30R BLASER - Powder Choices

[Gun Barrel Ecologist]

Dchamp, any chance of running h4831 through quickload with 180 & 200 bullets?

[dchamp]

MRP is made by Norma (as is URP & 204) and is similar to RL22& VihtaVuori N560. If I remember right Hodgdon is importing Norma powders now. I use MRP in my 8mm Rem Mag and 300WM and like it a lot. A good place to locate powders is at gunbot.net; click reloading - powder - sort by brand or price by unit, then click on one that looks good and it will take you to the vendors site. Also click on in stock only

[dchamp]

Dchamp, any chance of running h4831 through quickload with 180 & 200 bullets?

200gr Woodleigh PP @ 3.59", 61.0gr H4831-100% fill, 2550fps, 780m/s, 49,473psi, 95.5% powder burnt

180gr Woodleigh PP @ 3.59", 64.0gr H4831-102% fill, 2702fps, 824m/s, 50,513psi, 94.5% powder burnt

Please remember these are only a guide as there are variables to consider like empty case volume (which should be measured) and burn rates (which may vary lot to lot) and primers (something QL doesn't consider).

[mchughcb]

Gee those numbers look light on to me. I would of expected a bit higher velocities.

[secondtry]

Gee those numbers look light on to me. I would of expected a bit higher velocities.

By bolt action standards, the numbers look conservative, BUT look at the pressure estimates, and remember that this round is available in, and was designed to be able to be used in, non jager block break open actions (amongst others).

In a bolt action the pressures could be cranked up by 10000 psi which would definitely increase velocity somewhat, but we already have rimless cartridges to do that in bolt actions..

[dchamp]

They may or may not be as I have had some loads be within a few feet per second of QL and some 100+/- fps different from QL. I have seen lot to lot variances of both powder and primers change muzzle velocity significantly. Also cases from different manufactures will vary in case volume by 2-4% in grains of H2O and this also has an effect. But since I'm not geeky enough to modify the powder properties I use QL as a guide to start with to determine a range of charge weights to try.

[stokesrj]

Quick load is an estimation tool, it can't possibly be as accurate as some folks expect. I've seen ten consecutive barrels produced by Kreiger with the same chamber reamer produce up to 200 fps velocity spread using the same loads. Real life is much more difficult to model than modelers would have us believe. Quick load cannot possibly account for variations as minute as consecutive production runs produce. I kind of have some insight into this as I'm responsible for modeling things that cost hundreds of millions of dollars per year to model and have hundreds of time the resources allocated that any ballistics modeling program has available to perfect it.
Bob

[AKMATT]

Stokesrj,

It is an adequate and accepted program for establishing a starting point for reloading cartridges that don't have a lot of data.

I would have thought Varget and 4064 would be good to use as well.

Cheers,

AKMatt

[stokesrj]

I agree it is useful for starting points, it is just that some think it much more than that.
Bob

[Gun Barrel Ecologist]

With break actions and odd rounds it's also handy to predict pressures of loads recommended for bolt guns - the .22 Savage and 7x57(R) being good examples

Dchamp, any chance of running h4831 through quickload with 180 & 200 bullets?

200gr Woodleigh PP @ 3.59", 61.0gr H4831-100% fill, 2550fps, 780m/s, 49,473psi, 95.5% powder burnt

180gr Woodleigh PP @ 3.59", 64.0gr H4831-102% fill, 2702fps, 824m/s, 50,513psi, 94.5% powder burnt

Please remember these are only a guide as there are variables to consider like empty case volume (which should be measured) and burn rates (which may vary lot to lot) and primers (something QL doesn't consider).

Those figures look on par with using 4831SC in the .300 Win - velocity is lower than Re22 at 100% fill

Stokesrj,

It is an adequate and accepted program for establishing a starting point for reloading cartridges that don't have a lot of data.

I would have thought Varget and 4064 would be good to use as well.

Cheers,

AKMatt

I would think Varget would be too quick with anything heavier than a 165g

[TheoR8]

If you had of asked me a year ago I was happy with the 180gr but since I lost a few sambar and converted to the 220gr woodies, what a difference that has made.

Chuck, I gotta give you some RWS 181gr UNI's to try one day.

[AKMATT]

Any new load data? I will soon be Reloading the 30R Blaser and thought I would check in.

Cheers,

Matt

[Gun Barrel Ecologist]

Not here, but rereading the thread and thinking about my own hand loading for other rounds since, I have to wonder if H1000 / aka AR2217 would be worth a try with 180-220g bullets

[Joe338ST]

If you had of asked me a year ago I was happy with the 180gr but since I lost a few sambar and converted to the 220gr woodies, what a difference that has made.

Chuck, I gotta give you some RWS 181gr UNI's to try one day.

Now those are nice projis- those RWS 181GRAIN UNI's.....

[Gun Barrel Ecologist]

I took 181g TUGs / what RWS calls UNIs to Zambia in late 2015, loaded over 80.5g of 2217 in the win mag, nothing hit took more than a step. Trouble I find is at high velocity - read short range with a Win mag - the tipping point between the rear shank exiting and disintegration inside the animal is hard to predict: bushbuck = exit, rusa hind = exit, rusa spiker = exit, warthog, kudu & rusa stag = disintegration of various degrees