Today at the Bench.....

[JeffreyDeGraff]

Sounds like a very productive range day. You’ve got a lot of good data from it.


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[Harter]

A fellow on another forum ran the 25-06' loads through a load calculator. He says they should be 2000 fps MV which makes them 28-32 kpsi . Zilch . Zip , nada for lead fouling. This is the 3rd set of loads so real close to 100 rounds .

A little back tracking and the 7x57 was into jacketed speeds only a couple of gr below start loads for the 175 gr grand slam or hot cores .

[JeffreyDeGraff]

That’s great for the 25-06. What’s the next step for the 7x57?


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[Harter]

Looks like a retry neck sized . My sizers , 1 ea Lee and Lyman are squeezing the shoulder before they hit the neck . Not the first time I've had a full figured chamber that made huge gains for necking.

I scored a Lyman die set for 284 Win and ran them in there full touch on the shoulder.

Both the 257 & 25-06' went through the 6.5-257 AI with just a kiss from the 25 cal expander. It actually leaves the ID at .255 anyway without an expander.

The thing is that every rifle we shot last Saturday shot almost identical groups. I know for a fact that the 45-70 and 45 Colts were within their nominal operating windows and expected performance. The 358,257&25-06' are capable much smaller groups . So I don't know where that leaves me with the 7×57 . It may be that that's all it's going to do with this bullet or it might just be a matter of dialing in the happy place . It's been suggested that this chamber, and the 06' too, will come around with a little jump , a running start if you will . The .287-154 Hunter is completely different but has a .2 ish jump if I want the lube groove covered . It offered instant gratification but needs 2450 to hit the numbers.

[JeffreyDeGraff]

Can’t wait to hear the next adventure.


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[Harter]

I have another tray of workups for the 25 .
I'm exploring ;
Brass . After more digging I came up with 20 EW42 matched cases , a few WW and a few Super X. I loaded 5 ea with 12 gr Unique, plain base , and gas checked in the assorted cases .
Powder .
Throwing caution to the wind I started 1.5 gr below 120 jacketed data with the 125 gr cast and IMR 4831 with previous OAL . The idea being maybe this is just one of those barrel and bullet deals where it really wants to have a full snort and run wide open . Basically the load should pick up velocity where the Unique leaves off and about 8,000 psi less pressure with a longer push . The approximated velocity should be around 2400 to start into 2600 fps .

Herco data is like hens teeth . 300 gr data for 45 Colts is almost as bad .
Unique however runs from 6-7.0 for standard and up to 10.2 for Ruger/Contender up to about 25kpsi . The loads are primarily for that stupid 1-32 twist in the Rossi M92's . The SWC , 250-255 gr , in particular and to a lesser degree the 255-265 RNFPs don't return to subsonic well . I'm after a just barely sub sonic with enough heft to do what it needs to do . Anyway I started off with 7-8.5 gr of Herco that delivered round holes at 50 yd but probably only about 600 fps MV so I have this batch loaded 8.7 , 9.2 , and 9.6 gr mostly because thats where the measure hit . Typically what Herco data there is takes about another 1/2 gr over Unique for the same velocity in pistols ,it gains a little in longer barrels wo gaps . The Herco is slower and slightly bulkier . It should get me right into the window of 975-1025 fps .
If it works out I'll have to buy a 300 gr mould .

[JeffreyDeGraff]

I looked in an old Alliant pamphlet I have laying around. It has 7.2gr of herco with 300gr xtp for 670fps at 12,500psi. I don’t know if that is helpful or not.
For years when using herco the rule was to use unique data plus 1/2 a grain.


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[Harter]

I downloaded "the complete 45 Colts" manual and Lyman 38 to go with the real copy of the 43 , 48 , and 50th , 3 printings of the Hornady 68',72', & 82' , Speer #12 ....... The limited data , there's data for duplex and triplex loads in 454 in the Ackley book but Herco and 300s is nil ..... An experiment in a slower neatly wedged between 2 workhorses . That and I have about 5-6# of the stuff for the cost of about a gallon of gas out of route on a 800 mile road trip .

[JeffreyDeGraff]

The last 4 weeks or so, I finally got some reloading done. First I loaded 414 9mm with 115gr Rainier HP and Ramshot Zip. Next was 486 9mm with 124gr Xtreme HP and Titegroup. Last was 466 10mm with 165gr Rainier HP and Autocomp. I loaded all these on my 4 hole Lee turret press and using my RCBS Lil’ Dandy powder measure. Today I sonic cleaned and annealed 261 pieces of 32 Winchester Special brass.


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[Flyeralan]

Yeah, I have got to get back at it. So much life happening lately, my Mom passed a few weeks ago and my fifth grandchild was born on Thursday. All on top of adding a new puppy (who is quite a handful, lol) to our household a while back. I am hoping things settle to a new normal soon so I can get back in the shop. I have a new bore scope ready to see if I can see anything that is making my LRPV so finicky as of late. Also I am in the market for a new Marlin 1894 from Ruger that was just officially released/announced last week. I also have a snub-nosed 357 that I have done very little with since I bought it. So many projects, so little time.