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Light load for a CMP match

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stevenjay1 View Drop Down
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    Posted: October 09 2018 at 6:31pm
There is a monthly CMP match at my club and I shot my No4 Mk2 last month and I did awful!  Mind you, I'm over 70 and don't expect to out shoot a 20 year old but I would like to give him a run for the money. My thought for the next match is to reduce the powder load (IMR 4895) with a 174 grain .312 Hornady bullet so I'll hit close or in the black at 100 yards without using "Kentucky windage". Plus less recoil would help as well.  Has anyone taken this approach and if so, how were the results? Thanks, Steve
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 6:33am
I regularly use a Hornady #3120, 150 Gr bullet at about 2450 fps, out to 300 yds its the same as a MkVII & recoil is noticeably milder.
The Hornady #3120 has a better profile than the Speer 150 gr bullet for seating depth, BTW.

My no 4 Mk2 actually prefers the 150's to the 174/180's!
I don't have a 4895 load, as I use 38.0 gr 3031, but go from the manual 1/2 way between 2400 & 2500 & you should be really close.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 8:06am
I can tell you my No4 Mk2 Sniper clone shoots Prvi 174 FMJBT's with 39 grs of H4895 very well. I had experimented with 40 grs of the same powder, but it likes this load the best. Good luck!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stanforth Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 8:42am
Originally posted by Honkytonk Honkytonk wrote:

I can tell you my No4 Mk2 Sniper clone shoots Prvi 174 FMJBT's with 39 grs of H4895 very well. I had experimented with 40 grs of the same powder, but it likes this load the best. Good luck!
 
Exactly what I use at the shorter ranges, 100 & 200 yards. I have a permanently damaged right shoulder so recoil is an important factor.
When shooting my Envoy (7.62mm) at longer ranges the extra weight of the rifle helps me use hotter loads.
 
 I have used 140gns gas checked lead with 10gns of Red Dot at 100 yards in my SMLE and my No.4 but it is only marginally better than staying at home and watching day time TV.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SW28fan Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 11:36am
I use the 150 grain Hornady over 22 grain of 4759 for a wopping 1800 fps but it shoots into the center of a SR-1 at 100 yards using the battle sight  I claimed my first win in a CMP match with it in my P-14.  It has very little recoil
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Zed Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 11:42am
Was that supposed to read 100 yard's? I hope so! 
If not I'll have to take up sewing instead of shootin'Shocked

Steve, if you find a good reload that suit's your shoulder and groups well; you can possibly alter the front sight blade height to zero it to 100 yards. It depends on what the original sight height is of course.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stanforth Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 1:25pm
Originally posted by Zed Zed wrote:

Was that supposed to read 100 yard's? I hope so! 
If not I'll have to take up sewing instead of shootin'Shocked
 
 
May I recommend a good supplier of tools and accessories for your new hobby....
 Geoff Ives. Sewing machine Services. Oxford.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 2:45pm
Me Owwwwwww!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SW28fan Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 4:09pm
Yes 100 yards, I corrected the post above
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stevenjay1 Quote  Post ReplyReply Direct Link To This Post Posted: October 10 2018 at 5:59pm
There are some great suggestions, thanks.  I like the load with 4759 but that powder is no longer made.  I also like the idea of shooting cast bullets.  My No4 has a mint bore and should do well with cast bullets.  However, I no longer cast.  Does anyone know who cast .312 or .313 303 bullets?  Thanks
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: 6 hours 26 minutes ago at 10:16am
Steve, I shoot a fair bit of CMP VMR.  My No. 4 shoots very good with the .311 174 gr. SMK and the .312 Hornady 174 gr Match.  The bore on my No. 4 slugged at 0.3035.  If your bore is a bit on the large size, the .312 Hornady may do better.  I'd bench shoot the rifle with a few different loads and see how it does first.   
 
I found Re 15 and Varget does very well with the 174 gr. bullets.  I load with 40 grains of either powder, produces velocities a bit lower than the Mk VII service cartridge, about 2370 fps if I recall correctly.  I've not actually tried 4895 in the No. 4, but Re 15 and Varget meters better, Varget is less sensitive to temperature change.   I don't weight all the charges either, just not worth the effort for this rifle.  This load in my rifle shoots about 1.5 MOA off the bench for 10 rounds, just about holds the X Ring on the SR target. 
 
My best scores in the CMP VMR matches were 293-9x and 290-11x with my No. 4 loaded with the 174 gr. SMK and 40 grains of Re 15/Varget.  I use a Creedmoor shooting coat and US Military 1907 type sling.  I've also reduced the size of the aperture on the Mk 1 sight (allowed by CMP rules), this was critical for me to see the front sight clearly.  I also use 1.0x shooting glasses. 
 
If your rifle is a Mk 2, it should have the 1 MOA click adjustable rear sight; and you'll have to adjust the front sight (left or right) to zero the group at 200 yds (or if you shoot the reduced target at 100 yds).  No real need to change the front sight height, just record the rear sight elevation setting for the range you shoot at.  I find the 174 gr. bullet at a reasonable velocity has very little wind drift out to 200 yards unless your in a fairly stiff cross wind. Then you'll need to apply some "Kentucky Windage".  
 
I've done a bit of cast bullet shooting from No. 4's and I've never gotten close to the accuracy I get with jacketed bullets.  Perhaps I didn't experiment enough or used a large enough bullet.  The LE barrels groove diameters are typically larger than 0.312 , so I'd think you would need a 0.315 or so diameter; I'd slug the bore to find out.  The other benefit of jacketed bullets is that the higher velocities give less wind drift.      
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