CompareComparing...

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

Overview
Testers

Doug Wall
Stephen Archer

Caliber

.177

Model Number

CPD77

Test Date

Dec 12, 2017

Serial Numbers

N/a

Source of Supply

Supplied by Crosman Corporation.

Condition

New

We Like

Clean handling.
Probably deliver the claimed improved accuracy.
Hit hard downrange.

We Don't Like

Expensive.
Too much variability for the price.

HAM Rating
Comparison to Makers Claims
90%
Most Common Head Diameter
40%
Variation in Head Diameter
30%
Most Common Weight
60%
Variation in Weight
60%
Most Common Length
50%
Variation in Length
70%
Dirtiness
100%
Hard Air Magazine Test Conclusions

Crosman Copper Magnum 10.6 Grain pellets do deliver the improved accuracy and cleanliness claimed by the manufacturer, compared to regular Crosman Premier Hollow Points.

Unfortunately these improvements come at a steep price. Sadly, the manufacturing variability gains are not enough to achieve a HAM Award, given the price difference.

But these pellets are worth trying for hunting due to their high Ballistic Coefficient. If your air rifle "likes" them, they could be worth the cost.

60%
HAM Rating
You have rated this
Full Review

VALUE FOR MONEY

Crosman Copper Magnum 10.6 Grain pellets are copper-covered for clean handling.

At a typical online Street Price of $9.95 for a tin of 200, these are expensive pellets at 4.975 cents each. This compares to an average price of 2.7 cents per pellet in .177 caliber in the US market.

Of course, leading online retailers make “buy four tins, get one free” offers that can reduce the price appropriately.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

BUY FROM PYRAMYD AIR
Crosman Premier Copper Magnum .177 Cal, 10.6 Grains, Domed, 200ct
BUY FROM AIRGUN DEPOT
Crosman Copper Magnum Pellets .177 Cal.

 TEST DATA SUMMARY

Price per Pellet4.98 cents
Most Common Weight10.48 Grains
10.52 Grains
Pellets at That Common Weight14%
Variation in Pellet Weight (Smallest to Largest)2.41%
Most Common Head Diameter4.51 mm
Pellet at That Common Head Diameter36%
Variation in Head Diameter (Smallest to Largest)1.12%
Most Common Length6.69 mm
Pellets at That Common Length20%
Variation in Length (Smallest to Largest)1.50%

 

COMPARISON TO MAKERS CLAIMS

The major claim made by the manufacturer for Crosman Copper Magnum 10.6 Grain pellets is 20% better accuracy at 50 Yards range, when compared to the company’s standard lead pellet.

This is prominently indicated on the front of the “blister card” packaging…

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

… with the comparison details on the back.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

Although Hard Air Magazine has not yet tested the “standard” Premier Hollow Point pellet in .177 caliber, we have tested it in .22 cal. Looking at the test data, it’s clear that Crosman Copper Magnum .177 caliber pellets have considerably reduced variability when compared to the .22 caliber Premier Hollow Points.

This improvement in consistency would certainly account for an improvement in downrange accuracy at 50 yards. Assuming, that is, that the .177 Premier Hollow Points have similar manufacturing variability to the .22 caliber pellets we tested.

Crosman also says that this improved accuracy is the result of improved rifling engagement in the barrel when fired. HAM cannot confirm this. However the Crosman Copper Magnum 10.6 Grain pellet recovered from our “soap block” test – below – certainly indicates that the head and skirt of the pellet were clearly well-engaged in the barrel’s rifling.

Crosman further claims the Copper Magnums are cleaner handling than lead pellets. This is also true, as our Dirtiness test proves.

The company claims that there are Crosman Copper Magnum 10.6 Grain pellets in a tin. The tin tested by HAM contained 201 pellets. However one of them was damaged.

The claimed pellet weight is 10.6 Grains, however, the average of the pellets tested by HAM was 10.50 Grains.

 

CONSISTENCY

The Crosman Copper Magnum 10.6 Grain pellets tested by HAM showed relatively poor head diameter consistency. Only 36% of the pellets had the most common head diameter of 4.51 mm. The variability between the smallest and largest head diameters was 1.12%.

