7.5x54 Mas Loads with 147 gr. Campros for MAS36

[Zee705]

Does anyone have a load developed for their MAS36 using 147 gr. Campros?

I loaded 5 rounds with 38 gr. (suggested starting) of powder I pulled from 8x63 Patron MG belts which is similar to IMR 4064. My Hornady manual listed the velocity at 2,200 fps but they chronod at 2,000 fps (10% low). I didn't put any of them on paper, just through the chrono. I have tons of this powder and the Campros are cheap so this is purely an economic exercise. I'm open to other powders too, Varget, either 4895 etc.

I'm looking for a load that'll zero with the sights at 100 yards.

Cheers

 

[mbogo3]

Lots of data in the Hornady 6th edition for many powders and bullet weights just not your reclaimed powder?The 150gr data reaches 2500-2600fps from a MAS36 test rifle.
Varget 37.6gr/2200fps-43.3gr/2500fps ..........150gr bullet
IMR4895 35.2gr/2200 fps-42.1 gr/2500fps.........150gr bullet
IMR4064 38.1gr/2200fps-44.4gr/2600fps......150gr bullet

 

[Zee705]

Ya forsure theres lots of data out there. I'm just looking for some specific loads to try instead of doing a bunch of development.

 

[Bowyer]

I get best accuracy with those bullets using H380 and Varget. Decent accuracy with pulled down chinese surplus 7.62x51 powder (41gr) and bullets, but they hit a couple of inches above POA at 100yds.

The most accurate combo I've found for my MAS is 170gr round nose (30-30 bullet) with 44gr of H380 & CCI 250 primers. It matches the sight's indexing perfectly. A close second is 165gr Hornady Interlocks with 41.5gr Varget.

 

[diopter]

7.5x54mm French MAS (Lee Precision Data)

Warning! Notes: These are loads from a similar cartridge. With NEVER EXCEED LOADS maintain Minimum Over All Length or longer. Large Rifle primer. (MODERN RELOADING Second Edition - Richard Lee)
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?
150 Jacketed Vectan TU5000 48.6 2740
Remarks: start load; min OAL: 2.800
150 Jacketed Vectan TU5000 48.6 2740
Remarks: NEVER EXCEED; min OAL: 2.800; 39,187 cip

150 Jacketed IMR IMR-4064 39.7 2450
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4064 44.0 2695
Remarks: NEVER EXCEED; min OAL: 2.903; 39,000 cup

150 Jacketed IMR IMR-3031 37.3 2427
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-3031 42.0 2695
Remarks: NEVER EXCEED; min OAL: 2.903; 39,600 cup

150 Jacketed IMR IMR-4350 47.0 2541
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4350 48.5 2615
Remarks: NEVER EXCEED; min OAL: 2.903; 36,300 cup

150 Jacketed Hodgdon H-4895 37.0 2297
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-4895 42.0 2575
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Accurate AAC-4350 44.1 2258
Remarks: start load; min OAL: 2.948
150 Jacketed Accurate AAC-4350 49.0 2566
Remarks: NEVER EXCEED; min OAL: 2.948; 36,800 cup

150 Jacketed Hodgdon H-414 41.4 2257
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-414 47.0 2531
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Hodgdon H-322 35.2 2245
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-322 40.0 2518
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Hodgdon H-335 32.6 2237
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-335 37.0 2508
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Hodgdon BL-C(2) 32.6 2221
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon BL-C(2) 37.0 2491
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Hodgdon H-380 38.7 2220
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-380 44.0 2489
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed IMR IMR-4895 31.9 2193
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4895 36.0 2435
Remarks: NEVER EXCEED; min OAL: 2.903; 39,700 cup

150 Jacketed IMR IMR-4831 48.5 2430
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4831 48.5 2430
Remarks: NEVER EXCEED; min OAL: 2.903; 29,800 cup

150 Jacketed Hodgdon H-4350 43.1 2130
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-4350 49.0 2388
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed Accurate AAC-3100 45.0 2083
Remarks: start load; min OAL: 2.948
150 Jacketed Accurate AAC-3100 50.0 2367
Remarks: NEVER EXCEED; compressed charge; min OAL: 2.948; 34,700 cup

