Need some ideas/help with a .243 load

[429421Cowboy]

*warning*Jacketed load help needed*



I happened to get an old box of the apparently now discontinued 105 Speer Hot-Cor 6mm bullets that my LGS gave me the other day that i thought i would come up with a nice antelope load with out of my Browning BLR, which has a 1-10 twist bbl.
I see on the net where guys are using them to get acceptable groups out of 1-10 bbls, i would be perfectly happy if i could get a load that is around 2"@100 yards with enough poop to take an antelope out to about 250-ish. Do you guys think this is possible with that bullet and twist combo?
Playing around with my ballistics program, at 2600fps it runs out of stomp just before 300, at 2800, the range is extended a bit more, but that depends on accuracy. My Speer manual lists a Rl-15 load (my prefered .243 powder) that stops just short of 2700fps, and a Rl-22 load that tops out at just below 3000, both powders i have on hand.
So my question is, which powder makes more sense? It would seem to me that the slower load would help accuracy more than a faster load that would open groups up, or am i thinking wrong?
Has anybody here used this bullet in .243 before?
Mulitiple searches turned up nothing. Thank you for any help gentleman!

[quilbilly]

That jacketed bullet is very deadly and expands well at lower velocities so should be more than adequate for an antelope at the longest range it still retains a velocity of about 1500 fps in my opinion. From my old Hornady ballistics book, if you start at an MV of 2600, at 400 yds the projectile is still over 1700 fps. Drop from a 200 yd zero is almost 30 inches so you would have to think about a shot at that range.

[429421Cowboy]

Thanks quil, i guess i will try it out and see what i can get done in terms of a group! I was hoping somebody would chime in about twist rate and what to expect at this slow of a twist and long of a bullet, but i suppose i will know when i try! If i can get it to stabilise out to 400 that would be great, but if 200 or 300 is all i can get, then oh well. I can knock an antelope over at about any range i want with my 7mm, but just to try something new and have never taken a goat with the Browning.
I will start out with the lighter load and see what i can expect, this rifle does well with 100 grain bullets so hopefully we can get by.

Thank you for your help, it is good to hear that i can count on it to open up a bit as it's slowing down.
Take care,
Cowboy.

[Mk42gunner]

I had a friend from Arizona that liked that bullet from his Rem 700 for deer, no idea what his load was though.

My Speer manual is #13, and didn't list Rl-15 with the 100 and 105 grain bullets. RL-22 is a lot slower powder than RL-15, so I think I would at least start with it.

Robert

[uscra112]

We used to say that if a IMR4350 wouldn't work in your .243 nothing would. I loaded and fired many, many rounds of .243 before I got hooked on boolits. My 105 grain load was 41.5 grains with CCI primers in a Rem 700 BDL, 24" barrel. That's not a max load, but it was the most accurate in that rifle.

RL-15 is too fast for that setup. A near caseful of RL-22 ought to work according to Quickload. 46.5 grains.

YMMV