT I have never gotten published velocity from any handload or factory load I have chronoed. Some were WAY less velocity.
Carl

I've been reloading for over 40 years, and have never even owned a chronograph.  A friend lent me one once, and I was afraid I'd shoot a hole in it, so I gave it back to him--unused!  I reload for accuracy, which is usually way lower than the published velocities. 

[h20hunter]

A bit of a double post since I put the same one up in the elk bullet thread....but....here is a 150 gr .270 that could have used a bit more speed. However, terminal performance was great.

[bod]

You might want to try H4350 or especially RL17.

[mazama]

I use R17 in my 338win mag,i save 4831sc for the338rum.

[Bob33]

Velocity correlates with pressure, but not enough to rely on it exclusively to ensure a load is safe.

http://kwk.us/chronographs.html

[bear nature]

I would try some  mag pro powder it burns a bit faster and will give you the extra velocity you are looking for with the shorter barrel. start charge is 64.5 and max is 72 which would put you around 2620 with a load density of 98% and will give you a more consistant burn. also you might look into your powder, sometimes you can just get a less than great batch or it wasn't stored correctly before you got it. I had some bad powder before and alliance sent me a new can and it corrected itself. I do believe that they do understate max loads to cover their butts, however I would be very very careful going past the recommended max, I have seen guns after someone developed their own load. so my advice is to try some other powder before you try to push the limit, watch your primer close and if it flattens it or bulges it back off! happy reloading

[higunner]

Problem solved, 71 grains of H4831sc 2478 f.p.s. .333" group @ 100 yards no signs of pressure. Done deal.