150 Jacketed Hodgdon H-4198 28.2 2111
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-4198 32.0 2366
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed IMR IMR-4198 27.7 2182
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4198 30.0 2355
Remarks: NEVER EXCEED; min OAL: 2.903; 38,100 cup

150 Jacketed Hodgdon H-4831 43.1 2057
Remarks: start load; min OAL: 2.703
150 Jacketed Hodgdon H-4831 49.0 2306
Remarks: NEVER EXCEED; min OAL: 2.703

150 Jacketed IMR IMR-4227 21.9 1955
Remarks: start load; min OAL: 2.903
150 Jacketed IMR IMR-4227 23.5 2090
Remarks: NEVER EXCEED; min OAL: 2.903; 37,700 cup

150 Jacketed IMR SR-4759 23.1 1964
Remarks: start load; min OAL: 2.903
150 Jacketed IMR SR-4759 24.5 2080
Remarks: NEVER EXCEED; min OAL: 2.903; 37,300 cup

150 Jacketed Accurate AAC-8700 47.7 1615
Remarks: start load; min OAL: 2.948
150 Jacketed Accurate AAC-8700 53.0 1835
Remarks: NEVER EXCEED; min OAL: 2.948; 29,300 cup

 

[Zee705]

I get best accuracy with those bullets using H380 and Varget. Decent accuracy with pulled down chinese surplus 7.62x51 powder (41gr) and bullets, but they hit a couple of inches above POA at 100yds.

The most accurate combo I've found for my MAS is 170gr round nose (30-30 bullet) with 44gr of H380 & CCI 250 primers. It matches the sight's indexing perfectly. A close second is 165gr Hornady Interlocks with 41.5gr Varget.

What weight were the Chinese pulled bullets?

 

[Bowyer]

What weight were the Chinese pulled bullets?

147gr

Mine gets 1 1/2" - 2" groups with Varget and Chinese surplus 127gr 7.62x39 bullets, but hits almost 3 inches high at 100yd.

 

[Zee705]

147gr

Mine gets 1 1/2" - 2" groups with Varget and Chinese surplus 127gr 7.62x39 bullets, but hits almost 3 inches high at 100yd.

Thanks, I think I'll try a 42 gr. to 44 gr. range of that Swedish powder. That should be safe for the rifle based on my chronod loads at 38 gr. I'll post my velocities and group sizes in this thread.

 

[Bowyer]

Zee, It'll be interesting to see what you're able to come up with.

Might want to be careful with that much of a jump using that MG powder. When working up new combinations for my MAS, I've always started with 300 Savage data. My Lyman manual shows that an IMR 4064 'equivalent' might be too hot at 42gr. The hodgdonreloading webpage suggests the same with their 300 Savage data.

 

[Zee705]

Zee, It'll be interesting to see what you're able to come up with.

Might want to be careful with that much of a jump using that MG powder. When working up new combinations for my MAS, I've always started with 300 Savage data. My Lyman manual shows that an IMR 4064 'equivalent' might be too hot at 42gr. The hodgdonreloading webpage suggests the same with their 300 Savage data.

Chrono'd my loads up to 44 gr. No pressure signs and the velocities were about 10% lower than IMR4064.

I went a bit higher to 44.5 gr. and the bolt was just to say starting to get sticky.

This was the best group, which was awful, so I'm gonna call this experiment a bust. Additionally, the rifle shoots about 6" to the right at 100 yards (I was aiming at the bullseye target on the left out of view).

 

[Bowyer]

Well at least you know that powder's good to go. It's too bad you couldn't get better results with those components. Maybe the stock is messing with the barrel?

How does your rifle group with factory ammo?

 

[mbogo3]

Use the same charge and change the bullet.One variable at a time.

 

[Zee705]

Well at least you know that powder's good to go. It's too bad you couldn't get better results with those components. Maybe the stock is messing with the barrel?

How does your rifle group with factory ammo?

Havent been able to find any PPU locally.

