Max powder charge?

[William O.]

Was reviewing the instruction manuals for my Lyman .54 TR and noticed that one states that when using 3f and PRB the max charge is 100 grains, but the other says it's only 80 grains. Both manuals came with the rifle, with the first being printed on white paper bearing a 2006 print date staing the higher amount, the second on yellow paper in older looking font.
Any thoughts on this?

 

[mykeal]

Call Lyman (I'll bet it's 100 gr, however).

 

[rabjr]

Lawyers, :haha:

Look at an old Lyman reloading manual and look at a new one. They are just a bit different today than the old ones. Brought to you by to many sue happy people.

 

[necchi]

I got that same mix of white pages and a yellow one several years back in the box of a new cabelas hawkin I got..
Interesting,,I did some checking around and it's a 100 grns max.

 

[Dphar]

Anything over a 100 grains of FFF is a waste of powder unless the rifle simply will not shoot with 100 or less.

Dan

 

[jtmattison]

The white pages are from Lyman. The yellow are from Investarms. I go by the Lyman manual since they are the ones selling it. Investarms probably has lower charges to cover their butt legally. I trust Lyman to list charges they have tested to be safe. I shoot 90 grains of 3f in my Trade Rifle regularly.

HD

 

[PreglerD]

Investarm, the manufacturer of the GPR, is an italian firm. Italy is member of the C.I.P. So all ML from them are C.I.P. proofed. You can load them up to a mx. load of 132 grs or 1400 bar/20.000 Psi when using conicals.


Regards

Kirrmeister

 

[J.D.]

I wouldn't be concerned with max loads, but only with accuracy loads. IMHO, 70-80 gr pushing a RB is more than enough for deer.

God bless

 

[William O.]

Yea, I'm going to go with a max of 100 grains. Was just curious as to why such a big difference between the two manuals.

 

[Walks with fire]

Here is what I have found; 21" barrel 70 grains; 24" 80 grains; 28" 80-90 grains; 32" and up can use 100 grains. All .50's. The barrels will be safe up to 100 grains but don't get the best accuracy with that load unless the barrel is long.