This section is for reloading and ammunition only, all loads found in here are used strictly at your own risk, if in doubt ask again.
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.
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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
I've just started reloading for my .44 magnum Taurus LBR and for a 200gr lead RNFP with Hodgdon HP-38, I was curious why the propellant weight was different for a different style bullet of the same weight. I appreciate the BC will be significantly different, but I didn't expect this. Does anyone know why?
That's the bit I don't understand, why is the maximum pressure nearly double and the charge weight 38% higher for the jacketed hollow point? I expected the maximum pressure and charge weight to be the same for both.
dromia wrote:One is jacketed and the other is cast.
The velocities and pressures are different reflecting the difference in charges.
As to why Hodgdon's data base selected those two loads you will need to ask them.
As I said you will need to ask Hodgdons about that as we can only speculate.
Perhaps they see lead (wrongly) for the lower velocities and cap at that. Cast boolits can easily be driven at the jacketed velocities cited.
Jacketed does need a higher start pressure than cast so they are more limited in their application as they cannot easily be driven at the lower velocities that cast can do.
Or perhaps they are applying some other considerations like SD parameters as to what constitutes acceptable loads in their minds.
You must remember all this data is selected for every bullet in every gun, that is why multiple sources are need to give you a better feel for the calibre a bullet as what each source provides is their take on their data in their equipment. You need a good aggregate across that to get a good feel for what your starting point should be.
Come on Bambi get some
Imperial Good Metric Bad
Analogue Good Digital Bad
Hodgdon might have taken into account that lead loads are either classed as reduced loads (ie plinking) or suited for gallery ranges where a muzzle velocity cap might be in place. Only hodgdon can answer that. I shoot published lead loads for 357mag with no problems indoors and out to about 300yrds with a marlin.
I've fired an e-mail to them, so it will be interesting to hear what they say (assuming they reply). I don't doubt it will work, it was just a bit puzzling.