I took the whole rifle down and cleaned off all the surface rust with oil and 0000 steel wool. I had to make a special tool to take the nose cap off. I know you're not supposed to remove it since it might throw the rifle off zero but it had to be done.

 

[Zee705]

Here's the French babe in question.



I know the bolt in the front band is wrong. I have a new one coming from Liberty Tree.

 

[diopter]

7.5x54mm
Warning! Notes: Norma 6.5x55 brass and Remington 9 1/2 primers used with all loads. Ambient temperatures ranged from 50 to 75 degrees Fahrenheit. All groups fired with issue sights (Handloader Issue #145 - May, 1990)
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

150 Speer spitzer IMR IMR-3031 45.5 2,671
Remarks: 2 1/2-inch groups

150 Sierra spitzer Accurate AAC-2520 48.0 2,626
Remarks: most accurate load

150 Hornady Spire Pt IMR IMR-4895 46.0 2,628
Remarks: 2 1/2-inch groups

150 Hornady Spire Pt IMR IMR-4350 54.0 2,710
Remarks: compressed load

150 Hornady Spire Pt Winchester W-760 53.0 2,651
Remarks: 2 1/2 inch groups

150 Hornady Spire Pt Accurate AAC-3100 51.5 2,400
Remarks: 2 1/4-inch groups

150 Hornady Spire Pt IMR IMR-4831 54.0 2,405
Remarks: compressed load

180 Speer spitzer IMR IMR-3031 43.5 2,426
Remarks: 3-inch groups

180 Sierra spitzer IMR IMR-4895 43.0 2,370
Remarks: 34 fps extreme spread

180 Speer spitzer Accurate AAC-2520 45.0 2,372
Remarks: 3-inch groups

180 Sierra spitzer Alliant RL-15 45.0 2,365
Remarks: 51 fps extreme spread

180 Sierra spitzer Winchester W-748 46.0 2,490
Remarks: 3-inch groups

180 Sierra spitzer IMR IMR-4831 51.0 2,247
Remarks: compressed load

 

[Zee705]

7.5x54mm
Warning! Notes: Norma 6.5x55 brass and Remington 9 1/2 primers used with all loads. Ambient temperatures ranged from 50 to 75 degrees Fahrenheit. All groups fired with issue sights (Handloader Issue #145 - May, 1990)
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

150 Speer spitzer IMR IMR-3031 45.5 2,671
Remarks: 2 1/2-inch groups

150 Sierra spitzer Accurate AAC-2520 48.0 2,626
Remarks: most accurate load

150 Hornady Spire Pt IMR IMR-4895 46.0 2,628
Remarks: 2 1/2-inch groups

150 Hornady Spire Pt IMR IMR-4350 54.0 2,710
Remarks: compressed load

150 Hornady Spire Pt Winchester W-760 53.0 2,651
Remarks: 2 1/2 inch groups

150 Hornady Spire Pt Accurate AAC-3100 51.5 2,400
Remarks: 2 1/4-inch groups

150 Hornady Spire Pt IMR IMR-4831 54.0 2,405
Remarks: compressed load

180 Speer spitzer IMR IMR-3031 43.5 2,426
Remarks: 3-inch groups

180 Sierra spitzer IMR IMR-4895 43.0 2,370
Remarks: 34 fps extreme spread

180 Speer spitzer Accurate AAC-2520 45.0 2,372
Remarks: 3-inch groups

180 Sierra spitzer Alliant RL-15 45.0 2,365
Remarks: 51 fps extreme spread

180 Sierra spitzer Winchester W-748 46.0 2,490
Remarks: 3-inch groups

180 Sierra spitzer IMR IMR-4831 51.0 2,247
Remarks: compressed load

Thanks, I'll give some of these a try.

 

[diopter]

Might be an idea to try some flat based bullets instead of boat tails, or try .310 inch. Who know how much it has been abused.

 

[Zee705]

Might be an idea to try some flat based bullets instead of boat tails, or try .310 inch. Who know how much it has been abused.

Think I should slug it?

 

[diopter]

If you can. Buy a small batch of 150gr flat base. See if it improves accuracy with the same loads.