.338 R.U.M. fans

[RUMLUVER]

OH the joys of playing with new toys huh Roy!

[royinidaho]

ubetcha!

Have some fellas on another board that did major experiment/testing with the Tubbs Final Finish on factory bbls with very good results and very few, if any, negatives. But it was done very carefully and not more than just enough loads were fired.

[RUMLUVER]

That seems to be not such a bad idea I may have to try it myself sometime with a new rifle of my own. Keep me posted on results and progress.

[royinidaho]

Ramshot Magnum in 338 Win.

Velocities similar to RL-22.

Pressure seems lower as indicated by much much easier fired case extraction.

A bit too slow for 338 Win. Will try it in 338 RUM when it gets put together.

Jury still out on accuracy though standard deviations are really low as compared to RL-22 loads.

RCBS ChargeMaster really likes it.

[HPBTMTCH]

I suggest trying the tubb F F on an old barrel first, and see how it goes. There is some throat erosion from doing firelapping. Which is not an issue with a .22 hornet, or maybe a 30-06, but something like a 7mm ultra mag, i think you would be taking a bit of life from that barrel. It`s important to push the lead slug through the barrel first to see if there is a problem, and go from there.

[royinidaho]

OK RUM guys, the ol Winny is closin' the gap.

Neglected to check the differences in a new lot of RL-22

[royinidaho]

Ramshot Magnum 84.5 gr
Sierra GK 250
CCI-200
200 yds

[royinidaho]

74.5gr RL-22
200 yds

[RUMLUVER]

Nice targets when I get a digital camera I will have to post some of my targets as well.

[royinidaho]

RUMLUVER,

Didn't intend to 'show off' targets. I forgot to post the spread sheet data.

Objective was two fold.
a) Ramshot Magnum works in the 338 win.
b) New lot of RL-22 w/charge = old lot resulted in a velocity increase of 130 fps to 2930 w/250 gr Sierra Game King.

I'll post the velocitys when I get home this evening.

BTW, SD for the RL-25 droped to 3 for 5 shots. Which is what I was looking for w/the Ramshot.

[RUMLUVER]

No showing off they are what they are "good groups"! I like that you post new info as you get it that just helps out other handloaders by sharing info. I would just like to be able to post targets too with my reloading data and chrono results. But on a side note I have never gotten good results with the Ram Shot Magnum powder but that has just been with my .300 and .338 RUM's.

[royinidaho]

Tested projected final Ram Shot Magnum load against trusted RL-22 load.

RL-22 load average velocity was w/in 10 fps of 2800 either way but with large SDs.

Bought new lot of RL-22 and here's what happened from shooting the above groupes.

I alternated targets with each shot. Some how it seems reasonable.

[RUMLUVER]

250gr SMK at 2930fps that's crazy out of a .338WM! I'm using 90gr of of IMR 7828 to get 3000fps out of my .338RUM. I'd bet your getting away with alot less powder than that. That's a pretty low SD to boot! Looks like you got yourself a heck of a good load there Roy!

[royinidaho]

Almost tho't the chrony went bonkers but every other shot was with Ramshot and they were spot on for velocity.

At the target says 74.5 gr RL-22???

I'm beginning to think that using RL-22 must be what its like to be married to the wrong woman.

I'm headed to the place I bought that pound and buy their entire stock if its the same lot number.....

But in a couple of weeks that bbl comes off and an REM takeoff 338 RUM goes on.

Going to do some forward thinking ignition experimenting. Should be fun. We'll see.

[RUMLUVER]

Let me know how it goes!