7.5 x 55 with IMR 4759

dennis53

Does anyone have a good starting load/ max for IMR 4759 in 7.5x55 Swiss? Thanks,
Dennis53

jonk

What weight bullet?

Mine like 17 gr with a 200 gr cast lead.

A good plinker load; max would be something like 21 gr for that bullet weight. THIS IS FROM MEMORY- I'm sure on the load I use but not the max.

PA Shootist

With what bullet? I shoot some reduced-power loads with the Swiss 7.5, but not so far with SR4759. The powder SR4759 is designed as a high-bulk powder, to take up space in the case, and I use it often for cast-bullet loadings. I haven't found a suitable cast bullet yet for the Swiss K-31 due to the dimensions of the throat, etc., though I suspect there are some out there.

dennis53

I am hoping to use 150 grain jacketed bullets, although I could easily use 130, 165, or 180 grain as well. I'm looking for an accurate target load for 100 yd slow fire.

jonk

Well I'd start at about 18 gr for a 150 gr bullet.

Keep in mind that this is a powder not normally used for full power rifle loading. It can be used as a reduced rifle powder with much success though- just know that you are probably not going to break 2000fps. It will be very mild, have a ratherer curved ballistic path, and probably shoot low, requiring generous raising of the sights. May or may not be accurate- you just have to try.

For full power loads I use BLC2 or IMR 4895.