BPI Rio Manual Load#140205-5443

[lil dinamo]

This is the BPI load in the 2.75" steel section of the Rio Manual with 1-1/8 oz of steel shot in the LBC43 wad with 40 grains of Alliant Steel.

I was just wondering if anyone here ever had it this load pressure checked and what the findings were?

[Jim Atlas]

I haven't tested it. And I wouldn't. 40 grains seems like way to much. Does it even fit?

[Duckwyatt80]

I have not had that load tested. But, if you look on page 18 that is my hand holding 3 Rio hulls. Rio hulls are very roomy for steel shot. I really like them.

[lil dinamo]

No. 40.0 is way too much and doesn't fit, but 32.0 does. Back in the day in the 10th edition of the Status Of Steel they used 34.0 with the lbc43 in the Federal, Fiocchi, and cheddite hulls.

I've used it with 32.0 and get about 1350-1400FPS over the chrony and patterns are good at 90% 40 yards with steel B shot. I was just curious about pressue and if anyone has done any testing with this particular load.

I called BPI a while back about it, but the reloading Curmudgeon nor his secretary could give a definitive answer.

[Dave in AZ]

This has come up numerous times over the last six years or so, and I would say that the general agreement amongst everyone is that 40 grains is way too high, and is likely a misprint for what should be a 3-inch load. Rios are large, but they're not that much larger then other holes, and the next highest powder is 35.5 grains for that load and a different hull.

People have asked BPI but they will never admit a load is wrong, ever. I've called them with Miss Prince unload of the week where they referenced a load from their previous advantages books and published the incorrect data with the same load number. I've also called them when two loads on a load of the week page are the exact same one has more powder but has less pressure and speed, it's clear that they mixed up those two loads. But the guy on the phone will never admit that it's an error.

[lil dinamo]

I've tried the 2.75" Fiocchi 7mm basewad version with the LBC43 but found the velocities to be on the slow side in the 1,200 to 1,300 range which was not even close to the published velocity of 1,475 fps @ 8,800psi. The Rio version seemed much more consistent.

[baltz526]

rio 12ga 2 3/4", Rio primer, 32gr of Steel powder, LBC43, 1 1/8oz of steel #3 barely fits. Any shot size larger requires a reduction of pellets to fit. 40 grains will not fit. Pressure would be way over any sane limit. It is not good data.

[roughshooter1]

I am loading 33 or 34 grain of A381 (commercial equivalent oh Alliant Steel) with a 70mm case, lbc 43 and 32g of steel. This produces between 1400 and 1450 FPS but is a tight fit in a cheddite case.

[lil dinamo]

I've loaded the Rio version using 32gr of Steel with B shot two pellets under an 1-1/8 for 31.50 grams of Bs are just slightly above the the top of the wad which they set back a 1/4" Inch upon ignition. They crimp perfectly for me. I'd like to maybe send this one off to have it pressure checked. Just so it's not producing over 11,500 per SAAMI specs.

[Shurshot]

Agree with Baltz 1000 x’s over ....40 grains is insane!

[goosepit2007]

That load does not fit and bpi should drop that load out of there manuals .....32 grains is it with 1-1/8oz steel and 2-3/4" rio hull