H335 data discrepency

After doing various research, I've pretty much decided to go with H335 for my new #10 .223. It was a tossup between this and H4895, but I really like the way the ball powders meter.

Factory website data shows a max load of 25.3 = 3203fps = 49,300 cup
My old Speer manual shows a max of 27.0 = 3193, (no pressure data)
That's a huge difference in charge weight to get the same velocity. Speer manual uses a Mini14, 18.5" barrel @1:10 twist.
Barrel info is not given on the Hodgdon Data Center website.

I hate when we get conflicting data, and being new to this powder, I thought I'd ask you guys.
Intended bullet is 55gr.

I'd appreciate any comments from someone using H335.

get a third source.

Err on the side of current data, as recipes may have changed

I have 6 or more manuals and data is never the same. I would start on the low end and work up in small steps. One rifle may not have any pressure signs when another may.

Steve

2009 printed Hodgdon Reloading Guide shows:

223 Remington
case: Winchester
twist 1:12
barrel: 24"
trim: 1.750"
primer: Winchester SR
COL: 2.200"

H335 Start: 23.0gr 3018fps 40,800cup
H335 max load: 25.3gr 3202fps 49,300cup

I load H-335 in my .222 Remington 700. When I went "by the book" My loads did not achieve stated velocity. In fact I had one blow up on a fox that gutted it. Poor thing was dragging its guts through the snow until I put another in it to finish the job.
I called Sierra about bullet performance and the rep said that the bullet was moving too slow. He said use a chronograph when developing a load.
Well I did and , low and behold, I increased the load by 1.5 grains without ANY pressure signs and got 3200fps. (Optimal velocity for the bullet)
So 25.5 g H-335 in my .222 pushing a 52 grain bullet. 10 shots into a dime at 100yds. I feel confidant making any shot on a fox or songdog. I ALWAYS chronograph loads now...another indespensible reloading tool.

REMEMBER, WHEN THE POWDER MANUFACTURE MAKE A FORMULA CHANGE TO THERE PRODUCT THEY DO NOT SEND OUT BULLETINS.
IF AN OLD BOOK AND A NEW BOOK DISAGREE IT MAY NOT BE A PRINT ERROR.

or...they changed the chemicals/properties of the powder.

I have some OLD H4895...have to work up to the load on this. I use OLD manuals for reference. This powder REALLY shoots good though.

Also remember that Hodgdon doesn't make there own powder anyway.
Have had some WILD descrepencies with BL-C(2)