high volume 303 loaders I have some questions

[ActionYobbo]

I am looking for a good high volume loading powder for the 303 British. I load lots of ammo and want to find a powder that gets the most per can with bullets in the 150 grain range.
I am currently loading 37.5 grains of 3031 with a 150 grain FMJ
I am not looking for low powered loads. I am just trying to keep the cost down. why use 46 grains of powder X if 37 grains of powder Y will do the same thing.
Thanks

Information

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[enfield303t]

The best thing to do it buy a couple of good reloading books and do your research from them. No matter what answer you get it is really only relevant to the person who gave you the information. What one gun works best with may not even be close to what your gun really needs. Accuracy is what really counts in the big picture, costs will vary a little but not much overall.

Getting into reloading at this time is never going to be the bargain it was just a couple years ago, prices have gone nuts and are staying that way.

You can also check this site, Hodgdon Reloading | Home

The way to save money on reloading is to purchase a good powder at what is a reasonable price the day you buy it.

[Parashooter]

Take your pick. Since your 3031 load generates low pressure, there are plenty of faster powders that can deliver the same velocity at safe pressure with a lighter charge. Just remember that the lower load-density (Fill %) of such loads, particularly with spherical powders, may result in inconsistent ignition/velocity/pressure/accuracy. Here are some estimates from QuickLOAD -

Cartridge : .303 British
Bullet : .311, 150, Sierra SP 2300
Cartridge O.A.L. L6: 3.075 inch or 78.11 mm
Barrel Length : 25.0 inch or 635.0 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Muzzle Velocity: 2500 fps

C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

Powder Fill Charge Charge Vel. Burnt Pmax Pmuzz B_Time
........ % .Grains Gramm .fps .. % . psi . psi .. ms
------------------------------------------------------
IMR 3031 84.6 37.7 2.44 2500 98.3 32086 7224 1.421
Ramshot X-Terminator 75.9 37.4 2.43 2500 98.1 35290 6936 1.388
Accurate 2015 80.0 36.9 2.39 2500 99.7 36247 6625 1.397
Hodgdon H322 79.6 36.8 2.39 2500 98.1 34592 6921 1.383
Vihtavuori N130 81.7 36.4 2.36 2500 100.0 38059 6310 1.358
Accurate 2200 74.7 36.1 2.34 2500 97.3 37371 6708 1.360
Alliant Reloder-10x 77.6 34.9 2.26 2500 99.9 35898 6560 1.392
Hodgdon H4198 76.2 34.1 2.21 2500 98.8 39107 6274 1.328
Accurate 1680 66.5 34.1 2.21 2500 99.4 38308 6347 1.346
Vihtavuori N120 77.8 33.9 2.19 2500 100.0 40080 5647 1.332
IMR 4198 77.7 33.2 2.15 2500 100.0 37743 6040 1.341
Alliant Reloder- 7 71.0 32.7 2.12 2500 100.0 40644 5760 1.362
Hodgdon H4227 72.0 31.4 2.04 2500 100.0 40450 5642 1.314
Hodgdon H110 61.4 31.4 2.04 2500 100.0 42447 5534 1.319
IMR 4227 72.0 31.4 2.03 2500 100.0 41073 5634 1.304
Accurate 4100 62.0 30.5 1.98 2500 100.0 47106 5078 1.260 ! Near Maximum !
Hodgdon Lil'Gun 61.3 30.4 1.97 2500 100.0 44588 5283 1.303
Winchester 296 58.0 29.7 1.92 2500 100.0 39180 5805 1.358
Accurate 5744 66.5 29.7 1.92 2500 100.0 39094 6015 1.332
Vihtavuori N110 72.7 29.4 1.90 2500 100.0 47830 5026 1.260 ! Near Maximum !
Ramshot Enforcer 60.6 29.4 1.90 2500 100.0 48793 4997 1.251 ! Near Maximum !
Accurate No.9 56.3 28.8 1.86 2500 100.0 51561 4857 1.218 ! Near Maximum !

[ActionYobbo]

thanks for the chart Parashooter. I will do some ore research from that information and try a selection of those powders.

enfield303t accuracy is not my main goal here. I count my ammo by the belt. I am trying to fill the belts as cheap as possible but with good consistent ammo. no point in running belts if they keep stopping.
a video explanation

[CINDERS]

I tried Win-748 in my 303's and it was a dismal failure as I was going for a high density load for low pressure, you could try ADI's 8208 at 34gn (Min) with a 150gn Hdy SP 2,392Fps Source 6th Ed ADI Hanloaders Guide 2013 I am sorta off light density loads after a not to good experience using Win - 760 in my 6.5/284 which I wont repeat here the results safe to say I had detonations from flash overs and the primers fell out of the cases when I opened the bolt the events were not concurrent but 3 out of 9 rounds did this bad news......retired the rifle and grabbed my spare 308 as one should always take a spare rig to the shoot.

[ActionYobbo]

I tried Win-748 in my 303's and it was a dismal failure as I was going for a high density load for low pressure, you could try ADI's 8208 at 34gn (Min) with a 150gn Hdy SP 2,392Fps Source 6th Ed ADI Hanloaders Guide 2013 I am sorta off light density loads after a not to good experience using Win - 760 in my 6.5/284 which I wont repeat here the results safe to say I had detonations from flash overs and the primers fell out of the cases when I opened the bolt the events were not concurrent but 3 out of 9 rounds did this bad news......retired the rifle and grabbed my spare 308 as one should always take a spare rig to the shoot.

yes I know all about winchester powders in my opinion they should not be used for anything.
you need 2209 for the 6.5/284

[CINDERS]

Yep using that along with RE-22 & 19, AR-2217, AR - 2213sc as we are subject to powder shortages quite frequently it pays to have at least 4-5 powders tested and loads worked out so when it hits you have a substitute powder combo.

[enfield303t]

I have loaded a fair amount with CR17. Bought around 8 lbs for 7.00/lb a few years ago. Works well.