My Brain Hurts !

[10mmdave]

Okay, enough of looking for a load over on the "flatgun" section

I'm looking for a 165-170 pf load for USPSA Revo class (I do need to be 165 or

over don't I ??)

All this talk here about revo masters and sectional shoots etc etc I figured I might

as well try it.

I have 155, 180 and 200 grain heads,

A stock S&W 610 with a 6.5 inch barrel (wish it was a 5 inch)

Looking at 10mm cases right now as the 40's I loaded don't work

(more on that in another post)

Looking at using up some Titegroup powder (I know, I complained about this pwdr

earlier) 231, power pistol.

Thanks for any info you may have.

DaveP

[Jerry V]

Dave here's mine:

10mm win brass

Fed SP match primers

180gr Berry's RN

5.8gr W231

I know what you mean, loads run about 110-120 fps slower out of my 610 (4")compared to what is listed in the load books.

[MikeFoley]

My 4" 610 makes major PF with:

Zero 180 gr. JHP

Federal GM100M primers

Starline Brass

4.8 gr. VV N320

BTW, this is very close to my flatgun load.

[10mmdave]

Dave here's mine:

10mm win brass

Fed SP match primers

180gr Berry's RN

5.8gr W231

I know what you mean, loads run about 110-120 fps slower out of my 610 (4")compared to what is listed in the load books.

<{POST_SNAPBACK}>

Jerry ?? what kind of power factor are you getting ?

I use that 5.8 grains of 231 under a 200 grn LTC for bowling pins.

I get a 200+ pf out of this same 610

[Jerry V]

Dave,

I need to chrono. again, here's the reason why. I was using 5.6gr w/180gr West Coast RNFP and was getting 932fps. I switched to Berry's and got 921fps, a little too close 916 (165 PF) So I bumped up to 5.8 (listed as max.) to make sure I don't have any problems making major. But as a bonus, the new load's accuracy is more consistant. I plan on running the load through a chrono at the Speed Steel match this Sun. I'll let you know.

fomeister -- that's interesting, but every gun is different. I probably do need to try different powders, thanks for the info.

[FL Wheeler]

I used 180 Ranier, 4.7 Titegroup, aveage 976 fps for a 175 PF.

4" 610. I had to go with winchester primers because the Federals were flattening out from the pressure

[10mmdave]

I used 180 Ranier, 4.7 Titegroup, aveage 976 fps for a 175 PF.

4" 610. I had to go with winchester primers because the Federals were flattening out from the pressure

<{POST_SNAPBACK}>

Dang !?!?! flattened primers at 175

Are you using 40 brass or 10mm ?

Loading long or to 40 OAL ?

AND......are you using a frame mtd firing pin or an old style ?

(I ask this last because I wonder if you mean "pushed out"

primers and not flattened, just wondering)

[FL Wheeler]

40 Brass, 40 OAL, Frame Mounted, Just flattened not pushed out.

[Carmoney]

I worked up a major load for my 646 before I decided to let my son use that gun (and at age 12 he's better off shooting minor):

185-gr. Lasercast RN, 4.3 gr. of TG = 937 fps (ave) over my chrono for 173 p.f.

Regular Federal primers, obviously. Worked just fine for me.

Mike

[10mmdave]

I worked up a major load for my 646 before I decided to let my son use that gun (and at age 12 he's better off shooting minor): 

185-gr. Lasercast RN,  4.3 gr. of TG = 937 fps (ave) over my chrono for 173 p.f.

Regular Federal primers, obviously.  Worked just fine for me. 

Mike

<{POST_SNAPBACK}>

Thanks Mike, that load looks like a keeper, course I might go as lite as 4.0 of TG

under a 180 grn lead load for my 6.5 inch 610.

But then again I'm starting out with 10mm case so maybe I'll go as high as 4.5,

(untill I get this .40 ignition thing fixed)

Jeez, just remembered I have some 220 grn Westcoast heads, wonder how those

will work course the arc of flight might be a bit much.

[10mmdave]

Oh !! and thanks to all you folks for all your info, I'll repost later when I get some

solutions to this.

DaveP