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Honkytonk View Drop Down
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    Posted: March 28 2019 at 3:05pm
The last of my winter projects to prove at the range hopefully tomorrow. I had replaced a DAI Mgt mount with a Addley Precision on my No4 MkII sniper clone. Still using the 1.5X4 Leupold Freedom scope. I'll start at 25 yds to get on paper and go from there. I've bore sited it with my old Tasco rig but I find it's kind of hit and miss. I'll be using 174 gr FMJ boat tails by PPU. 39 grs of H4895 and PPU brass. It's been a good combo for my other Enfields for accuracy.
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Goosic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: March 28 2019 at 5:59pm
Post the results please.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 29 2019 at 8:28am
Goosic. I just got back from the range. 100 yd range was busy with our local SWAT team, so I used the 25/50 yd. As mentioned, I had bore sited my rifle. First shot was 6" high at 25 yds. Once I adjusted (a few more rounds) I moved to the 50 yd. marker. A couple more shots to bring it down to where I think I'll be in good shape (on paper @100 yds) Final three shot string... .32" group. Two touching, one just a hair away from touching those. Very happy!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bear43 Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 5:45am
Sounds like you have a winner. Let us know how she does once you can get her to the 100 yard range.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 6:03am
Will do. Hoping to get out again this week. This rifle consistently shoots 1.5" groups @ 100 yds. As it only has a 4X scope (I like the idea of shooting a sniper clone with roughly the same optics as WW2 soldiers issued with No4's had) and my skill (or lack there of) that seems to be the spot it likes. I plan on shooting this one and my L42A1 clone lots this summer. I made some head sized targets, (eyes, nose mouth) and aim for the nose! While probably not PC, and I don't mean to offend anyone, it makes it a little more fun!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 7:18am
I doubt you could improve that grouping.  Any LE that consistently groups 10 shots at 1.5 MOA is doing very good, including match prepped rifles.  You may also find that groups are even better at longer ranges (in MOA).

I suspect your load is near maximum.  Hodgdon lists 38.0 gr H4895 with 174 gr bullet and Remington case as max. Military cases will have less volume and probably should back loads off a a grain.  PPU cases seem to be closer to military than commercial construction.  

I used to run my loads a bit on the hot side, I thought it gave better accuracy.  I backed off a bit and found accuracy was still acceptable for my purposes and it reduced case stretch and I get more reloads from cases.  Also, less recoil which is an advantage to match shooters in the rapid stage.  

But, if you are hunting at mid to long ranges, I can see a reason for pushing loads to max velocity.  Your probably not shooting many rounds per year and recoil is not an issue, nor is brass life.

 The No. 4 action is plenty strong, and has been proofed for 7.62 NATO in the Converted rifles back in the 1960s for commonwealth Service Rifle match shooting.  

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 7:48am
Britefrifles. I read your reply. I have my Hodgson Edition 26 Data Manual in my hands. 180 gr Starting load for H4895... 37 gr (2221 ft/sec. Maximum load... 40 gr (2295 ft/sec.) That's why I chose 39 gr. No need to push the envelope. Wonder why the different data? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 8:06am
I believe I figured it out. My Hodgson manual doesn't have .303 data for 174 gr. I assumed if 40 gr of H4895 was Max for 180 gr bullets, it would be similar to a 174 gr projectile. Was I mistaken in my reasoning? Anyway, I will reduce the powder to 37 grs. Not sure where my head was when I did this bubba calculation.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 11:35am
What year/edition is your manual?  Try the Hodgdon web site, that’s where I got the load data.  



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 11:53am
HT. With the H4895 loaded over a 174grn bullet my Reloading data indicates a minimum start of 34.3 for 2100fps, 35.8 for 2200fps, and 37.3 for 2300. Hodgdon is saying to not exceed 38.0grns  of the H4895. 38.0 grns over a 174grn .311 bullet gives you a max muzzle velocity of 2446fps  with 43,600 CUP...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 2:46pm
Goosic is correct.  I would trust the powder manufacturers recommendations.  

Published reloading data is all over the place for max charges. Some powders more so than others.  Formulations are changed from time to time.




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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 4:28pm
I indeed believe you both. As I mentioned, I have loaded many 180 gr Sierra ProHunters with 39 gr of H4895. Max load for this is 40 grs. My Hodgson 26th Addition does not have loading data for174 gr. My mistake was assuming if 40 gr of H4895 was max for a 180 gr projectile, and I've loaded and shot many dozens of this handload with 39 gr of H4895 powder, I assumed a 39 gr powder load for a 174 FMJ BT was well within the safety zone. I was truly mistaken, as my assumption is proven wrong. I actually feel humbled, as I always tell my buds to never load any bullet to max. Won't happen again. Thanks, gents!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: March 31 2019 at 6:39pm
HT, the Hodgdon website also lists 38.0 gr. H4895 as max load for 180 gr .311 dia SP bullet at 2400 fps.  

I doubt you over stressed the action, especially if you kept the chamber clean and free of oil and grease.  

I was rather embarrassed after shooting hundreds (perhaps 1000) rounds of 174 gr SMK with 43.0 gr Re 15.  It was a published load, but when I chrono’ed it at over 2550 fps, I cut back by 3 grains.  This load had consistently grouped at 1.5 MOA for 10 shots, occasionally under 1 MOA in my No. 4 Mk 1/3.  But the 40.0 grain load performed almost as good and was much easier on the brass. 

The Sierra 5 Ed. manual shows 37.3 gr H4895 as max for the 174 SMK and 180 SPT at 2300 fps from a No. 4 Mk 2.  However, the Sierra manual typically gives charge weights for increments of 100 fps, so this is unlikely to be the load at maximum pressure. 

What I normally do before working up a new load is research the published data.  That means going to several sources.  I tend to use the powder makers data online as the most up to date if in doubt, and adjust down for military cases.  


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