RPR 6mm Creedmoor load data.

[Bulldog10]

Anyone running SMK 110 in a factory RPR tube? What’s your load running? What powder? Also anyone running Hornady 108 ELDM in a RPR 6 Creedmoor?

 

[Sthomas2578]

I hope to take mine out this weekend to start the process. Cleaned it and will be sighting in new scope this weekend. Bought some ELD 108s for that reason. Let me know if you find a good load to start with.

 

[Bulldog10]

Thanks sThomas. I bought some Hornady 108 eldm over the weekend. I plan on developing a load for those next Monday. I’m just hesitant to buy the SMK 110 because Sierra says 1-7 twist or faster https://sierrabulletsblog.com/2017/10/03/sierra-bullets-6mm6-5-creedmoor-load-data/

 

[Sthomas2578]

Yeah, that's why I haven't bought any. Good luck in your load development. Let me know what you find out. I'm about to start mine as well. Maybe we can share results.

 

[bschneiderheinze]

110 sierras Hornady brass 41 grains of h4350 CCi primers velocity around 3000 my RPR stabilizes them fine with hits on steel from 300-1200 yards

 

[Sthomas2578]

Thanks!

 

[47guy]

i shot quite a few of the 110s and they would not shoot out of 3 different 6CM 7.5 twist barrels...my buddy just chambered a 7 twist krieger in 6XC shooting the 110s over RL26 at 3040 and printing 1 hole groups at 100yds...we have a match this saturday out to 850 so we will see how they perform.

 

[Sthomas2578]

Well obviously the RPR 6mm Creed is a 1:7.7. I wonder if would have problems?

 

[47guy]

id only buy 100 of them if your going to try them...as i said i shot 200 of them in 2 hawkhills and one bartlein all 7.5 twists and they would not shoot at 100yds...if a bullet wont shoot at 100yds im not going to chase it any farther.

 

[Sthomas2578]

Agreed!

 

[bschneiderheinze]

I just got back from the range and mine shoots them fine .5 at 100 and on steel from 300 to 1200 I’m on my second box of 500

 

[Sthomas2578]

What powder do you load yours with?

 

[bschneiderheinze]

H4350

 

[Sthomas2578]

Thanks. Now to find some H4350...

 

[Bulldog10]

I’m on vacation and have not checked this in a while sorry. Thanks for all the good info.

 

[Sthomas2578]

i shot quite a few of the 110s and they would not shoot out of 3 different 6CM 7.5 twist barrels...my buddy just chambered a 7 twist krieger in 6XC shooting the 110s over RL26 at 3040 and printing 1 hole groups at 100yds...we have a match this saturday out to 850 so we will see how they perform.

So how did they do?

 

[47guy]

So how did they do?

So we had 30 to 45mph winds today my buddy shot a 20 outta 40 possible...21 22 24 we’re high scores normally in the high 30s

The 110s shot very well just hard to make calls in that wind.

 

[Bulldog10]

Sthomas I found a good load with the Hornady 108 ELDM. I went with 41.6 grns H4350. AVERAGE FPS 2994 SD2 ES 4 shot over a Magnetospeed. Remington 9 1/2 primers.

 

[Sthomas2578]

Wow! Thanks. I just got some H4350 so will definitely get start loading.

 

[quickdraw]

I had a good node at 41.6 and 41.8 of H4350 with speed at 3050 and 3053fps. I decided to load 41.7gr. Hornady brass, Fed 210M primers, 108gr ELD-M bullets. 7.7 : 1 barrel.

 

[BLDTYLRY]

Pre-ordered a case of Prime ammo. Figured I get to shoot good ammo then have quality cases to reload. Will have to take a few apart to reverse engineer if they shoot good.

 

[Sthomas2578]

Just went and fired my 6mm Creed and got it sighted in with 108gr ELD MATCH which were incredibly accurate. Started working on a load comparing H4350 and IMR 4451 with best numbers at around .5 in. Am working on ckewning and restoring brass for next firing and was wondering if anyone knows which Hornady Headspace gauge to use? I can't seem to find it anywhere. Any help is appreciated.

 

[47guy]

same one as the 6.5CM look at the .375 at the bottom left of the page

https://www.hornady.com/reloading/p...gauges/headspace-comparator-anvil-base-kit#!/

 

[Sthomas2578]

same one as the 6.5CM look at the .375 at the bottom left of the page

https://www.hornady.com/reloading/p...gauges/headspace-comparator-anvil-base-kit#!/

Ok. Thanks for the help. I didn't see 6mm Creed mentioned so didn't want to assume.

