Dialing in a C Sharps 1885 45-70 BPCR

[Gunlaker]

If you are going to wipe between shots, I'd seriously consider taking your best load and trying it again but wiping with 2 damp patches per shot.

I spend a lot of time shooting with a chronograph and always see lower velocity variation with 2 patches rather than just one. This will translate into less vertical dispersion.

When it's hot and dry I use 3 damp between shots. Hard fouling will make an excellent load look poor.

Chris.

I haven't seen even a trace of leading after 15 shot string . If I run two Napa patches it's cleaned every trace of lube from the previous shot . Don't you need some leftover lube in the bore ?

I don't worry about leaving leftover lube in the bore. I just find that more wiping is usually better than less.

Given that the velocity variance you recently posted looks great, I would just keep doing what you are currently doing. But keep in the back of your mind that if you are at a match and you start getting unexpected vertical at the turkey and ram lines then you might need to run another patch between shots.

A couple of years ago at the Wyoming state midrange match it was very hot and dry. Bryan Youngberg said to me that he might use three patches instead of his usual two. As he has a lot more experience than me I copied him. We were fine, but a number of other shooters fouled out as the day wore on.

Chris.

[Snocat]

Crisp °6 degrees but pretty calm .On the way to the 400 yd mark to setup paper and had two coyotes trott across the range. Looked like a big male bird dogging some female company. They know the rifle range is trouble and usually avoid it . Might do some calling tonight [emoji16] Jack knows there trouble .
pretty good size track.

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[Snocat]

So sent more lead down range at the 400 yd mark . Chronographed everything. These are my best groups at 400 yds . Didn't take long for the wind to pickup but there were calm moments.
The Brooks 560 keeps coming to the top . Got to windy to shoot the 500 berm . I will post the FPS of everything I Tinkered with today.

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[Lumpy Grits]

Make note of the air temp and date on your targets, so you can track grouping as the temps increase.
Might want to include powder granulation and lot number.
Be sure the crono battery is fresh and not sit'n in the cold to long.
Try the 72 gn load with the PJ Creedmoor bullet.
Can you post a picture of the Brooks 560gn that shoots so well?
Great pictures, and TNX for posting them!
G.

[Snocat]

The 530 PJ I think you guys are on to something with trying 16 to 1 mix . When I go any hotter than 63 grs swiss my groups starts opening up. Still no leading at all.

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[Lumpy Grits]

I run 30:1 alloy and DGL lube, with 70 gns of Old 'E' 2F in my .45-70 loading, very pleased with what the targets show.
Have you tried the coffee filter 'wad' over the primer yet?
Sure rounded the groups for both my .45-70 and .45-90 loads.
Come summer-You may well have to switch out lubes as SPG likes to 'bleed' in warm weather. I've been very happy with DGL.
G.

[Snocat]

30 inch barrel 3x3 patch just damp with 5 to 1 Napa one patch between shots dry swab chamber.
30 " drop tube . BR2 coffee filter under charge .30 veggie traceing paper between bullet and wad.
Temp mid 30s

530 PJ 62gr swiss 11/2
1119
1118
1118
1120
1119

510c baco 62gr swiss 11/2
1125
1127
1124
1127
1126

Next day, temp started *10 got up to *20

530 PJ 63gr swiss 11/2
1120
1116
1104
1107

530gr PJ 68 swiss 11/2
1143
1143
1137
1138

510c gr baco 70gr Goex express 2f
1172
1173
1175
1174

560gr Brooks 70grs swiss 11/2
1148
1152
1158
1162
1152

560gr Brooks 72gr swiss 11/2
1175
1177
1176
1175

PJ 530 72gr swiss 11/2
1200
1203
1206
1199
1206


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[Snocat]

If you are going to wipe between shots, I'd seriously consider taking your best load and trying it again but wiping with 2 damp patches per shot.

I spend a lot of time shooting with a chronograph and always see lower velocity variation with 2 patches rather than just one. This will translate into less vertical dispersion.

When it's hot and dry I use 3 damp between shots. Hard fouling will make an excellent load look poor.

Chris.

I haven't seen even a trace of leading after 15 shot string . If I run two Napa patches it's cleaned every trace of lube from the previous shot . Don't you need some leftover lube in the bore ?

I don't worry about leaving leftover lube in the bore. I just find that more wiping is usually better than less.

Given that the velocity variance you recently posted looks great, I would just keep doing what you are currently doing. But keep in the back of your mind that if you are at a match and you start getting unexpected vertical at the turkey and ram lines then you might need to run another patch between shots.

A couple of years ago at the Wyoming state midrange match it was very hot and dry. Bryan Youngberg said to me that he might use three patches instead of his usual two. As he has a lot more experience than me I copied him. We were fine, but a number of other shooters fouled out as the day wore on.

Chris.

Thanks for the real world experience with how not to foul out in the heat .I have no experience with shooting when it's hot .

[Snocat]

Make note of the air temp and date on your targets, so you can track grouping as the temps increase.
Might want to include powder granulation and lot number.
Be sure the crono battery is fresh and not sit'n in the cold to long.
Try the 72 gn load with the PJ Creedmoor bullet.
Can you post a picture of the Brooks 560gn that shoots so well?
Great pictures, and TNX for posting them!
G.

To be fare I shot the 560 Brooks when it was dead calm . When I got to the 530 PJ the wind started and was switching every few minutes seem to have at least one ribbon straighing out somewhere along the way.

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[Lumpy Grits]

Thank you for the great picture
The PJ is a Brooks copy, correct?
That 560 Brooks does look good.........
G.