These are relatively poor manufacturing consistency figures for any .177 caliber pellet, particularly so at the high price being charged.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

Weight variability of the Crosman Copper Magnum 10.6 Grain pellets tested by HAM was better than average, however. The most common weight for the pellets was 10.48 Grains and 10.52 Grains, with 14% of the tested pellets having these weights.

The average weight of the pellets tested by HAM was 10.50 Grains. As can be seen from the chart below, only one pellet weighed more than 10.60 Grains. There were no pellets weighing exactly 10.60 Grains.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

Twenty percent of the Crosman Copper Magnum 10.6 Grain pellets tested by HAM had the most common length of 6.69 mm. The variability between the shortest and longest pellets tested was 1.5%. Both of these are approximately average figures for manufacturing consistency.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

 

DIRTINESS

There’s no doubt about it. The Crosman Copper Magnum 10.6 Grain pellets tested by HAM were very clean!

As the photograph below shows, there was very little dirt, dust or other material in with the pellets. That’s just 0.61 Grains, according to our incredibly precise, laboratory grade balance.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

 

DOWNRANGE PERFORMANCE

Crosman Copper Magnum 10.6 Grain pellets are well suited for longer range shooting. They shoot effectively “flat” between 10 and 40 Yards at a Zero Range of 35 Yards, as the Chairgun chart below shows.

70% of the original Muzzle Energy was still maintained at 33 Yards and 60% at 48 Yards. This is due to the relatively high Ballistic Coefficient of 0.022 measured in HAM testing.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

 

HUNTING USE

Overall, Crosman Copper Magnum 10.6 Grain pellets are well suited to long range hunting.

As the photograph below shows, they also have excellent penetration. This is the deepest penetration into the soap block yet recorded in HAM testing. It was accompanied by an entry wound of 7 mm diameter.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

A Crosman Copper Magnum 10.6 Grain pellet was measured before and after being fired into the soap block. The fired pellet – shown left below – had expanded from a head diameter of 4.51 mm to 4.57 mm. It also showed significant rifling marks in both the head and the skirt.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

 

BUYING AND OWNING

Crosman Copper Magnum 10.6 Grain pellets are widely available online and in physical stores. They are supplied in a metal snap-top tin with a clear insert.

There’s a disk of foam in the base of the tin that prevented the pellets frommoving around in transit, with the risk of possible damage.

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

 

TEST DATA

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

Crosman Copper Magnum 10.6 Grain .177 Caliber Pellet Test Review

For background details on HAM’s Pellet Test Review methodology, check out this link.

Chairgun is a product of Hawke Sports Optics LLC and is used with permission. Check out http://www.hawkeoptics.com

BUY FROM PYRAMYD AIR
Crosman Premier Copper Magnum .177 Cal, 10.6 Grains, Domed, 200ct
BUY FROM AIRGUN DEPOT
Crosman Copper Magnum Pellets .177 Cal.

Understanding HAM Pellet Awards

HAM Pellet Awards come from the most rigorous, professional and comprehensive pellet testing by any independent publication. They are the result of much precise measurement and analysis using high precision measuring devices and highly-experienced testers.

Note that accuracy is a product of the complete “system” of airgun, scope, atmospheric conditions and shooter ability – not the pellet alone.

This means that no pellet test review can predict the accuracy of a particular pellet with YOUR individual air rifle. That’s why we do not measure accuracy in these pellet tests.

What HAM Pellet Awards do recognize is manufacturing consistency. Inconsistent pellets definitely will be inaccurate, consistent pellets are much more likely to be accurate.

HAM Awards also recognize value. There’s considerable variation in the price of airgun pellets. This means that an 8 cent pellet needs to score higher than a 2 cent pellet to achieve an award.

For full details of the HAM Pellet Award scoring methodology, please check out our Pellet Testing page.

For a full listing of HAM-tested Ballistic Coefficients, please see our Ballistic Coefficients page.

This entire article including scoring, data etc is Copyright Hard Air Magazine and may NOT in part or in whole be reproduced in any electronic or printed medium without prior permission from the publisher.