 

[Forward543]

Working up a load for an rpr 6 creed with a pva barrel. Just starting powder workup with re 26 and 105 rdf, 108 eld m, and berger 105 hb. Running powder from 42.5-44.9 grns. I will update if anything shows up.

 

[Bulldog10]

Forward543 I would be very interested in hearing about Reloader 26 with the Hornady 108. I used RE 26 in my 6.5 Creedmoor and went over 2900 FPS. I think about using it the 6cm interesting.

 

[Forward543]

Here is the berger105 ocw

 

[Forward543]

105 rdf. These may have been from early shots/ barrel break in, but they did not do as well as the berger.

 

[Forward543]

I think you could go with a faster charge still, but i am trying to go easy on this barrel to see if i cant get more life. So far at 90deg the berger at 44.5 ish looks nice at 3015fps. Ill test the eld m next.

 

[Forward543]

Here are the 108 eld m. Looks like either eld m or berger hb with about 44.5. I will test all three with length tests around here.

 

[Bulldog10]

Forward what was the velocities with the Hornady 108 eldm?

 

[Forward543]

Right around 3000 fps with a 26" barrel.

 

[Forward543]

i shot quite a few of the 110s and they would not shoot out of 3 different 6CM 7.5 twist barrels...my buddy just chambered a 7 twist krieger in 6XC shooting the 110s over RL26 at 3040 and printing 1 hole groups at 100yds...we have a match this saturday out to 850 so we will see how they perform.

What charge on those 110's? And how did they do?

 

[47guy]

What charge on those 110's? And how did they do?

42g RL26 and they shot fantastic....36 outta 40 possible

 

[mensajd]

Ignoring the barrel throat erosion issue (which may be endemic to the cartridge), H4350 and RL-16 are relatively temperature insensitive powders that are right in the sweet spot for 6mm creedmoor running 105gr hybrid bergers. Since these are also well tested, why not start with those?

 

[craigos]

40.55 Rl17 with a 110SMK 100 thou off the lands. 1 hole 100 yard groups, 3050 fps. 26" HH 1:7.5 twist, SAAMI reamer (.183" freebore). Alpha brass, F205M. ES 2fps.

 

[Sthomas2578]

So i took my RPR out comparing H4350 and IMR 4451 using my Chrono. Here are the results:
H4350 all using CCI #200 Primers, once fired Hornady brass and Nosler 107 gr CC BTHP.
Temp was 92 deg with 85% humidity
H4350
41.5 gr .981" chrono didn't work right.
41.8. .846" 2916 fps
42.0. .595" 2938
42.2. .333" 2957
42.4. .719" 2997
42.6. .365" 2986

IMR 4451
41.5. .201" 2892 FPS
41.7. .497. 2907
41.8. .592.
41.9. .367. 2915
42.1. .744. 2934
42.3. .203. 2959

 

[isaacspoon]

just picked up a new 6mm creedmoor. I also have a 2000yd range within an hour from my house, so i plan on developing a long range load. any prelim info from you guys would help. The powders I have currently are RL-17 and H4350. I also plan to get some H4831 SC very soon as well... these 3 powders will be the main focus in my near future in load development, but am open to others success stories not mentioned above

 

[quickdraw]

So i took my RPR out comparing H4350 and IMR 4451 using my Chrono. Here are the results:
H4350 all using CCI #200 Primers, once fired Hornady brass and Nosler 107 gr CC BTHP.
Temp was 92 deg with 85% humidity
H4350
41.5 gr .981" chrono didn't work right.
41.8. .846" 2916 fps
42.0. .595" 2938
42.2. .333" 2957
42.4. .719" 2997
42.6. .365" 2986

IMR 4451
41.5. .201" 2892 FPS
41.7. .497. 2907
41.8. .592.
41.9. .367. 2915
42.1. .744. 2934
42.3. .203. 2959

That's interesting. My load was using the 108gr ELD-M and 41.7gr of H4350 had my velocity at 3050fps. I found a node there but once I started loading there I started popping a few primers in the first 100 rounds I loaded so I'm going to back it off a bit and start looking for another node in the mid 2900's. This was happening in with new Hornady brass also so that was a little curious to me.

 

[Forward543]

Seems to have settled at 44.5 rl 26, 108 eldm, cci br2, 2.167 lto. Shot today at 88deg f 3114 fps out of 26" pva with .150 fb.

 

[Bulldog10]

Forward I would like to try that Hornady 108 eldm with RL26. What would be the starting charge weight ?

 

[Forward543]

I started at 42.0 grns with hornady brass. If you are unsure go to 40.0 grns and go slow, watching primers. Shoot some factory hornady 6creed to see what the case/ primer should look like.