Anyone have some safe starting loads for a 2R Lovell with 40 grain and 45 grain bullets?   

Not trying to make a 22/250.  Just want to shoot some minds loads in a high wall.

Thanks

What is the Twist rate.

This is from an old Lyman manual from the 40's for what it is worth.  Tom

Depends quite a bit on what brass you are using.   Those old published loads were doubtless worked up in brass that was typical for the time, which is to say rather thin.  G&H 2R brass thinnest of all; I'm morally certain because 2R users were demanding all the capacity they could get.  They were all pushing the pressures way up, too, trying to make the Lovell cartridge be what the .222 would be, but which they weren't going to get until 1950.

Recent Jamison/Captech brass is heavier, and any of the old loads should be backed off at least a full grain.  The stuff I made from .223/5.56 was/is heaviest of all.  Back loads off TWO full grains if you try that.   

I'm not guessing at this, I've weighed & measured on the order of two dozen cases from various sources.  (Did not do any Bertram, or any of the machined-from-solid stuff that Rocky Mountain put out.) 

Back in the day there were only two powders that worked in the Lovell, 4227 and 4198.  Now we have a dozen.  My particular favorite is Lil-Gun, which has a "fat tail" to the pressure-time curve, giving better velocity for less pressure.  12 grains is a mild pressure load which gives me around 2750 fps from a 26" barrel on a Krag action.  13 grains of 1680 generates the same pressure, (per Quickload) but the MV is only 2400 fps.  

I've tried AA#9, since that's what i use in the .25-20.  Notes say 10 grains gave me ~2500 fps but it wasn't as accurate as Lil-Gun.   Shelved that one.  

I have (swelp me I do not lie) a 2R built by Sedgley on a cast Ballard action, for which I tried a load using Sierra's 40 grain .223 diameter Hornet bullet.  10 grains of Lil-Gun keeps the calculated pressure down to 17k psi, MV ~ 2400 fps.  Also a cast bullet (Lee Bator, about 46 grains) using ~4.5 grains of Blue Dot, but I've only fired a few rounds, and none through the Chrony.  Should be around 1500 fps.   Accuracy was no better than minute of pop-can.  The gun being mostly a curiousity, I've never pursued it.

All of this is assuming Jamison brass, so in G&H or old stock .25-20 SS brass it will be safe.  (When Jamison brass appeared, I joyfully bought a metric ton of the stuff, fearing that it would be a flash in the pan.  Sadly events proved me right.)

I shoot a CC Johnson Borchardt with his R-2 Lovell barrel having a 16" ROT using 50 gr sp with 15 gr 4227 using the G & H brass predominatly, but mixed in with many other converted 25-20 SS cases.  Wonderful varmint rifle. 
 
Barnes: 45 gr sp  4227  16gr (Nonte suggests  15.5 gr)
            50 gr sp  4198  17 gr (Ackley agrees)
            55 gr sp  4198  17 gr